Tag Archives: Rocketdyne Division of North American Aviation Inc.

16 November 1973

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

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14 November 1969, 16:24:42.4 UTC, T plus 2:42.4

Saturn V S-IC first stage separation. (NASA)
Saturn V S-IC first stage separation. (NASA)

14 November 1969, 16:24:43.4 UTC: The Apollo 12 Saturn 5 passes 42 miles (67 kilometers) altitude at 5,145 miles per hour (8,280 kilometers per hour). The rocket reaches it maximum inertial acceleration of 3.91 g.

At T plus 2 minutes, 42.4 seconds, Apollo 12’s S-IC first stage separates. 0.8 seconds later, the S-II stage Rocketdyne J-2 engines ignited.

© 2017, Bryan R. Swopes

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14 November 1969, 16:22:00.68 UTC, T plus 000.00.00.68

Apollo 12 Saturn V (AS-507) lifts off from Launch Complex 39A at the Kennedy Space Center, Cape Canaveral, Florida, at 16:22:00 UTC, 14 November 1969. (NASA image scanned and remastered by Dan Beaumont)

14 November 1969: At 16:22:00.68 UTC (11:22:00 a.m., Eastern Standard Time), the Apollo 12 Saturn V (AS-507) lifted off from Launch Complex 39A, Kennedy Space Center, Cape Canaveral, Florida.

This was the second manned space flight to the Moon. The flight crew were Commander Charles “Pete” Conrad, Jr., United States Navy, Mission Commander; Commander Richard F. Gordon, Jr., U.S. Navy, Command Module Pilot; Commander Alan L. Bean, U.S. Navy, Lunar Module Pilot.

Their destination was Oceanus Procellarum.

The crew of Apollo 12: Charles “Pete” Conrad, Jr., Richard F. Gordon, Jr., and Alan L. Bean. (NASA)

Two lightning strikes 36.5 seconds after liftoff caused the spacecraft’s automatic systems to shut down three fuel cells, leaving Apollo 12 operating on battery power. A third electrical disturbance at T + 52 seconds caused the “8 ball” attitude indicator in the cockpit to fail. A quick thinking ground controller, the “EECOM,” called “Try SCE to Aux.” Alan Bean recalled this from a simulation a year earlier, found the correct switch and restored the failed systems.

The lightning discharge was caused by the Apollo 12/Saturn V vehicle accelerating through rain at approximately 6,300 feet (1,950 meters). There were no thunderstorms in the area. Post-flight analysis indicates that it is probable that the lightning discharge started at the top of the Apollo 12/Saturn V vehicle. Energy of the discharge was estimated at 10⁴–10⁸ joules.

Lightning discharge near Launch Complex 39A (NASA)

Soon after passing Mach 1, the Saturn V rocket encountered the maximum dynamic pressure (“Max Q”) of 682.95 pounds per square foot (0.327 Bar) as it accelerated through the atmosphere.

The Saturn V rocket was a three-stage, liquid-fueled heavy launch vehicle. Fully assembled with the Apollo Command and Service Module, it stood 363 feet, 0.15 inches (110.64621 meters) tall, from the tip of the escape tower to the bottom of the F-1 engines. The first and second stages were 33 feet, .2 inches (10.089 meters) in diameter. Fully loaded and fueled the rocket weighed approximately 6,200,000 pounds (2,948,350 kilograms).¹ It could lift a payload of 260,000 pounds (117,934 kilograms) to Low Earth Orbit.

The first stage was designated S-IC. It was designed to lift the entire rocket to an altitude of 220,000 feet (67,056 meters) and accelerate to a speed of more than 5,100 miles per hour (8,280 kilometers per hour). The S-IC stage was built by Boeing at the Michoud Assembly Facility, New Orleans, Louisiana. It was 138 feet (42.062 meters) tall and had an empty weight of 290,000 pounds (131,542 kilograms). Fully fueled with 203,400 gallons (770,000 liters) of RP-1 and 318,065 gallons (1,204,000 liters) of liquid oxygen, the stage weighed 5,100,000 pounds (2,131,322 kilograms). It was propelled by five Rocketdyne F-1 engines, producing 1,522,000 pounds of thrust (6770.19 kilonewtons), each, for a total of 7,610,000 pounds of thrust at Sea Level (33,851 kilonewtons).² These engines were ignited 6.50 seconds prior to Range Zero and the outer four burned for 161.74 seconds. The center engine was shut down after 135.24 seconds to reduce the rate of acceleration. The F-1 engines were built by the Rocketdyne Division of North American Aviation at Canoga Park, California.

The S-II second stage was built by North American Aviation at Seal Beach, California. It was 81 feet, 7 inches (24.87 meters) tall and had the same diameter as the first stage. The second stage weighed 80,000 pounds (36,000 kilograms) empty and 1,060,000 pounds loaded. The propellant for the S-II was liquid hydrogen and liquid oxygen. The stage was powered by five Rocketdyne J-2 engines, also built at Canoga Park. Each engine produced 232,250 pounds of thrust (1,022.01 kilonewtons), and combined, 1,161,250 pounds of thrust (5,165.5 kilonewtons).³

The Saturn V third stage was designated S-IVB. It was built by Douglas Aircraft Company at Huntington Beach, California. The S-IVB was 58 feet, 7 inches (17.86 meters) tall with a diameter of 21 feet, 8 inches (6.604 meters). It had a dry weight of 23,000 pounds (10,000 kilograms) and fully fueled weighed 262,000 pounds. The third stage had one J-2 engine and also used liquid hydrogen and liquid oxygen for propellant. The S-IVB would place the Command and Service Module into Low Earth Orbit, then, when all was ready, the J-2 would be restarted for the Trans Lunar Injection.

Eighteen Saturn V rockets were built. They were the most powerful machines ever built by man.

¹ The AS-507 total vehicle mass at First Stage Ignition (T – 6.50 seconds) was 6,137,868  pounds (2,784,090 kilograms).

² Post-flight analysis gave the total thrust of AS-507’s S-IC stage as 7,594,000 pounds of thrust (33,780 kilonewtons).

³ Post-flight analysis gave the total thrust of AS-507’s S-II stage as 1,161,534 pounds of thrust (5,166.8 kilonewtons).

⁴ Post-flight analysis gave the total thrust of AS-507’s S-IVB stage as 206,956 pounds of thrust (920.6 kilonewtons) during the first burn; 207,688 pounds (923.8 kilonewtons) during the second burn.

© 2018, Bryan R. Swopes

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9 November 1967, 12:00:01.263 UTC, T plus 0.263

Apollo 4 Saturn V (AS-501) on the launch pad at sunset, the evening before launch, 8 November 1967. (NASA)
Apollo 4 Saturn V (AS-501) on the launch pad at sunset, the evening before launch, 8 November 1967. (NASA)

9 November 1967: The first flight of a Saturn V took place when the unmanned Apollo 4/Saturn V (AS-501) was launched from Pad 39A at the Kennedy Space Center, Cape Canaveral, Florida. The rocket lifted off at 12:00:01.263 UTC.

AS-501 consisted of the first Saturn V launch vehicle, SA-501, with Apollo Spacecraft 017 (a Block I vehicle with Block II upgrades), and included the Launch Escape Tower, Command Module, Service Module, Lunar Module Adapter, and Lunar Module Test Article LTA-10R).

The Saturn V rocket was a three-stage, liquid-fueled heavy launch vehicle. Fully assembled with the Apollo Command and Service Module, it stood 363 feet, 0.15 inches (110.64621 meters) tall, from the tip of the escape tower to the bottom of the F-1 engines. The first and second stages were 33 feet, 1.2 inches (10.089 meters) in diameter. Fully loaded and fueled the rocket weighed 6,200,000 pounds (2,948,350 kilograms).¹ It could lift a payload of 260,000 pounds (117,934 kilograms) to Low Earth Orbit.

The first stage was designated S-IC. It was designed to lift the entire rocket to an altitude of 220,000 feet (67,056 meters) and accelerate to a speed of more than 5,100 miles per hour (8,280 kilometers per hour). The S-IC stage was built by Boeing at the Michoud Assembly Facility, New Orleans, Louisiana. It was 138 feet (42.062 meters) tall and had an empty weight of 290,000 pounds (131,542 kilograms). Fully fueled with 203,400 gallons (770,000 liters) of RP-1 and 318,065 gallons (1,204,000 liters) of liquid oxygen, the stage weighed 5,100,000 pounds (2,131,322 kilograms). It was propelled by five Rocketdyne F-1 engines, producing 1,522,000 pounds of thrust, each, for a total of 7,610,000 pounds of thrust at Sea Level.² These engines were ignited seven seconds prior to lift off and the outer four burned for 168 seconds. The center engine was shut down after 142 seconds to reduce the rate of acceleration. The F-1 engines were built by the Rocketdyne Division of North American Aviation at Canoga Park, California.

A Rocketdyne F-1 engine is being installed on a Saturn S-IC first stage. (NASA)

The S-II second stage was built by North American Aviation at Seal Beach, California. It was 81 feet, 7 inches (24.87 meters) tall and had the same diameter as the first stage. The second stage weighed 80,000 pounds (36,000 kilograms) empty and 1,060,000 pounds loaded. The propellant for the S-II was liquid hydrogen and liquid oxygen. The stage was powered by five Rocketdyne J-2 engines, also built at Canoga Park. Each engine produced 232,250 pounds of thrust, and combined, 1,161,250 pounds of thrust.³

The Saturn V third stage was designated S-IVB. It was built by Douglas Aircraft Company at Huntington Beach, California. The S-IVB was 58 feet, 7 inches (17.86 meters) tall with a diameter of 21 feet, 8 inches (6.604 meters). It had a dry weight of 23,000 pounds (10,000 kilograms) and fully fueled weighed 262,000 pounds. The third stage had one J-2 engine and also used liquid hydrogen and liquid oxygen for propellant.⁴ The S-IVB would place the Command and Service Module into Low Earth Orbit, then, when all was ready, the J-2 would be restarted for the Trans Lunar Injection.

Eighteen Saturn V rockets were built. They were the most powerful machines ever built by man.

Apollo 4 Saturn V AS-501 lifts off at 12:00:01 UTC, 9 November 1967. (NASA)
Apollo 4 Saturn V (AS-501) lifts off at 12:00:01 UTC, 9 November 1967. (NASA)

¹ The AS-501 total vehicle mass at First Motion was 6,137,868 pounds (2,784,090 kilograms).

²  Post-flight analysis gave the total thrust of AS-501’s S-IC stage as 7,728,734.5 pounds of thrust (34,379.1 kilonewtons).

³ Post-flight analysis gave the total thrust of AS-501’s S-II stage as 1,086,396 pounds of thrust (4,832.5 kilonewtons).

⁴ Post-flight analysis gave the total thrust of AS-501’s S-IVB stage as 222,384 pounds of thrust (989.2 kilonewtons) during the first burn; 224,001 pounds (996.4 kilonewtons) during the second burn.

© 2017, Bryan R. Swopes

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

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

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