Feb 25

Space Rocket History #150 – Apollo 6: Pogo and the Tang Ceremony

The success of Apollo 4 gave good reason to believe that the Saturn V could be trusted to propel men into space. But NASA pushed on with its plans for a second unmanned booster flight, primarily to give the Pad 39 launch team another rehearsal before sending men into deep space on the Saturn V.  The mission was called Apollo 6…

Apollo 6 patch

Apollo 6 patch

Lunar Test Article

Lunar Test Article

Apollo 6 launch

Apollo 6 launch

Exhaust plume of Apollo 6

Exhaust plume of Apollo 6

Interstage falling away

Interstage falling away

Apollo 6 splashdown and recovery

Apollo 6 splashdown and recovery

Feb 18

Space Rocket History #149 – Apollo 5: Lunar Module’s First Flight

“The fire-in-the-hole abort was the most critical test of the mission and one we had to accomplish successfully prior to a manned mission.” Gene Kranz – Flight Director Apollo 5

Apollo 5 Mission Patch

Apollo 5 Mission Patch

Lunar Module 1 delivered to the Cape

Lunar Module 1 delivered to the Cape

LM 1 mated to the spacecraft lunar module adapter

LM 1 mated to the spacecraft lunar module adapter

LM 1 inside adapter being hoisted to the booster

LM 1 inside adapter being hoisted to the booster

Apollo 5 on the launch pad

Apollo 5 on the launch pad

Apollo 5 lift off

Apollo 5 lift off

Feb 11

Space Rocket History #148 – Apollo 4: Operation Big Shot

“…our building’s shaking here. Our building’s shaking! Oh it’s terrific, the building’s shaking! This big blast window is shaking! We’re holding it with our hands! Look at that rocket go into the clouds at 3000 feet!…you can see it…you can see it…oh the roar is terrific!…”  Walter Cronkite – Apollo 4 launch.

Apollo 4 mating of SC -017 with Saturn 501

Apollo 4 mating of SC -017 with Saturn 501

Apollo 4 on Launch Pad

Apollo 4 on Launch Pad

Apollo 4 the night before the launch

Apollo 4 the night before the launch

Apollo 4 lift off from LC-39A.

Apollo 4 lift off from LC-39A.

Apollo 4 leaves the launch pad

Apollo 4 leaves the launch pad

View of crescent Earth from Apollo 4.

View of crescent Earth from Apollo 4.

Jul 09

Space Rocket History #120 – Apollo: Stages S-IV and S-IVB

The key to high-energy stages was to use liquid hydrogen as the fuel.  Liquid hydrogen fuel appealed to rocket designers because of its high specific impulse, which is a basic measure of rocket performance. Specific Impulse is the impulse delivered per unit of propellant consumed.  You might think of it as the efficiency of the rocket.  Compared to an RP-1 (kerosene) fueled engine of similar size, liquid hydrogen fuel could increase the specific impulse or efficiency of an engine by 40 percent.  The combination of hydrogen and oxygen for propellants made the moon shot feasible.

S-IV Rocket Stage

S-IV Rocket Stage

S-IV & S-IVB Stage Position

S-IV & S-IVB Stage Position

S-IV Stage in Saturn IB and V

S-IV Stage in Saturn IB and V

S-IVB Differences Between Saturn IB and V

S-IVB Differences Between Saturn IB and V