{"id":71386,"date":"2025-01-31T16:04:28","date_gmt":"2025-01-31T15:04:28","guid":{"rendered":"https:\/\/xometry.pro\/stories\/ltu-fenrir-free-falling-unit\/"},"modified":"2025-03-20T12:32:31","modified_gmt":"2025-03-20T11:32:31","slug":"ltu-fenrir-free-falling-unit","status":"publish","type":"stories","link":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/","title":{"rendered":"How Project FENRIR and Xometry Developed a Modular Free-Fall Experiment Platform for Microgravity Research"},"content":{"rendered":"<div role=\"navigation\" aria-label=\"Table of Contents\" class=\"simpletoc wp-block-simpletoc-toc\"><h2 class=\"simpletoc-title\">Table of Contents<\/h2>\n<ul class=\"simpletoc-list\">\n<li><a href=\"#h-making-space-exploration-more-accessible\">Making Space Exploration More Accessible<\/a>\n\n<\/li>\n<li><a href=\"#atss-stabilising-microgravity-conditions\">ATSS: Stabilising Microgravity Conditions<\/a>\n\n<\/li>\n<li><a href=\"#pcm-investigating-phase-change-materials-in-space\">PCM: Investigating Phase Change Materials in Space<\/a>\n\n<\/li>\n<li><a href=\"#how-xometry-helped-bring-fenrirs-vision-to-life\">How Xometry Helped Bring FENRIR\u2019s Vision to Life<\/a>\n\n<\/li>\n<li><a href=\"#precision-manufacturing-for-aerospace-applications\">Precision Manufacturing for Aerospace Applications<\/a>\n\n<\/li>\n<li><a href=\"#final-countdown-project-fenrirs-next-steps\">Final Countdown: Project FENRIR\u2019s Next Steps<\/a>\n<\/li><\/ul><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Industry: <\/strong>Aerospace<\/li>\n\n\n\n<li><strong>Manufacturing processes used<\/strong>: CNC Machining,&nbsp; 3D Printing (DMLS &#8211; Direct Metal Laser Sintering)<\/li>\n\n\n\n<li><strong>Challenges<\/strong>: Developing highly specialised components for a modular experiment platform under strict quality and timeline constraints<\/li>\n\n\n\n<li><strong>Solutions<\/strong>: By partnering with Xometry, Project FENRIR produced critical FFU components with precision, optimised for vibrational loads and microgravity conditions. The collaboration significantly reduced lead times and enabled early testing and integration.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background\" style=\"background-color:#f5f7f8;color:#f5f7f8\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"h-making-space-exploration-more-accessible\"><strong>Making Space Exploration More Accessible<\/strong><\/h2>\n\n\n<p>Project FENRIR was founded at Lule\u00e5 University of Technology (LTU) in Sweden, as part of the REXUS\/BEXUS program, a joint initiative between the German Aerospace Center (DLR) and the Swedish National Space Agency (SNSA), with support from European Space Agency (ESA). The program provides students across Europe with the opportunity to design, build, and launch experiments on suborbital sounding rockets, enabling hands-on experience in aerospace research.<\/p>\n\n\n\n<p>The project is driven by a diverse group of LTU students, working across five specialised departments: mechanical, electrical, software, science &amp; payload, and management. Since its inception, 25 contributors have been involved, with 16 currently working on-site in Kiruna, Sweden. Their collaborative effort focuses on overcoming complex engineering challenges while ensuring the platform remains reusable for future missions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"1024\" height=\"605\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/projec-fenrir-team-1024x605.jpg\" alt=\"The Project FENRIR team at Lule\u00e5 University of Technology, a diverse group of students working together to develop an innovative free-fall experiment platform for microgravity research.\u00a9\" class=\"wp-image-71144\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/projec-fenrir-team-1024x605.jpg 1024w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/projec-fenrir-team-300x177.jpg 300w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/projec-fenrir-team-768x454.jpg 768w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/projec-fenrir-team.jpg 1300w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/projec-fenrir-team.jpg\" data-fancybox=\"gallery-71386\" data-caption=\"The Project FENRIR team at Lule\u00e5 University of Technology, a diverse group of students working together to develop an innovative free-fall experiment platform for microgravity research.\u00a9\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/projec-fenrir-team.jpg\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">The Project FENRIR team at Lule\u00e5 University of Technology, a diverse group of students working together to develop an innovative free-fall experiment platform for microgravity research.\u00a9<\/figcaption><\/figure>\n\n\n\n<p>The FENRIR team\u2019s mission is to create a cost-effective and adaptable platform for microgravity experiments, building on LTU\u2019s earlier successes. The Free-Falling Unit (FFU) is designed to be ejected from the rocket at its apogee (~80 km), providing approximately 70 seconds of reduced gravity for scientific experiments. This feature allows future researchers to focus solely on their experiments without the need to design an entirely new experimental platform from scratch.<\/p>\n\n\n\n<p>To ensure a successful experiment, the FFU features a controlled parachute deployment system for safe recovery. Its modular structure, combined with an Attitude Stabilisation System (ATSS) and Phase Change Material (PCM) payload, provides an adaptable research platform for future microgravity studies.<\/p>\n\n\n\n<p>FENRIR follows in the footsteps of earlier LTU projects, particularly the ASTER project, which was part of the <a href=\"https:\/\/rexusbexus.net\/\" target=\"_blank\" rel=\"noreferrer noopener\">REXUS\/BEXUS program<\/a>, a European student initiative for suborbital research. ASTER aimed to develop precision attitude control for Free-Falling Units. While ASTER focused on highly controlled attitude stabilisation, FENRIR prioritises modularity, enabling researchers to integrate and adapt different scientific payloads without redesigning the entire platform.<\/p>\n\n\n    <section class=\"article-slider-block\">\r\n        <div class=\"article-content-wrapper\">\r\n            <!-- Swiper -->\r\n            <div class=\"swiper mySwiper2 article-slider-display\">\r\n                <div class=\"swiper-wrapper\">\r\n                                                <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit.png\" alt=\"The FENRIR team working on the Free-Falling Unit (FFU), performing electronic diagnostics and system integration. The unit\u2019s CNC-machined aluminum structure and internal electronics are being tested to ensure optimal performance before launch.\u00a9\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit.png\" data-fancybox=\"gallery\" data-caption=\"The FENRIR team working on the Free-Falling Unit (FFU), performing electronic diagnostics and system integration. The unit\u2019s CNC-machined aluminum structure and internal electronics are being tested to ensure optimal performance before launch.\u00a9\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"The FENRIR team working on the Free-Falling Unit (FFU), performing electronic diagnostics and system integration. The unit\u2019s CNC-machined aluminum structure and internal electronics are being tested to ensure optimal performance before launch.\u00a9\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>The FENRIR team working on the Free-Falling Unit (FFU), performing electronic diagnostics and system integration. The unit\u2019s CNC-machined aluminum structure and internal electronics are being tested to ensure optimal performance before launch.\u00a9<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-module.png\" alt=\"The Free-Falling Unit (FFU) housed within its cylindrical module, featuring CNC-machined aluminium components that provide structural integrity and precision for deployment from the REXUS 34 rocket.\u00a9\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-module.png\" data-fancybox=\"gallery\" data-caption=\"The Free-Falling Unit (FFU) housed within its cylindrical module, featuring CNC-machined aluminium components that provide structural integrity and precision for deployment from the REXUS 34 rocket.\u00a9\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-module.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"The Free-Falling Unit (FFU) housed within its cylindrical module, featuring CNC-machined aluminium components that provide structural integrity and precision for deployment from the REXUS 34 rocket.\u00a9\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>The Free-Falling Unit (FFU) housed within its cylindrical module, featuring CNC-machined aluminium components that provide structural integrity and precision for deployment from the REXUS 34 rocket.\u00a9<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                            <\/div>\r\n            <\/div>\r\n            <div thumbsSlider=\"\" class=\"swiper mySwiper article-slider-list\">\r\n                <div class=\"swiper-wrapper\">\r\n                                            <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit.png\" alt=\"The FENRIR team working on the Free-Falling Unit (FFU), performing electronic diagnostics and system integration. The unit\u2019s CNC-machined aluminum structure and internal electronics are being tested to ensure optimal performance before launch.\u00a9\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-module.png\" alt=\"The Free-Falling Unit (FFU) housed within its cylindrical module, featuring CNC-machined aluminium components that provide structural integrity and precision for deployment from the REXUS 34 rocket.\u00a9\">\r\n                        <\/div>\r\n                                        <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/section>\r\n    \n\n<h2 class=\"wp-block-heading\" id=\"atss-stabilising-microgravity-conditions\"><strong>ATSS: Stabilising Microgravity Conditions<\/strong><\/h2>\n\n\n<p>One of FENRIR\u2019s key innovations is the Attitude Stabilisation System (ATSS), designed to minimise angular velocity during descent, ensuring a stable microgravity environment for experiments. The ATSS features three reaction wheels mounted perpendicular to each other, which store and redistribute angular momentum, effectively slowing the FFU\u2019s rotation.<\/p>\n\n\n\n<p>By reducing the rotational motion of the FFU, the ATSS improves experimental conditions, making it possible to conduct more precise microgravity studies. Unlike previous systems that required complex attitude control, FENRIR\u2019s approach ensures stability while maintaining an adaptable design that can be used for future research.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"pcm-investigating-phase-change-materials-in-space\"><strong>PCM: Investigating Phase Change Materials in Space<\/strong><\/h2>\n\n\n<p>The FFU also houses a Phase Change Material (PCM) payload, designed to investigate how materials transition between solid and liquid states in microgravity. PCM technology is widely used in thermal control systems for spacecraft due to its ability to store and release heat, but its behavior in microgravity remains poorly understood.<\/p>\n\n\n\n<p>To address this knowledge gap, the FENRIR team developed a dedicated PCM experiment module, consisting of:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A transparent observation window, allowing onboard cameras to record the phase transition process.<\/li>\n\n\n\n<li>A copper roof and a heating pad, which induce phase transitions in a controlled manner.<\/li>\n\n\n\n<li>Four internal temperature sensors, tracking heat distribution and phase change behavior in real time.<\/li>\n<\/ul>\n\n\n\n<p>The PCM experiment, combined with the ATSS stabilisation system, will provide valuable insights into heat regulation in space environments, contributing to future advancements in spacecraft thermal control and microgravity research.<\/p>\n\n\n\n<p>By integrating the ATSS and PCM payloads, FENRIR provides a versatile platform for future microgravity studies. Its modular architecture supports ongoing advancements in space research, allowing scientists to conduct experiments without needing to design entirely new systems.<\/p>\n\n\n    <section class=\"article-slider-block\">\r\n        <div class=\"article-content-wrapper\">\r\n            <!-- Swiper -->\r\n            <div class=\"swiper mySwiper2 article-slider-display\">\r\n                <div class=\"swiper-wrapper\">\r\n                                                <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/cnc-machined-plate-2.png\" alt=\"\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/cnc-machined-plate-2.png\" data-fancybox=\"gallery\" data-caption=\"Precision-manufactured components supplied by Xometry, including CNC-machined aluminium plates and custom-designed motor housings, essential for the structural integrity and performance of Project FENRIR\u2019s Free-Falling Unit (FFU).\u00a9\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/cnc-machined-plate-2.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                    <p>Precision-manufactured components supplied by Xometry, including CNC-machined aluminium plates and custom-designed motor housings, essential for the structural integrity and performance of Project FENRIR\u2019s Free-Falling Unit (FFU).\u00a9<\/p>\n                                <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/cnc-machined-plate.png\" alt=\"\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/cnc-machined-plate.png\" data-fancybox=\"gallery\" data-caption=\"\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/cnc-machined-plate.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                                                    <\/div>\r\n                            <\/div>\r\n                            \r\n                                                        <div class=\"swiper-slide\">\r\n                                <div class=\"wp-block-image__wrap\">\r\n                                    <img decoding=\"async\"  src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/rotor-wheel.png\" alt=\"\"\r\n                                    >\r\n                                    <a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/rotor-wheel.png\" data-fancybox=\"gallery\" data-caption=\"\" aria-label=\"Open full image\">\r\n                                        <img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/rotor-wheel.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\">\r\n                                        <svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n                                            <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"><\/path>\r\n                                        <\/svg>\r\n                                    <\/a>\r\n                                <\/div>\r\n                                <div class=\"article-slider-text\">\r\n                                                                    <\/div>\r\n                            <\/div>\r\n                            \r\n                                            <\/div>\r\n            <\/div>\r\n            <div thumbsSlider=\"\" class=\"swiper mySwiper article-slider-list\">\r\n                <div class=\"swiper-wrapper\">\r\n                                            <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/cnc-machined-plate-2.png\" alt=\"\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/cnc-machined-plate.png\" alt=\"\">\r\n                        <\/div>\r\n                                                <div class=\"swiper-slide\">\r\n                            <img decoding=\"async\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/rotor-wheel.png\" alt=\"\">\r\n                        <\/div>\r\n                                        <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/section>\r\n    \n\n<h2 class=\"wp-block-heading\" id=\"how-xometry-helped-bring-fenrirs-vision-to-life\"><strong>How Xometry Helped Bring FENRIR\u2019s Vision to Life<\/strong><\/h2>\n\n\n<p>Manufacturing space-ready components requires extreme precision, strict material tolerances, and rapid iteration\u2014challenges the FENRIR team tackled by partnering with Xometry. Through CNC machining and advanced 3D printing, Xometry provided critical FFU components that met aerospace standards while significantly reducing lead times.<\/p>\n\n\n\n<p>\u201c<em>The support we\u2019ve received from our partners has been crucial in addressing the challenges of creating such a complex platform<\/em>,\u201d says Eric Almqvist, Mechanical Department Lead at Project FENRIR. The Instant Quoting Engine also provided real-time feedback, enabling the team to optimise designs for manufacturability.<\/p>\n\n\n\n<p>The FENRIR team carefully selected component materials based on a tradeoff between strength and weight. The parts needed to withstand vibrational loads during the mission while keeping the experiment mass to a minimum. Additionally, the team required electromagnetic isolation for the PCBs, ensuring radiosilence to prevent interference with onboard electronics.<\/p>\n\n\n\n<p>The FENRIR team initially prototyped the parts in-house, iterating on their designs to meet the project\u2019s unique requirements. Xometry\u2019s engineers then helped refine these designs, ensuring manufacturability and improving efficiency for production. The parts manufactured by Xometry are the actual components that will fly on the REXUS 34 sounding rocket, meeting the strict standards required for aerospace applications.<\/p>\n\n\n\n<p>Xometry manufactured several key components for the Attitude Stabilisation System (ATSS) and other systems, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>CNC-machined aluminum wall plates <\/strong>that form the structural cube of the FFU and include an electromagnetically isolating PCB case to shield electronics from interference.<\/li>\n\n\n\n<li><strong>A CNC-machined stainless steel retention bracket,<\/strong> capable of securing a 3 kg payload at 4 Hz rotation, ensuring stability during the FFU\u2019s operation.<\/li>\n\n\n\n<li><strong>A CNC-machined rotor wheel, <\/strong>vital for the reaction wheel system within the ATSS.<\/li>\n\n\n\n<li><strong>A DMLS 3D-printed motor mount, <\/strong>optimised for high strength-to-weight performance in microgravity.<\/li>\n<\/ul>\n\n\n\n<p>The combination of CNC machining and advanced 3D printing allowed the FENRIR team to source components tailored to their specific needs, ensuring both manufacturability and performance. By utilising Xometry\u2019s services, they successfully addressed their design challenges while staying on schedule.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"precision-manufacturing-for-aerospace-applications\"><strong>Precision Manufacturing for Aerospace Applications<\/strong><\/h2>\n\n\n<p>The FENRIR team relied on Xometry\u2019s Instant Quoting Engine to simplify the design process. By receiving real-time feedback and cost estimates, they were able to optimise their designs for manufacturability while staying within budget.<\/p>\n\n\n\n<p>\u201c<em>The Instant Quoting Engine helped us compare manufacturing processes quickly and made it easier to finalise our designs<\/em>,\u201d said Almqvist, \u201c<em>For simpler parts, the instant quoting engine saved us a lot of time, while more complex components benefited from Xometry\u2019s engineering reviews.<\/em>\u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"491\" height=\"649\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/integration-reation-wheel-system.png\" alt=\"ntegration of the reaction wheel system onto CNC-machined aluminium plates, manufactured with precision for optimal performance in microgravity conditions.\u00a9\" class=\"wp-image-71216\" style=\"max-width:497px;height:auto\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/integration-reation-wheel-system.png 491w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/integration-reation-wheel-system-227x300.png 227w\" sizes=\"(max-width: 491px) 100vw, 491px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/integration-reation-wheel-system.png\" data-fancybox=\"gallery-71386\" data-caption=\"Integration of the reaction wheel system onto CNC-machined aluminium plates, manufactured with precision for optimal performance in microgravity conditions.\u00a9\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/integration-reation-wheel-system.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">Integration of the reaction wheel system onto CNC-machined aluminium plates, manufactured with precision for optimal performance in microgravity conditions.\u00a9<\/figcaption><\/figure>\n\n\n\n<p>The components supplied by Xometry integrated seamlessly into the final assemblies, meeting the rigorous standards required for aerospace applications. This precision significantly accelerated the team\u2019s timeline, allowing them to begin testing and integration earlier than planned.<\/p>\n\n\n\n<p>\u201c<em>We were impressed with how smoothly the process went, from quoting to delivery<\/em>,\u201d Almqvist shared. \u201c<em>Xometry\u2019s ability to deliver high-quality parts on time was essential to our success.\u201d<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class=\"wp-block-image__wrap\"><img decoding=\"async\" width=\"815\" height=\"1024\" src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-assembly-815x1024.png\" alt=\"The Free-Falling Unit (FFU) in assembly, showcasing CNC-machined components and 3D-printed motor mounts supplied by Xometry, integrated with the electronics and reaction wheel system.\u00a9\" class=\"wp-image-71228\" style=\"max-width:600px;height:auto\" srcset=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-assembly-815x1024.png 815w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-assembly-239x300.png 239w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-assembly-768x965.png 768w, https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-assembly.png 1159w\" sizes=\"(max-width: 815px) 100vw, 815px\" \/><a class=\"wp-block-image__fancy-box-button\" href=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-assembly.png\" data-fancybox=\"gallery-71386\" data-caption=\"The Free-Falling Unit (FFU) in assembly, showcasing CNC-machined components and 3D-printed motor mounts supplied by Xometry, integrated with the electronics and reaction wheel system.\u00a9\" aria-label=\"Open full image\"><img src=\"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-in-assembly.png\" class=\"wp-block-image__fancy-box-button-thumbnail wp-post-image\" alt=\"\" loading=\"lazy\" decoding=\"async\"><svg class=\"wp-block-image__fancy-box-button-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" aria-hidden=\"true\">\r\n               <path d=\"M0 2V6H2V2H6V0H2C0.895 0 0 0.895 0 2ZM2 12H0V16C0 17.105 0.895 18 2 18H6V16H2V12ZM16 16H12V18H16C17.105 18 18 17.105 18 16V12H16V16ZM16 0H12V2H16V6H18V2C18 0.895 17.105 0 16 0Z\" fill=\"#092C47\"\/>\r\n             <\/svg><\/a><\/div><figcaption class=\"wp-element-caption\">The Free-Falling Unit (FFU) in assembly, showcasing CNC-machined components and 3D-printed motor mounts supplied by Xometry, integrated with the electronics and reaction wheel system.\u00a9<\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"final-countdown-project-fenrirs-next-steps\"><strong>Final Countdown: Project FENRIR\u2019s Next Steps<\/strong><\/h2>\n\n\n<p>With the launch of REXUS 34 scheduled for March 2025, the FENRIR team is conducting final preparations and ensuring their platform is mission-ready. Post-launch, they plan to analyse their experimental results and publish their findings, contributing valuable insights to the fields of microgravity research and space technology.<\/p>\n\n\n\n<p>Although Project FENRIR is nearing its conclusion, the team remains committed to recommending Xometry to future LTU projects. <em>\u201cXometry\u2019s support has been invaluable, and we\u2019re confident that other teams at LTU will benefit from their services in the future,<\/em>\u201d Almqvist concludes.<\/p>\n\n\n\n<p><strong>About Project FENRIR: <\/strong>Project FENRIR is a student-led initiative at Lule\u00e5 University of Technology (LTU) dedicated to advancing space research through innovative microgravity experiments. As part of the prestigious REXUS\/BEXUS program, supported by the German Aerospace Center (DLR) and the Swedish National Space Agency (SNSA), the team designs and develops modular Free-Falling Units (FFUs) to facilitate accessible and cost-effective reduced gravity research. By collaborating with industry partners like Xometry, Project FENRIR combines precision manufacturing with cutting-edge engineering to push the boundaries of space exploration.<\/p>\n\n\n\n<p><strong>Website: <\/strong><a href=\"https:\/\/project-fenrir.netlify.app\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/project-fenrir.netlify.app\/<\/a><\/p>\n\n\n\n<p><strong>Contact: <\/strong><a href=\"mailto:fe********@***il.com\" data-original-string=\"gU9AhnGKdukQHVsSDL9TNA==022cNaRiYkLogzBqZDxAzD8kVodR+uRXXH3bRruZN69xo8=\" title=\"This contact has been encoded by Anti-Spam by CleanTalk. Click to decode. To finish the decoding make sure that JavaScript is enabled in your browser.\" target=\"_blank\" rel=\"noreferrer noopener\"><span \n                data-original-string='QZYoRL4mvXWBbhM+dJjUPg==022pdc74Ph8Yv91ibj\/GMuRYJ2+WTr9K37eChDkkg\/QwOw='\n                class='apbct-email-encoder'\n                title='This contact has been encoded by Anti-Spam by CleanTalk. Click to decode. To finish the decoding make sure that JavaScript is enabled in your browser.'>fe<span class=\"apbct-blur\">********<\/span>@<span class=\"apbct-blur\">***<\/span>il.com<\/span><\/a>&nbsp;<\/p>\n\n\n\n<p><\/p>\n","protected":false},"author":50,"featured_media":71243,"comment_status":"open","ping_status":"closed","template":"","c-tag-stories":[2097],"global-tag":[729,495],"class_list":["post-71386","stories","type-stories","status-publish","has-post-thumbnail","hentry","c-tag-stories-aerospace-en-tr","global-tag-cnc-machining-tr","global-tag-3d-printing-tr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>How Project FENRIR Innovates in Microgravity Research | Xometry Pro<\/title>\n<meta name=\"description\" content=\"Project FENRIR is developing innovative solutions for conducting reduced gravity experiments with sounding rockets.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Project FENRIR Innovates in Microgravity Research | Xometry Pro\" \/>\n<meta property=\"og:description\" content=\"Project FENRIR is developing innovative solutions for conducting reduced gravity experiments with sounding rockets.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/\" \/>\n<meta property=\"og:site_name\" content=\"Xometry Pro\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-20T11:32:31+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"14 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/stories\\\/ltu-fenrir-free-falling-unit\\\/\",\"url\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/stories\\\/ltu-fenrir-free-falling-unit\\\/\",\"name\":\"How Project FENRIR Innovates in Microgravity Research | Xometry Pro\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/stories\\\/ltu-fenrir-free-falling-unit\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/stories\\\/ltu-fenrir-free-falling-unit\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/xometry.pro\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/free-falling-unit-scaled.jpg\",\"datePublished\":\"2025-01-31T15:04:28+00:00\",\"dateModified\":\"2025-03-20T11:32:31+00:00\",\"description\":\"Project FENRIR is developing innovative solutions for conducting reduced gravity experiments with sounding rockets.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/stories\\\/ltu-fenrir-free-falling-unit\\\/#breadcrumb\"},\"inLanguage\":\"en-TR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/stories\\\/ltu-fenrir-free-falling-unit\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-TR\",\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/stories\\\/ltu-fenrir-free-falling-unit\\\/#primaryimage\",\"url\":\"https:\\\/\\\/xometry.pro\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/free-falling-unit-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/xometry.pro\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/free-falling-unit-scaled.jpg\",\"width\":2560,\"height\":2199,\"caption\":\"The Free-Falling Unit (FFU)\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/stories\\\/ltu-fenrir-free-falling-unit\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Stories & Case Studies\",\"item\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/stories\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"How Project FENRIR and Xometry Developed a Modular Free-Fall Experiment Platform for Microgravity Research\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/#website\",\"url\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/\",\"name\":\"Xometry Pro\",\"description\":\"Knowledge &amp; Community For Engineers &amp; Product Designers\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/xometry.pro\\\/en-tr\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-TR\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"How Project FENRIR Innovates in Microgravity Research | Xometry Pro","description":"Project FENRIR is developing innovative solutions for conducting reduced gravity experiments with sounding rockets.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/","og_locale":"en_US","og_type":"article","og_title":"How Project FENRIR Innovates in Microgravity Research | Xometry Pro","og_description":"Project FENRIR is developing innovative solutions for conducting reduced gravity experiments with sounding rockets.","og_url":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/","og_site_name":"Xometry Pro","article_modified_time":"2025-03-20T11:32:31+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"14 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/","url":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/","name":"How Project FENRIR Innovates in Microgravity Research | Xometry Pro","isPartOf":{"@id":"https:\/\/xometry.pro\/en-tr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/#primaryimage"},"image":{"@id":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/#primaryimage"},"thumbnailUrl":"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-scaled.jpg","datePublished":"2025-01-31T15:04:28+00:00","dateModified":"2025-03-20T11:32:31+00:00","description":"Project FENRIR is developing innovative solutions for conducting reduced gravity experiments with sounding rockets.","breadcrumb":{"@id":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/#breadcrumb"},"inLanguage":"en-TR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/"]}]},{"@type":"ImageObject","inLanguage":"en-TR","@id":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/#primaryimage","url":"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-scaled.jpg","contentUrl":"https:\/\/xometry.pro\/wp-content\/uploads\/2025\/01\/free-falling-unit-scaled.jpg","width":2560,"height":2199,"caption":"The Free-Falling Unit (FFU)"},{"@type":"BreadcrumbList","@id":"https:\/\/xometry.pro\/en-tr\/stories\/ltu-fenrir-free-falling-unit\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/xometry.pro\/en-tr\/"},{"@type":"ListItem","position":2,"name":"Stories & Case Studies","item":"https:\/\/xometry.pro\/en-tr\/stories\/"},{"@type":"ListItem","position":3,"name":"How Project FENRIR and Xometry Developed a Modular Free-Fall Experiment Platform for Microgravity Research"}]},{"@type":"WebSite","@id":"https:\/\/xometry.pro\/en-tr\/#website","url":"https:\/\/xometry.pro\/en-tr\/","name":"Xometry Pro","description":"Knowledge &amp; Community For Engineers &amp; Product Designers","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/xometry.pro\/en-tr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-TR"}]}},"_links":{"self":[{"href":"https:\/\/xometry.pro\/en-tr\/wp-json\/wp\/v2\/stories\/71386","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xometry.pro\/en-tr\/wp-json\/wp\/v2\/stories"}],"about":[{"href":"https:\/\/xometry.pro\/en-tr\/wp-json\/wp\/v2\/types\/stories"}],"author":[{"embeddable":true,"href":"https:\/\/xometry.pro\/en-tr\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"https:\/\/xometry.pro\/en-tr\/wp-json\/wp\/v2\/comments?post=71386"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xometry.pro\/en-tr\/wp-json\/wp\/v2\/media\/71243"}],"wp:attachment":[{"href":"https:\/\/xometry.pro\/en-tr\/wp-json\/wp\/v2\/media?parent=71386"}],"wp:term":[{"taxonomy":"c-tag-stories","embeddable":true,"href":"https:\/\/xometry.pro\/en-tr\/wp-json\/wp\/v2\/c-tag-stories?post=71386"},{"taxonomy":"global-tag","embeddable":true,"href":"https:\/\/xometry.pro\/en-tr\/wp-json\/wp\/v2\/global-tag?post=71386"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}