FUNcube-1 spin period update

28 Sep 2018 = 21.3 seconds (from averaged panel temperatures) data courtesy VK3HBF
29 Sep 2018 = 20.1 seconds (from averaged panel temperatures) data courtesy VK3HBF
30 Sep 2018 = 18.9 seconds (from averaged panel temperatures)
1 Oct 2018 = 18.2 seconds (from averaged panel temperatures)
2 Oct 2018 = 17.2 seconds (from averaged panel temperatures)
3 Oct 2018 = 16.6 seconds (from averaged panel temperatures) *
4 Oct 2018 = 16.2 seconds (from averaged panel temperatures)
* Just faster than our previous highest spin rate.

73 de Terry VK5GU

FUNcube-1 Spin Period Update


Spin Period
14 Sep 2018 = 22.5 seconds (from averaged panel temperatures)
15 Sep 2018 = 22.3 seconds (from averaged panel temperatures)
16 Sep 2018 = 22.5 seconds (from averaged panel temperatures)
17 Sep 2018 = 25.5 seconds (from averaged panel temperatures)
18 Sep 2018 = 25.0 seconds (from averaged panel temperatures)
19 Sep 2018 = 26.3 seconds (from averaged panel temperatures)
20 Sep 2018 = 28.2 seconds (from averaged panel temperatures)
Some ups and downs this week but overall still slowing down.

73 de Terry VK5GU.

FUNcube-1 spin period update

17 Aug 2018 = 41.4 seconds (from averaged panel temperatures)
18 Aug 2018 = 39.9 seconds (from averaged panel temperatures)
19 Aug 2018 = 39.0 seconds (from averaged panel temperatures) – VK3HBF
20 Aug 2018 = 37.8 seconds (from averaged panel temperatures)
21 Aug 2018 = 36.7 seconds (from averaged panel temperatures)
22 Aug 2018 = 35.3 seconds (from averaged panel temperatures)
23 Aug 2018 = 34.3 seconds (from averaged panel temperatures)
Thanks again to Colin VK3HBF for backup data on the 19th.

73 de Terry VK5GU

FUNcube-1 updated spin graph

Spin Period
10 Aug 2018 = 49.8 seconds (from averaged panel temperatures)
11 Aug 2018 = 48.6 seconds (from averaged panel temperatures)
12 Aug 2018 = 46.6 seconds (from averaged panel temperatures) – VK3HBF
13 Aug 2018 = 45.5 seconds (from averaged panel temperatures)
14 Aug 2018 = 44.0 seconds (from averaged panel temperatures)
15 Aug 2018 = 43.4 seconds (from averaged panel temperatures)
16 Aug 2018 = 42.1 seconds (from averaged panel temperatures)

Thanks to Colin VK3HBF for backup data on Sunday. Funcube-1 continues to steadily speed up.
73 de Terry VK5GU.

FC1 – spin period update

3 Aug 2018 = 57.5 seconds (from averaged panel temperatures)
4 Aug 2018 = 55.8 seconds (from averaged panel temperatures)
5 Aug 2018 = 54.2 seconds (from averaged panel temperatures)
6 Aug 2018 = 54.2 seconds (from averaged panel temperatures)
7 Aug 2018 = 51.4 seconds (from averaged panel temperatures)
8 Aug 2018 = 51.5 seconds (from averaged panel temperatures)
9 Aug 2018 = 50.6 seconds (from averaged panel temperatures)

Thanks to Colin VK3HBF for backup data when I wasn’t available.
73 de Terry VK5GU

AO-73 August 2nd Update

Greetings to the Group,

Spin Period

27 July 2018 = 63.8 seconds (from averaged panel temperatures)
28 July 2018 = 62.8 seconds (from averaged panel temperatures)
29 July 2018 = 61.0 seconds (from averaged panel temperatures)
30 July 2018 = 60.1 seconds (from averaged panel temperatures)
31 July 2018 = 59.9 seconds (from averaged panel temperatures)
01 Aug 2018 = 58.8 seconds (from averaged panel temperatures)
02 Aug 2018 = 58.5 seconds (from averaged panel temperatures)

Currently there appear to be two “inertial forces” influencing the spin period.
1. The magnetic forces produced by the PA current when the transponder is ON at the weekend, reacting with the earth’s magnetic field.
2. The Propeller Effect as the eclipse periods shorten, now at 20 minutes per orbit.
AO-73 will be in full sunlight on or around 8th September.

73
de Colin VK5HI.

AO-73 26th July

Greetings to the Group,

Spin Period

20 July 2018 = 68.9 seconds (from averaged panel temperatures)
21 July 2018 = 67.4 seconds (from averaged panel temperatures)
22 July 2018 = 66.0 seconds (from averaged panel temperatures)
23 July 2018 = 65.6 seconds (from averaged panel temperatures)
24 July 2018 = 65.5 seconds (from averaged panel temperatures)
25 July 2018 = 65.4 seconds (from averaged panel temperatures)
26 July 2018 = 64.3 seconds (from averaged panel temperatures)

AO-73 is showing a tendency to very slowly increase in speed of rotation.

73
de Colin VK5HI.