RTV-G-4 Bumper
The RTV-G-4 Bumper was a sounding rocket built by the United States. A combination of the German V-2 rocket and the WAC Corporal sounding rocket, it was used to study problems pertaining to two-stage high-speed rockets. The Bumper program launched eight rockets between May 13, 1948 and July 29, 1950. The first six flights were conducted at the White Sands Missile Range; the seventh launch, Bumper 8 on July 24, 1950, was the first rocket launched from Cape Canaveral.
Bumper 5, launched February 24, 1949 | |
| Function | Sounding rocket |
|---|---|
| Manufacturer | Army Ballistic Missile Agency |
| Country of origin | Germany/United States |
| Size | |
| Height | 62 feet (19 m) |
| Diameter | 5 feet 5 inches (1.65 m) |
| Launch history | |
| Status | Retired |
| Launch sites | |
| Total launches | 8 |
| First flight | May 13, 1948 |
| Last flight | July 29, 1950 |
| First stage - V-2 rocket | |
| Thrust | 27,200 kgf (267,000 N; 60,000 lbf) |
| Burn time | 60s |
| Propellant |
|
| Second stage Wac Corporal | |
| Thrust | 6.7 kN |
| Burn time | 47s |
| Propellant | Aerojet liquid-fuel |
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