Phase 3D

Germany

Spacecraft n°:

Germany spacecraft n°: 36

Also called Amsat Oscar 40, AO-40

Launch data:

Designation26611 / 00072D
Launch date 16 Nov 2000
Launch site Ko, ELA-3
Launch vehicle Ariane-5 (V135)
MissionTelecommunications
Earth orbit:
Perigee/Apogee 355 / 58974 km
Inclination 6.2°
Period  

Several problems occured right after launch, noticeably with the 70 cm transmitter, the IHU-2 and the 400-newton motor (helium valve stuck). On 13 Dec 2000, the satellite went silent. It came back up on 25 Dec 2000 after a hard reset sent in L-band. The computer crash may be caused by hard radiation that the satellit encounters in transfert orbit.

A leak is suspected to explain to higher than normal spin rate.

Specifications

Prime contractor AMSAT-DL
Platform  
Mass at launch 646 kg (including 250 kg fuel)
Mass in orbit  
Dry mass 397 kg
Dimension 1120 x 675 cm
Solar array  
Stabilization 3-axis
DC power ~ 600 W
Design lifetime  

Orbit control with GPS (12 antennas); capable of computing it's own Kepler elements. Has its own apogee motor (MBB S400). Has cameras to picture Earth.

Uplink frequency chart (MHz)


Uplink Digital Analog Passband Center
15 m none 21.210 - 21.250 21.230
2 m 145.800 - 145.840 145.840 - 145.990 145.915
70 cm 435.300 - 435.550 435.550 - 435.800 435.675
23 cm (1) 1269.000 - 1269.250 1269.250 - 1269.500 1269.375
23 cm (2) 1268.075 - 1268.350 1268.325 - 1268.575 1268.450
13 cm (1) 2400.100 - 2400.350 2400.350 - 2400.600 2400.475
13 cm (2) 2449.200 - 2446.450 2446.450 - 2446.700 2446.575
6 cm 5668.300 - 5668.550 5668.550 - 5668.800 5668.675

Downlink frequency chart (MHz)


Downlink Digital Analog Passband Center
10 m 29.330    
2 m 145.955-145.990 145.805-145.955 145.880
70 cm 435.900-436.200 435.475-435.725 435.600
13 cm 2400.650-2400.950 2400.225-2400.475 2400.350
3 cm 10451.450-10451.750 10451.025-10451.275 10451.150
1.5 cm 24048.450-24048.750 24048.025-24048.275 24048.150

Beacons (MHz)


  Beacon 1 Beacon 2
2 m none none
70 cm 435.450 435.850
13 cm 2400.200 2400.600
3 cm 10451.000 10451.400
1.5 cm 24048.000 24048.400

Other: 146.898 MHz (400 bps telemetry)

Also carries a Laser IR experiment (835 nm, 0.5 W)
Ref: #15 - update: 17.08.08