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David Gschliesser 2.1 1 === Details ===
2
3 |**Acronym**|TUMBLEWEED-JRP
4 |**Description**|Tumbleweed is the concept of a spherical rover to be
5 deployed on Mars.
6 |**Principal Investigator (PI)**|(((
Dominik Rabl 14.1 7 Julian Rothenbuchner | [[julian@teamtumbleweed.eu>>mailto:julian@teamtumbleweed.eu]]
David Gschliesser 2.1 8 )))
9 |**Organisation** |University of Technology, Vienna
10 |**Co-Investigators**|(((
11 Moritz Stephan, Stanford University; Wurlitzergasse 93/23, 1170 Vienna
12 E-mail: [[moritz@teamtumbleweed.eu>>mailto:moritz@teamtumbleweed.eu]]
13
14 Dominik Schmidt, University of Technology Vienna; Hietzinger Hauptstr. 69/3, 1130 Wien, :
15 E-mail: [[dominik@teamtumbleweed.eu>>mailto:dominik@teamtumbleweed.eu]]
16
17 Amelie Finan, University of Vienna; Bernhard Schilcher Straße 18, 2000 Stockerau
18 E-mail: [[amelie@teamtumbleweed.eu>>mailto:amelie@teamtumbleweed.eu]]
19
20 Josef E. Pürmayr, Sir Karl Popper school; Wiedner Gürtel 68, 1040 Vienna;
21 E-mail: [[josef@teamtumbleweed.eu>>mailto:josef@teamtumbleweed.eu]]
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23
24
25 )))
26
27 === Summary ===
28
29 [[image:1628955738683-845.png]]
30
31 Tumbleweed is the concept of a spherical rover to be deployed on Mars. They are designed to be spheres of a
32 diameter of 5 m equator-wards by Martian winds. One Tumbleweed consists of a sturdy aluminum/composite
33 outer frame and sails arranged to provide optimal air resistance. Solar cells on the sails provide power. Sensors
34 and electronics are attached to the outer frame. The first Tumbleweed prototype was already participating in
35 the AMADEE-18 mission. The research questions for the AMADEE-20 experiment can be summarized as:
36
37 1) What is the performance of the solar cells perform under operational conditions? Specifically, what is
38 the effect of the constantly changing illumination angle caused by the rover’s movement
39 and different times of day?
40 2) What is the distribution of abrasion on the Tumbleweed’s structure? Surface abrasion is
41 expected to be one of the main factors limiting the structural lifespan of a Tumbleweed
42 Rover. The aim is to find out more about the rate and distribution of this abrasion. The
43 test shall be conducted in sandy as well as increasingly rocky environment.
44 3) How does the Tumbleweed’s speed and direction of movement vary under different
45 wind conditions?
Daniel Valtiner 2.2 46
47
48 = Experiment Data =
49
Dominik Rabl 3.1 50 |=(% style="width: 156px;" %)Date|=(% style="width: 1683px;" %)Files
Daniel Valtiner 7.2 51 |(% style="width:156px" %)[[2021-10-15>>https://mission.oewf.org/archive_downloads/amadee20/TUMBLEWEED-JRP/2021-10-15/]]|(% style="width:1683px" %)(((
52 pictures of wring issues
Dominik Rabl 5.1 53 )))
Daniel Valtiner 7.2 54 |(% style="width:156px" %)[[2021-10-17>>https://mission.oewf.org/archive_downloads/amadee20/TUMBLEWEED-JRP/2021-10-17]]|(% style="width:1683px" %)repair pics
55 |(% style="width:156px" %)[[2021-10-18>>https://mission.oewf.org/archive_downloads/amadee20/TUMBLEWEED-JRP/2021-10-18/]]|(% style="width:1683px" %)troubleshooting pics
56 |(% style="width:156px" %)[[2021-10-19>>https://mission.oewf.org/archive_downloads/amadee20/TUMBLEWEED-JRP/2021-10-19]]|(% style="width:1683px" %)Pictures and Video
Daniel Valtiner 11.1 57 |(% style="width:156px" %)[[2021-10-20>>https://mission.oewf.org/archive_downloads/amadee20/TUMBLEWEED-JRP/2021-10-20]]|(% style="width:1683px" %)2xVideo, 5 pics, POI.md
Daniel Valtiner 7.2 58 |(% style="width:156px" %)[[2021-10-22>>https://mission.oewf.org/archive_downloads/amadee20/TUMBLEWEED-JRP/2021-10-22/]]|(% style="width:1683px" %)7 pictures
Martin Schlecker 12.1 59 |(% style="width:156px" %)[[2021-10-24>>https://mission.oewf.org/archive_downloads/amadee20/TUMBLEWEED-JRP/2021-10-24]]|(% style="width:1683px" %)2 videos
60 |(% style="width:156px" %)[[2021-10-29>>https://mission.oewf.org/archive_downloads/amadee20/TUMBLEWEED-JRP/2021-10-29]]|(% style="width:1683px" %)1 video
Daniel Valtiner 2.2 61
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