Tag Archives: Rocketdyne H-1

16 February 1965, 14:37:03 UTC

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Pegasus A/SA-9 (AS-103) liftoff, 16 February 1965, 14:37:03 UTC (NASA KSC 65-19630)

16 February 1965: At 9:37:03 a.m., Eastern Standard Time (14:37:03 UTC), Pegasus A (later redesignated Pegasus I), a satellite designed to detect meteoroid impacts in Earth orbit, is launched from Launch Complex 37B at the Cape Kennedy Air Force Station, Cape Kennedy, Florida, aboard a Saturn I Block II launch vehicle. The satellite is enclosed in a boiler plate Apollo Command and Service Module.

The all-up vehicle is designated AS-103. The combined first and second stage launch vehicle is designated SA-9. It consisted of an S-I first stage (S-I-9) and S-IV second stage (S-IV-9). The boilerplate Apollo CSM is identified as BP-16.

The three Pegasus satellites were the only ones to use a Saturn launch vehicle. Pegasus A was the largest satellite launched up to that date, with a mass of 1,451.5 kilograms (3,200 pounds).

This was the eighth flight of a Saturn I rocket, and the fourth for a Saturn IV second stage.

AS-103 lifted off from a 47 foot × 47 foot (14.33 × 14.33 meters) square metal pedestal. At the center of the pedestal was a 32-foot diameter dodecagon-shaped opening for the rocket engines’ exhaust. A twin-sloped flame deflector under the pedestal was coated with a concrete-like heat-resistant material to minimize damage to the deflector.

The trajectory of AS-103. (NASA Press Kit 65-38)

At T+8 seconds, AS-103 began a roll and pitch maneuver, taking it to a flight azimuth of 105°. The roll maneuver ended 15 seconds later. The Saturn I reached Mach 1 at T+54 seconds, and the maximum dynamic pressure (max Q) at T+66. The pitch program was completed at T+138. At T+140.22, the four inboard H-1 engines were cut off (IECO), and the outer engines, 5.34 seconds later (OECO).  At this time, AS-103 had reached an altitude of 55 miles (89 kilometers), and was 44 miles (77 kilometers) downrange. It was traveling at 6,000 miles per hour (9,656 kilometers per hour).

The Saturn I first stage was jettisoned. Four solid fuel retro rockets were to slow the first stage, but one malfunctioned shortly after ignition. The first stage impacted the ocean surface at T+718.95, 961.29 kilometers (597.32 miles) down range. (N. 25.8155, W. 71.3491)

At T+148.12, the command to start the six RL10 engines of the second stage was sent. The two stages had separated by 10.95 meters (35.93 feet) at engine ignition. (the minimum requirement was 3 meters/9.8 feet.) Ten seconds later, the Launch Escape System was jettisoned.

After about 8 minutes, at T+631.659, the S-IV-9 engines were cut off and the vehicle was inserted into orbit 1,200 miles, (1,931 kilometers) downrange, with a velocity of 8,091.1 meters per second (29,128 kilometers per hour/18,099 miles per hour).

At T+813, the Command and Service Module was separated, and at T+863.4, the Pegasus wings began to deploy. This took 39.6 seconds. These panels had an overall span of 96 feet (29.261 meters) and width of 14 feet (4.267 meters). They carried 208 detector panels. Each panel was 3 feet, 4 inches × 1 foot, 8 inches × 1 inch (1.016 x 0.508 x 0.0254 meters).

A 50-second video of this evolution can be seen on YouTube at:

Pegasus I stabilized in a 430.00  × 523.00 kilometer (267.19 × 329.33 miles) elliptical orbit with a period of 94.10 minutes. As residual fuel (approximately 700 pounds) from the S-IV second stage, which remained attached to the satellite, vented, Pegasus began to tumble.

Pegasus I had about eighty times the detecting area than the Explorer I satellite, which had been launched 31 January 1958. By late May 1965, more than 70 meteoroid hits had been detected.

NASA issued a contract to build three Pegasus satellites, two for flight and third as a backup, to the Fairchild Stratos Corporation in February 1963. (Fairchild Hiller Corporation after 1964.) Final assembly took place at the Aircraft-Missiles Division, Hagerstown, Maryland. (In fact, all three were launched.) Pegasus A was transported by aircraft and arrived at Cape Kennedy Air Force Station on 20 December 1964.


“In this photograph, the Pegasus, meteoroid detection satellite is installed in its specially modified Apollo service module atop the S-IV stage (second stage) of a Saturn I vehicle for the SA-9 mission at Cape Kennedy. Personnel in the service structure moved the boilerplate Apollo command module into place to cap the vehicle. The command and service modules, visible here, were jettisoned into orbit to free the Pegasus for wing deployment. The SA-9 was launched on February 16, 1965.”
(NASA)

When stored inside the boiler plate command and service module, the satellite was 17 feet, 4 inches (5.283 meters) long, 7 feet, 0 inches (2.134 meters) wide, and 9.5 inches (24.13 centimeters) deep.

Pegasus I was deactivated 29 August 1968. Its orbit decayed and it reentered the Earth’s atmosphere 17 September 1978. BP-16, the boilerplate Apollo CSM, remained in orbit until 10 July 1985.

Diagram from “RESULTS OF THE EIGHTH SATURN I  LAUNCH VEHICLE TEST FLIGHT SA-9” MPR-SAT-FE-66-4, at Page 97)

AS-103 consisted of a Saturn I Block II first stage, S-I-9; a S-IV second stage, S-IV-9; a boilerplate Apollo Command and Service Module, BP-16; with a Launch Escape System tower. It had a height of approximately 57.3 meters (187.99 feet). It weighed 1,110,941 pounds (503,914 kilograms) at First Motion, including 878,179 pounds (398,335 kilograms) of propellant.

S-I-9 was the last Saturn S-I first stage to be built at NASA’s Marshall Space Flight Center in Huntsville, Alabama. (SA-8, SA-10, and the following Saturn first stage boosters were produced by the Chrysler Corporation Space Division at NASA’s Michoud Assembly Facility in New Orleans, Louisiana.) The Block II variant was modified for use by the United States Air Force to launch it’s proposed X-20 Dyna-Soar manned orbital vehicle. The most visible modification are the very large fins for enhanced stability, along with four smaller stub fins. These fins extended radially 9 feet (2.7 meters) from the thrust structure, and each had a surface area of 121 square feet (11.24 square meters). S-I-9 was barged to the Cape Kennedy Air Force Station, arriving there 30 October 1964.

Saturn I Block II first stage. 1. TV Camera, 2. Movie Camera, 3. Hydrogen Chill-Down Duct, 4. Cable Tunnel, 5. Four Turbine Exhaust Ducts, 6. Four Stub Fins, 7. Eight H-1 Engines, 8. Four Fins, 9. Heat Shield, 10. Firewall, 11. Anti-Slosh Baffles, 12. One 105-inch (2.667 meters) Diameter LOX Tank, 12. Anti-Slosh Baffles Eight 70-inch (1.778 meters) diameter Tanks, 13. Instrument Compartment (typical F-1 & F-2), 14. Four Retro-Rockets. (NASA MSFC-9801761)

S-I-9 was 80.3 feet (20.275 meters) long and 21.4 feet (6.523 meters) in diameter. Eight Redstone 5 feet, 10 inch (1.778 meters) diameter rocket fuel tanks, with four containing the RP-1 fuel, and four filled with liquid oxygen, surrounded a 8 feet, 9 inch (2.667 meter) diameter Jupiter rocket fuel tank containing liquid oxygen. The stage was powered by eight uprated Rocketdyne H-1 engines. The eight engines produced 1,500,000 pounds of thrust (6,672 kilonewtons) at Sea Level.

The Saturn S-IV-9 second stage was built by the Douglas Aircraft Company’s Missile & Space Division, Huntington, Beach, California. It was 41.5 feet (12.65 meters) long and 18.5 feet (5.64 meters) in diameter and had an empty weight of about 14,000 pounds (6,350 kilograms). It carried 100,386 pounds (45,534 kilograms) of propellant. The stage was powered by six Pratt & Whitney RL10A-3 rocket engines. The six engines produced 88,976 pounds of thrust (395.785 kilonewtons). The stage was coated with a special heat resistant paint developed by the Illinois Institute of Technology, Chicago. The S-IV stage was transported by aircraft and arrived at the Cape Kennedy Air Force Station 23 October 1964.

Pegasus Deployment Sequence (NASA)

“Fairchild technicians check out the extended Pegasus meteoroid detection surface. The Pegasus was developed by Fairchild Stratos Corporation, Hagerstown, Maryland, for NASA through the Marshall Space Flight Center. After being placed into orbit around the Earth, the satellite unfolded a series of giant panels to form a pair of wings measuring 96 feet across.” (NASA)

NASA considered the Saturn S-I series to be remarkably successful. Up to this time, new rockets failed at a rate of 50% during two to three dozen tests.

© 2024, Bryan R. Swopes

22 January 1968, 22:48:08.86 UTC, T + 00:00:00.86

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Apollo 5 Saturn IB (AS-204) lifts off with LM-1 at Launch Complex 37B, Cape Kennedy Air Force Station, Cape Canaveral, Florida, at 22:48:09 UTC, 22 January 1968. (NASA)

22 January 1968: At 22:48:00.86 UTC (5:48:08 a.m., Eastern Standard Time) a Saturn IB rocket lifted off from Launch Complex 37B at the Cape Kennedy Air Force Station, Cape Kennedy, Florida, carrying LM-1, an unmanned Apollo Program lunar lander, into a low-Earth orbit.

AS-204 reached Mach 1 at T + 0:59.8, passing 24,574 feet (7,490.16 meters). First stage separation occurred at T + 02:23.6, at an altitude of 194,228 feet (59,201 meters), with the vehicle accelerating through 7,563 feet per second (2,305 meters per second).

The AS-204 S-IVB engine cut off occurred at T + 09:53 at 536,166 feet (163,423 meters) with the vehicle travelling 25,659 feet per second (7,820 meters per second). Orbital insertion occurred at T + 00:10:03 at an altitude of 88 nautical miles (163 kilometers) with a velocity of 25,684 feet per second (7,828 meters per second). The orbit was elliptical with an apogee of 120 nautical miles (222 kilometers) and perigee of 88 nautical miles (163 kilometers). The orbital period was 88.39 minutes.

Apollo 5 lefts off from Launch Complex (NASA)

The Lunar Module separated from the S-IVB stage at T + 00:53:55.24. It was the allowed to cold-soak for about 3 hours. At T + 03:59.46, the LM’s descent engine was fired but aborted by the guidance computer after 4.0 seconds. A little over 3 hours later, at T + 06:10:42, the descent engine was fired a second time, and burned until T +  06:13:14.7.

The ascent engine fired at  06:12:14.7 while the descent and ascent stages were still joined. The engine burned 60.0 seconds. It was fired a second time at T + 07:44:13.

With the tests completed, the orbits of the separated LM stages were allowed to decay. LM-1 quickly re-entered Earth’s atmosphere and was destroyed.

The purpose of the Apollo 5 mission was to test the Grumman-built Lunar Module in actual spaceflight conditions. Engines for both the descent and ascent stages had to be started in space, and be capable of restarts. Although the mission had some difficulties as a result of programming errors, it was successful and a second test flight with LM-2 determined to be unnecessary and was cancelled.

Apollo 5/Saturn IB (AS-204) clears the tower at Launch Complex 37B, Cape Kennedy Air Force Station, Cape Canaveral, Florida, 22:48 UTC, 22 January 1968. (NASA)

SA-204 ¹ had originally been the scheduled launch vehicle for the Apollo 1 manned orbital flight.

When a fire in the command module killed astronauts Virgil I. (“Gus”) Grissom, Edward H. White and Roger B. Chaffee, 27 January 1967, the rocket was undamaged. It was moved from Launch Complex 39 and reassembled at LC 37B for use as the launch vehicle for Apollo 5.

Apollo 5 Saturn IB AS-204 at Launch Complex 37B, 22 January 1968. (NASA)

The Saturn IB AS-204 was a two-stage, liquid-fueled, heavy launch vehicle. It consisted of a S-IB first stage and S-IVB second stage. The total height of AS-204 was 181 feet, 0.355 inches (55.17782 meters). The Saturn IB rocket stood 141 feet, 8.644 inches (43.19636 meters), without payload. It had a maximum diameter of 22.8 feet (6.949 meters), and the span across the first stage guide fins was 40.7 feet (12.405 meters). Its empty weight was 159,000 pounds (72,122 kilograms) and at liftoff, Apollo 5 weighed 1,285,044 pounds (582,886 kilograms). The Saturn IB was capable of launching a 46,000 pound (20,865 kilogram) payload to Earth orbit.

The S-IB first stage was built by the Chrysler Corporation Space Division at the Michoud Assembly Facility near New Orleans, Louisiana. The first stage was 80 feet, 4.089 inches (24.4878606 meters) long, with a maximum diameter of 21 feet, 8.0 inches (6.604 meters) (21 feet, 5.0 inches across the Redstone tanks). The stage was powered by eight Rocketdyne H-1 engines, burning RP-1 and liquid oxygen. Eight Redstone rocket fuel tanks, with four containing the RP-1 fuel, and four filled with liquid oxygen, surrounded a Jupiter rocket fuel tank containing liquid oxygen. Total thrust of the S-IB stage was 1,666,460 pounds (7,417.783 kilonewtons) and it carried sufficient propellant for a maximum 4 minutes, 22.57 seconds of burn. The first stage of AS-204 was S-IB-4.

Saturn S-IB first stages in final assembly at Michoud, 1967. (NASA GPN-2000-000043)

The McDonnell Douglas Astronautics Company S-IVB stage was built at Huntington Beach, California. The stage was 61 feet, 4.555 inches (18.708497 meters) long, with a maximum diameter of 21 feet, 8.0 inches (6.604 meters). It was powered by a single Rocketdyne J-2 engine, fueled by liquid hydrogen and liquid oxygen. The J-2 produced 229,714 pounds of thrust (1,021.819 kilonewtons), at high thrust, and 198,047 pounds (880.957 kilonewtons) at low thrust). The second stage carried enough fuel for 7 minutes, 49.50 seconds burn at high thrust.

Three-view drawing of the Lunar Module with dimensions. (NASA)

The Lunar Module was a two-stage vehicle designed to transport two astronauts from Lunar Orbit to the surface of the Moon, provide shelter and a base of operations while on the Moon, and then return the astronauts to lunar orbit, rendezvousing with the Apollo Command and Service Module.  It was designed and built by the Grumman Aerospace Corporation at Bethpage, Long Island, New York.

The Descent Stage incorporated extendable landing gear, a hypergolic-fueled rocket engine to brake from orbital speed, establish a landing trajectory, and then decelerate for landing. The TRW Space Technology Laboratories Lunar Module Descent Engine (LMDE) produced a maximum of 10,500 pounds of thrust (46.706 kilonewtons), and could be throttled from 10–100% thrust. The stage also carried support equipment, oxygen, water, etc., needed by the astronauts, and equipment for use during surface activities.

To return to Lunar Orbit, the Descent Stage was left behind, and the Bell Aerosystems Lunar Module Ascent Engine (LMAE) was fired. This engine also used hypergolic fuel and produced 3,500 pounds of thrust (15.569 kilonewtons).

LM-1 weighed 36,342 pounds (16,484 kilograms).

Apollo Lunar Module LM-1 being assembled with upper stage. (NASA)
Apollo Lunar Module LM-1 being assembled with upper stage. (NASA)

¹ The Apollo Program Saturn rockets were designated as both AS-xxx and SA-xxx. The AS-xxx designation was applied to the complete vehicle, or “full stack,” while the SA-xxx designation applied to only the multi-stage rocket assembly.

© 2019, Bryan R. Swopes

16 November 1973

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Skylab 4 (SA-208) lift off from Launch Complex 39B, 14:01:23 UTC, 16 November 1973. (NASA)

16 November 1973: Skylab 4 lifted off from Launch Complex 39B, Kennedy Space Center, at 14:01:23 UTC. Aboard the Apollo Command and Service Module were NASA astronauts Lieutenant Colonel Gerald Paul Carr, U.S. Marine Corps, Mission Commander;  Lieutenant Colonel William Reid Pogue, U.S. Air Force; and Edward George Gibson, Ph.D. This would be the only space mission for each of them. They would spend 84 days working aboard Skylab.

Skylab 4 crew, left to right, Carr, Gibson and Pogue. (NASA)
Skylab 4 crew, left to right, Gerald Carr, Edward Gibson and William Pogue. (NASA)

The launch vehicle was a Saturn IB, SA-208. This rocket had previously stood by as a rescue vehicle during the Skylab 3 mission. The Saturn IB consisted of an S-IB first stage and an S-IVB second stage.

Saturn IB Launch Vehicle. (NASA)
Mission SL-2 Saturn IB Launch Vehicle. (NASA)

The S-IB was built by Chrysler Corporation Space Division at the Michoud Assembly Facility near New Orleans, Louisiana. It was powered by eight Rocketdyne H-1 engines, burning RP-1 and liquid oxygen. Eight Redstone rocket fuel tanks, with 4 containing the RP-1 fuel, and 4 filled with liquid oxygen, surrounded a Jupiter rocket fuel tank containing liquid oxygen. Total thrust of the S-IB stage was 1,666,460 pounds (7,417.783 kilonewtons) and it carried sufficient propellant for a maximum 4 minutes, 22.57 seconds of burn. First stage separation was planned for n altitude of 193,605 feet, with the vehicle accelerating through 7,591.20 feet per second (2,313.80 meters per second).

The McDonnell Douglas Astronautics Co. S-IVB stage was built at Huntington Beach, California. It was powered by one Rocketdyne J-2 engine, fueled by liquid hydrogen and liquid oxygen. The J-2 produced 229,714 pounds of thrust (1,021.819 kilonewtons), at high thrust, and 198,047 pounds (880.957 kilonewtons) at low thrust). The second stage carried enough fuel for 7 minutes, 49.50 seconds burn at high thrust. Orbital insertion would be occur 9 minutes, 51.9 seconds after launch, at an altitude of 98.5 miles (158.5 kilometers) with a velocity of 25,705.77 feet per second (7,835.12 meters per second).

The Skylab-configuration Saturn IB rocket was 223 feet, 5.9 inches (68.119 meters) tall. It had a maximum diameter of 22.8 feet (6.949 meters), and the span across the first stage guide fins was 40.7 feet (12.405 meters). Its empty weight was 159,000 pounds (72,122 kilograms) and at liftoff, it weighed 1,296,000 pounds (587,856 kilograms). It was capable of launching a 46,000 pound (20,865 kilogram) payload to Earth orbit.

Skylab in Earth orbit, as seen by the departing Skylab 4 mission crew, 8 February 1974. (NASA)
Skylab in Earth orbit, as seen by the departing Skylab 4 mission crew, 8 February 1974. (NASA)

© 2018, Bryan R. Swopes

27 October 1961: 15:06:04 UTC, T minus Zero

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The first Saturn C-1 three-stage heavy-lift rocket, SA-1, on the launch pad at Cape Canaveral, 27 October 1961. The gantry tower has been pulled back. (NASA)

27 October 1961: At 15:06:04 UTC, (10:06 a.m., EST), 3.97 seconds after ignition,  the first Saturn C-1 heavy launch vehicle (Saturn I, SA-1) lifted off from Launch Complex 34 at Cape Canaveral, Florida. This was a test of the first stage, only. The rocket’s upper stages were dummies.

At about 109 seconds after liftoff, four inner engines of the first stage shut down, followed 6 seconds later by the outer four. The rocket continued on a ballistic trajectory.

The Saturn C-1 was bigger than any rocket built up to that time. Early versions of the three-stage rocket were 162 feet, 8.90 inches (49.6037meters) tall, with a maximum diameter of 21 feet, 5.0 inches (6.528 meters). The all-up weight was 1,124,000 pounds (509,838 kilograms).

Saturn S-I first stage at MSFC. (NASA)

The first stage of SA-1 was built by the Marshall Space Flight Center (MSFC) at Huntsville, Alabama. The S-I stage was built up with a Jupiter rocket fuel tank in the center for liquid oxygen, surrounded by eight Redstone rocket tanks. Four were filled with RP-1 propellant, alternating with four filled with LOx. The first stage was powered by eight Rocketdyne Division H-1 engines rated at 165,000 pounds of thrust (733.96 kilonewtons), each. Total thrust for the first stage was 1,320,000 pounds (5,871.65 kilonewtons). The outer four engines were gimbaled to steer the rocket. (The S-I Block I stage had no fins.)

The first stage had been test fired 20 times before being transported to Cape Canaveral by barge.

For the first flight, SA-1, the S-!V second stage and S-V third stage were dummies. The S-IV was filled with 90,000 pounds (40,823 kilograms) of water for ballast. The S-V third stage,  carried 100,000 pounds (45,359 kilograms) of water. Mounted above the third stage was a Jupiter nose cone.

The Saturn C-1 weighed 925,000 pounds (419,573 kilograms). It contained 41,000 gallons (155,200 liters) of RP-1, a refined kerosene fuel, with 66,000 gallons (249,837 liters) of liquid oxygen oxidizer— 600,000 pounds (272,155 kilograms) of propellants.

SA-1 reached a maximum speed of 3,607 miles per hour (5,805 kilometers per hour), and a peak altitude of 84.813 miles (136.493 kilometers). It impacted in the Atlantic Ocean 214.727 miles (345.570 kilometers) down range. The duration of the flight was 15 minutes, 0 seconds. The flight was considered to be nearly flawless.

At Launch Complex 34, the eight Rocketdyne H-1 engines of Saturn C-1 SA-1 are firing. The hold down arms have not yet released. 15:06:04 UTC, 27 October 1961. (NASA)
Saturn SA-1 accelerates after liftoff, 27 October 1961. (NASA 0102626)
Saturn SA-I leaves a trail of fire from the launch pad. (NASA)

© 2018, Bryan R. Swopes

11 October 1968, 15:02:45 UTC, T plus 000:00:00.36

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Apollo 7 Saturn 1B (AS-205) lifts off from Launch Complex 34 at the Kennedy Space Center, 15:02:45 UTC, 11 October 1968. (NASA)
Apollo 7 Saturn 1B (AS-205) lifts off from Launch Complex 34, Cape Kennedy Air Force Station, 15:02:45 UTC, 11 October 1968. (NASA)

11 October 1968: at 15:02:45 UTC, Apollo 7, the first manned Apollo spacecraft, was launched aboard a Saturn IB rocket from Launch Complex 34, Cape Kennedy Air Force Station, Cape Kennedy, Florida.

The flight crew were Captain Walter M. (“Wally”) Schirra, United States Navy, the mission commander, on his third space flight; Major Donn F. Eisele, U.S. Air Force, the Command Module Pilot, on his first space flight; and Major R. Walter Cunningham, U.S. Marine Corps, Lunar Module Pilot, also on his first space flight.

The flight crew of Apollo 7, left to right: Donn Eisele, USAF, Capain Walter M. ("Wally") Schirra, USN, and Major R. Walter Cunningham, USMC. (NASA)
The flight crew of Apollo 7, left to right: Major Donn F. Eisele, USAF, Captain Walter M. (“Wally”) Schirra, USN, and Major R. Walter Cunningham, USMCR. (NASA) 

The mission was designed to test the Apollo spacecraft and its systems. A primary goal was the test of the Service Propulsion System (SPS), which included a restartable Aerojet AJ10-137 rocket engine which would place an Apollo Command and Service Module into and out of lunar orbit on upcoming missions.

The SPS engine was built by Aerojet General Corporation, Azusa, California. It burned a hypergolic fuel combination of Aerozine 50 (a variant of hydrazine) and nitrogen tetraoxide, producing 20,500 pounds of thrust. It was designed for a 750 second duration, or 50 restarts during a flight. This engine was fired eight times and operated perfectly.

The duration of the flight of Apollo 7 was 10 days, 20 hours, 9 minutes, 3 seconds, during which it orbited the Earth 163 times. The spacecraft splashed down 22 October 1968, approximately 230 miles (370 kilometers) south south west of Bermuda in the Atlantic Ocean, 8 miles (13 kilometers) from the recovery ship, the aircraft carrier USS Essex (CVS-9).

The Apollo command module was a conical space capsule designed and built by North American Aviation to carry a crew of three on space missions of two weeks or longer. Apollo 7 (CSM-101) was the first Block II capsule, which had been extensively redesigned following the Apollo 1 fire which had resulted in the deaths of three astronauts. The Block II capsule was 10 feet, 7 inches (3.226 meters) tall and 12 feet, 10 inches (3.912 meters) in diameter. It weighed 12,250 pounds (5,557 kilograms). There was 218 cubic feet (6.17 cubic meters) of livable space inside.

Apollo 7/Saturn IB AS-205.at Launch Complex 34.(NASA)

The Saturn IB consisted of an S-IB first stage and an S-IVB second stage. The S-IB was built by Chrysler. It was powered by eight Rocketdyne H-1 engines, burning RP-1 and liquid oxygen. Eight Redstone rocket fuel tanks containing the RP-1 fuel surrounded a Jupiter rocket tank containing the liquid oxygen. Total thrust of the S-IB stage was 1,600,000 pounds and it carried sufficient propellant for 150 seconds of burn. This would lift the vehicle to an altitude of 37 nautical miles (69 kilometers).

The Douglas-built S-IVB stage was powered by one Rocketdyne J-2 engine, fueled by liquid hydrogen and liquid oxygen. The single engine produced 200,000 pounds of thrust and had enough fuel for 480 seconds of burn.

The Saturn IB rocket stood 141 feet, 6 inches (43.13 meters) without payload. It was capable of launching a 46,000 pound (20,865 kilogram) payload to Earth orbit.

Apollo 7 Saturn 1B AS-205 in flight above Cape Kennedy Air Force Station, 11 October 1968. (NASA)
Apollo 7 Saturn 1B AS-205 in flight above Cape Kennedy Air Force Station, 11 October 1968. (NASA)
Apollo 7 at 35,000 feet (10,668 meters). (NASA)
Staging. Apollo 7 Saturn IB first stage separation. (NASA)

© 2019, Bryan R. Swopes