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“Bite-Size Bits of Local, National, and Global History”

Houston in Harris County, Texas — The American South (West South Central)
 

J-2 Engine: Versatile Sidekick

 
 
J-2 Engine: Versatile Sidekick Marker image. Click for full size.
By J. Makali Bruton, October 5, 2019
1. J-2 Engine: Versatile Sidekick Marker
Inscription.  

J-2 Engine: Versatile Sidekick
Engines like this J-2 powered stages 2 and 3 of the Saturn V.

STAGE 2
A cluster of five J-2 engines took over at an altitude of about 38 miles (61 km). The five J-2 engines boosted the rocket to 114.5 miles (184.3 km), speeding from 6,000 miles (9,700 km) to 15,300 miles (24,600 km) per hour.

STAGE 3
Unlike other liquid-fueled engines used in the Apollo program, J-2 engines could be restarted. This special capability was used on the Saturn V third stage. A single J-2 engine boosted the spacecraft into low-Earth orbit. After performance checks, the J-2 was reignited for translunar injection, a 6.5-minute burn which accelerated the vehicle on a course for the Moon.

J-2 engines were used on the Saturn IB and Saturn V rockets for launches from the late 1960s through the mid-1970s. Saturn IB rockets were used for Apollo spacecraft tests, the three missions of Skylab, and the Apollo-Soyuz Test Project.

Height: 11.1 feet (3.4 m)
Diameter: 6.75 feet (2.05 m)
Propellants: liquid hydrogen and liquid oxygen
Thrust: 230,000 pounds-force (1,023 kN)
 
Location.
J-2 Engine: Versatile Sidekick and Marker image. Click for full size.
By J. Makali Bruton, October 5, 2019
2. J-2 Engine: Versatile Sidekick and Marker
29° 33.268′ N, 95° 5.622′ W. Marker is in Houston, Texas, in Harris County. Marker can be reached from Second Street south of Avenue D, on the left when traveling south. The marker is just outside the Saturn V display at Johnson Space Center. Touch for map. Marker is in this post office area: Houston TX 77058, United States of America. Touch for directions.
 
Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies. Mercury-Redstone: Putting the First Americans in Space (here, next to this marker); F-1 Engine: Power for the Rocket (here, next to this marker); H-1 Engine: A Powerful Start (here, next to this marker); Little Joe II (within shouting distance of this marker); Little Joe II and BP-22: Safety First (within shouting distance of this marker); Saturn V Rocket (about 400 feet away, measured in a direct line); Apollo Mission Control Center (approx. 0.4 miles away); West Mansion (was approx. 1.2 miles away but has been reported missing. ). Touch for a list and map of all markers in Houston.
 
Categories. Air & SpaceScience & Medicine
 
Five J-2 Engines on Stage 2 of the Saturn V. image. Click for full size.
By J. Makali Bruton, October 5, 2019
3. Five J-2 Engines on Stage 2 of the Saturn V.
 

More. Search the internet for J-2 Engine: Versatile Sidekick.
 
Credits. This page was last revised on October 17, 2019. This page originally submitted on October 17, 2019, by J. Makali Bruton of Querétaro, Mexico. This page has been viewed 51 times since then and 4 times this year. Photos:   1, 2, 3. submitted on October 17, 2019, by J. Makali Bruton of Querétaro, Mexico.
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