OV1-20P

 1971-067A

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The OV1-20 propulsion module carried some particle experiments and the OAR-901 LOADS II satellite. OV1-20 was launched on STP flight P70-2.

P70-2 carried a complex of experiments. AVL-802 mass was 44 kg per the STP history, of which about 21 kg was the deployed satellites and 23 kg was canister hardware. The unaccounted mass noted below is presumed to be payload attachment hardware that remained with the propulsion modules.

CRLU-928/OAR-901 LOADS-2	364
OV1-20P	125?
OV1-20 Expts	17
OV1-20 propellant	272
Unaccounted	54
OV1-20 Total	832
OAR 907 RTDS	72
LCS-4 canister	30?
RTD 701 LCS-4	37
AVL-802-1 Can	12?
AVL-802-2 Can	12?
AVL-802 Mylar	0.8
AVL-802 Grid 7-1	6.2
AVL-802 Grid 7-2	4.0
AVL-802 Rigid	10?
Star 13A	37
OV1-21 Expts	32
OV1-21P	125?
OV1-21 propellant	272
Unaccounted	202
OV1-21 Total	851
Post burn	579
Post RTDS	505
Post AKM	472

OV1-20P
Date	Time	Event	Orbit
1971 Aug 7	0011	Launch by Atlas F	V
	0016?	Atlas SECO
	0020?	Sep Atlas at 166 km
	0022?	Sep+2 min, FW4S burn
	0022?	Perigee
	0025?	Ejected OAR-901 LOADS II
			106.2 133 x 1957 x 92.0
1971 Aug 29		Reentered

Payload:

• SAMSO-132 Energetic proton analyser, 15 kg

• SSD-975B Particle flux and thermal detector (ne,Te), 2 kg

• OAR-901 Low Altitude Density Satellite II