Living Person
RS-68
is
As of April 20, 2026
16 years old
approximately!
Date of Birth
(2010 ) is
Tiger
Year
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
approx.Cosmic Age Calculator
Moon
approx. 219.1 years old
Mercury
approx. 68 years old
Venus
approx. 26.6 years old
Mars
approx. 8.7 years old
Jupiter
approx. 1.4 years old
Saturn
approx. 0.6 years old
* Calculated based on each planet's orbital period.
 An RS-68 engine undergoing hot-fire testing at NASA's Stennis Space Center during its developmental phase. | |
| Country of origin | United States |
|---|---|
| First flight | 20 November 2002 |
| Last flight | 9 April 2024 |
| Designer | Rocketdyne |
| Manufacturer |
|
| Application | First stage engine |
| Associated LV | Delta IV · Delta IV Heavy |
| Status | Retired |
| Liquid-fuel engine | |
| Propellant | LOX / LH2 |
| Cycle | Gas-generator |
| Configuration | |
| Nozzle ratio | 21.5:1 |
| Performance | |
| Thrust, sea-level | RS-68: 2,950 kN (660,000 lbf) RS-68A: 3,137 kN (705,000 lbf) |
| Thrust-to-weight ratio | RS-68: 45.3:1 RS-68A: 47.4:1 |
| Chamber pressure | 1,488 psi (10.26 MPa) |
| Specific impulse, vacuum | RS-68: 410 s (4.0 km/s) RS-68A: 411.9 s (4.039 km/s) |
| Dimensions | |
| Length | 5.20 m (17.1 ft) |
| Diameter | 2.43 m (8 ft 0 in) |
| Dry mass | RS-68: 6,600 kg (14,560 lb) RS-68A: 6,740 kg (14,870 lb) |
Look up "RS-68" on WikipediaWikipedia Categories
Loading...