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  • 1. Sinn, T.
    et al.
    McRobb, M.
    Wujek, Adam
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
    Skogby, Jerker
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
    Rogberg, Fredrik
    KTH, Skolan för elektro- och systemteknik (EES).
    Wang, Junyi
    KTH, Skolan för elektro- och systemteknik (EES).
    Vasile, M.
    Tibert, Gunnar
    KTH, Skolan för teknikvetenskap (SCI), Mekanik, Strukturmekanik.
    Results of rexus12's suaineadh experiment: Deployment of a spinning space web in micro gravity conditions2012Inngår i: Proceedings of the International Astronautical Congress, IAC: Volume 2, 2012, International Astronautical Federation, 2012, s. 803-810Konferansepaper (Fagfellevurdert)
    Abstract [en]

    On the 19th of March 2012, the Suaineadh experiment was launched onboard the sounding rocket REXUS12 (Rocket Experiments for University Students) from the Swedish launch base ESRANGE in Kiruna. The Suaineadh experiment served as a technology demonstrator for a space web deployed by a spinning assembly. The deployment of this web is a stepping stone for the development of ever larger structures in space. Such a structure could serve as a substructure for solar arrays, transmitters and/or antennas. The team was comprised of students from the University of Strathclyde (Glasgow, UK), the University of Glasgow (Glasgow, UK) and the Royal Institute of Technology (Stockholm, Sweden), designing, manufacturing and testing the experiment over the past 24 months. Following launch, the experiment was ejected from the ejection barrel located within the nosecone of the rocket. Centrifugal forces acting upon the space webs spinning assembly were used to stabilise the experiment's platform. A specifically designed spinning reaction wheel, with an active control method, was used. Once the experiment's motion was controlled, a 2 m by 2 m space web is released. Four daughter sections situated in the corners of the square web served as masses to stabilise the web due to the centrifugal forces acting on them. The four daughter sections contained inertial measurement units (IMUs). Each IMU provided acceleration and velocity measurements in all three directions. Through this, the positions of the four corners could be found through integration with respect to known time of the accelerations and rotations. Furthermore, four cameras mounted on the central hub section captured high resolution imagery of the deployment process. After the launch of REXUS12, the recovery helicopter was unable to locate the ejected experiment, but 22 pictures were received over the wireless connection between the experiment and the rocket. The last received picture was taken at the commencement of web deployment. Inspection of these pictures allowed the assumption that the experiment was fully functional after ejection, but perhaps through tumbling of either the experiment or the rocket, the wireless connection was interrupted. A recovery mission in the middle of August was only able to find the REXUS12 motor and the payload impact location.

  • 2.
    Sinn, Thomas
    et al.
    University of Strathclyde.
    McRobb, Malcolm
    University of Strathclyde.
    Wujek, Adam
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
    Skogby, Jerker
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
    Rogberg, Fredrik
    KTH, Skolan för elektro- och systemteknik (EES).
    Wang, Junyi
    KTH, Skolan för elektro- och systemteknik (EES).
    Vasile, Massimiliano
    University of Strathclyde.
    Tibert, Gunnar
    KTH, Skolan för teknikvetenskap (SCI), Mekanik, Strukturmekanik.
    Lessons learned from REXUS12'S suaineadh experiment: Spinning deployment of a space Web in milli gravity2013Inngår i: 21st ESA Symposium: European Rocket & Balloon Programmes and Related Research / [ed] L. Ouwehand, ESA Communications , 2013, s. 329-338Konferansepaper (Fagfellevurdert)
    Abstract [en]

    On the 19th of March 2012, the Suaineadh experiment was launched onboard the sounding rocket REXUS 12 (Rocket Experiments for University Students) from the Swedish launch base ESRANGE in Kiruna. The Suaineadh experiment served as a technology demonstrator for a space web deployed by a spinning assembly. Following launch, the experiment was ejected from the ejection barrel located within the nosecone of the rocket. Centrifugal forces acting upon the space web spinning assembly were used to stabilise the experiment's platform. A specifically designed spinning reaction wheel, with an active control method, was used. Once the experiment's motion was controlled, a 2 m by 2 m space web is released. Four daughter sections situated in the corners of the square web served as masses to stabilise the web due to the centrifugal forces acting on them. The four daughter sections contained inertial measurement units (IMUs). After the launch of REXUS 12, the recovery helicopter was unable to locate the ejected experiment, but 22 pictures were received over the wireless connection between the experiment and the rocket. The last received picture was taken at the commencement of web deployment. Inspection of these pictures allowed the assumption that the experiment was fully functional after ejection, but probably through tumbling of either the experiment or the rocket, the wireless connection was interrupted. A recovery mission in the middle of August was only able to find the REXUS 12 motor and the payload impact location.

  • 3. Sinn, Thomas
    et al.
    McRobb, Malcolm
    Wujek, Adam
    KTH, Skolan för informations- och kommunikationsteknik (ICT).
    Skogby, Jerker
    KTH, Skolan för informations- och kommunikationsteknik (ICT).
    Rogberg, Fredrik
    KTH, Skolan för elektro- och systemteknik (EES).
    Wang, Junyi
    KTH, Skolan för elektro- och systemteknik (EES).
    Vasile, Massimiliano
    Tibert, Gunnar
    KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg.
    Mao, Huina
    KTH, Skolan för teknikvetenskap (SCI), Mekanik, Strukturmekanik.
    THE EXPERIMENT THAT CAME FROM THE COLD: RESULTS FROM THE RECOVERED REXUS12 SUAINEADH SPINNING WEB EXPERIMENT2015Inngår i: EUROPEAN ROCKET AND BALLOON: PROGRAMMES AND RELATED RESEARCH, 2015, s. 449-459Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The Suaineadh experiment had the purpose to deploy a 2m x 2m web in milli gravity conditions by using the centrifugal forces acting on corner sections of a web that is spinning around a central hub. Continuous exploration of our solar system and beyond requires ever larger structures in space. But the biggest problem nowadays is the transport of these structures into space due to launch vehicle payload volume constrains. By making the space structures deployable with minimum storage properties, this constrain may be bypassed. Deployable concepts range from inflatables, foldables, electrostatic to spinning web deployment. The advantage of the web deployment is the very low storage volume and the simple deployment mechanism. These webs can act as lightweight platforms for the construction of large structures in space without the huge expense of launching heavy structures from Earth. The Suaineadh experiment was launched onboard the sounding rocket REXUS12 in March 2012. After achieving the required altidue, the Suaineadh experiment was ejected from the rocket in order to be fully free flying. A specially designed spinning wheel in the ejected section was then used to spin up the experiment until the required rate is achieved for web deployment to commence. Unfortunately during re-entry, the probe was lost and also a recovery mission in August 2012 was only able to find minor components of the experiment. After 18 month, in September 2013, the experiment was found in the wilderness of Northern Sweden. In the following months all data from the experiment could be recovered. The images and accelerometer data that has been analysed showed the deployment of the web and a very interesting three dimensional behaviour that differs greatly from on ground two dimensional prototype tests. This paper will give an overview on the recovered data and it will present the analysed results of the Suaineadh spinning web experiment.

  • 4.
    Sinn, Thomas
    et al.
    University of Strathclyde.
    McRobb, Malcolm
    University of Glasgow.
    Wujek, Adam
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
    Skogby, Jerker
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
    Zhang, Mengqi
    KTH, Skolan för teknikvetenskap (SCI), Mekanik.
    Vasile, Massimiliano
    University of Strathclyde.
    Tibert, Gunnar
    KTH, Skolan för teknikvetenskap (SCI), Mekanik, Strukturmekanik.
    Weppler, Johannes
    University of Stuttgart.
    Feeney, Andrew
    University of Glasgow.
    Russell, John
    University of Glasgow.
    Rogberg, Fredrik
    KTH, Skolan för elektro- och systemteknik (EES).
    Wang, Junyi
    KTH, Skolan för elektro- och systemteknik (EES).
    REXUS 12 Suaineadh experiment: deployment of a web in microgravity conditions using centrifugal forces2011Inngår i: IAC 2011: Proceedings of the 62nd International Astronautical Congress, 2011, s. IAC-11-A2.3.7-Konferansepaper (Fagfellevurdert)
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