Specifications (Juno II Launch Vehicle)
The Juno II was a four-stage rocket derived from the Jupiter IRBM. It was used for 10 satellite launches, six of those failed. It launched Pioneer 3, Pioneer 4, Explorer 7, Explorer 8, and Explorer 11.
- Juno II total length: 24.0 m
- Orbit payload to 200 km: 41 kg
- Escape velocity payload: 6 kg
- First launch date: December 6, 1958
- Last launch date: May 24, 1961
| Parameter | 1st stage | 2nd stage | 3rd stage | 4th stage |
|---|---|---|---|---|
| Gross mass | 54,431 kg | 462 kg | 126 kg | 42 kg |
| Empty mass | 5,443 kg | 231 kg | 63 kg | 21 kg |
| Thrust | 667 kN | 73 kN | 20 kN | 7 kN |
| Isp | 248 s (2.43 kN·s/kg) |
214 s (2.10 kN·s/kg) |
214 s (2.10 kN·s/kg) |
214 s (2.10 kN·s/kg) |
| Burn time | 182 s | 6 s | 6 s | 6 s |
| Length | 18.28 m | 1.0 m | 1.0 m | 1.0 m |
| Diameter | 2.67 m | 1.0 m | 0.50 m | 0.30 m |
| Engine: | Rocketdyne S-3D | Eleven Sergents | Three Sergents | One Sergent |
| Propellant | LOX/RP-1 | Solid Fuel | Solid Fuel | Solid fuel |
Read more about this topic: PGM-19 Jupiter
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