Saturn INT-21

From Wikipedia, the free encyclopedia

Saturn INT-21
A Saturn INT-21 launches the Skylab space station, on May 14, 1973
A Saturn INT-21 launches the Skylab space station, on May 14, 1973
Fact sheet
Function Space Station launch vehicle
Manufacturer Boeing (S-IC)
North American (S-II)
Country of origin USA
Size
Height 80 m (262 ft)
Diameter 10 m (33 ft)
Mass 2,916,000 kg (6,429,000 lb)
Stages 2
Capacity
Payload to LEO 75,000 kg
Launch History
Status Retired
Launch Sites LC-39A, Kennedy Space Center
Total launches 1
Successes 1
Maiden flight May 14, 1973
Last flight May 14, 1973
Notable payloads Skylab
First Stage - S-IC
Engines 5 Rocketdyne F-1
Thrust 34.02 MN (7,648,000 lbf)
Burn time 150 seconds
Fuel RP-1/LOX
Second Stage - S-II
Engines 5 Rocketdyne J-2
Thrust 5 MN (1,000,000 lbf)
Burn time 360 seconds
Fuel LH2/LOX

The Saturn INT-21 was an American orbital launch vehicle of the 1970s. It was derived from the Saturn V rocket, used for the Apollo program, and is commonly mistaken for the Saturn V. It was only launched once, from Kennedy Space Center at Cape Canaveral, carrying the Skylab space station into orbit, at 17:50 GMT, on May 14, 1973. It was intended to be used for other flights in the Apollo Applications Program, and would have also been used to launch other American space stations, including Skylab-B, the S-IVB Dry Workshop, and the S-II Wet Workshop.

The INT-21 and Saturn V have common first and second stages, but they differ in that the INT-21 lacked a third stage. It was also intended to have the instrumentation fitted atop the second stage, but by the time the rocket was actually built, it had been moved to a position atop the payload.

[edit] See also

[edit] External links



Saturn Family of Launch Vehicles
v  d  e
Early Proposals: Juno V | Saturn A-1 | Saturn A-2 | Saturn B-1
"C" series: Saturn C-1 | Saturn C-2 | Saturn C-3 | Saturn C-4 | Saturn C-5 | Saturn C-5N | Saturn C-8
Saturn 1 series: Saturn I | Saturn IB | Saturn IB-CE | Saturn IB-A | Saturn IB-B | Saturn IB-C | Saturn IB-D | Saturn INT-05 | Saturn INT-11 | Saturn INT-12 | Saturn INT-13 | Saturn INT-14 | Saturn INT-15 | Saturn INT-16 | Saturn INT-27 | Saturn LCB
Saturn II series: Saturn II | Saturn INT-17 | Saturn INT-18 | Saturn INT-19
Saturn V series: Saturn V | Saturn MLV | Saturn V ELV | Saturn INT-20 | Saturn INT-21 | Saturn INT-23 | Saturn INT-24 | Saturn INT-25 | Saturn-Shuttle | Saturn V-3 | Saturn V-A | Saturn V-B | Saturn V-C | Saturn V-D | Saturn V-Centaur | Jarvis