Image by gezza-graphix on Pixabay · Pixabay License
R-4D
Sign in to saveAlso known as Marquardt R-4D, Aerojet R-4D
The R-4D is a small hypergolic rocket engine, originally designed by Marquardt Corporation for use as a reaction control system thruster on vehicles of the Apollo crewed Moon landing program. Aerojet Rocketdyne manufactures and markets modern versions of the R-4D.
Wikidata facts
- Country of origin
- United States
- Manufacturer
- Aerojet Rocketdyne
- Image
- Apollo RCS quad.jpg
- Has use
- apogee kick motor
Show 4 more facts
- inception
- 1960-00-00
- source of energy
- hypergolic propellant
- Commons category
- R-4D (rocket engine)
- used by
- communications satellite
via Wikidata · CC0
~2 min read
Encyclopedic overview
4 sectionsContents
- History
- Design
- Additional literature
- References
The R-4D is a small hypergolic rocket engine, originally designed by Marquardt Corporation for use as a reaction control system thruster on vehicles of the Apollo crewed Moon landing program. Aerojet Rocketdyne manufactures and markets modern versions of the R-4D.
==History== Developed as an attitude control thruster for the Apollo Command/Service Module and Lunar Module in the 1960s, each unit for the modules employed four quadruple clusters (pods). It was first flown on AS-201 in February 1966. Approximately 800 were produced during the Apollo program.
Excerpted from Wikipedia’s “R-4D” article, available under the CC BY-SA 4.0 licence.