 Rocketdyne XRS-2200 hotfire test | |
| Country of origin | United States |
|---|---|
| Date | 1999 |
| Designer | Rocketdyne |
| Manufacturer | Rocketdyne |
| Application | X-33 |
| Predecessor | J-2S |
| Status | Experimental |
| Liquid-fuel engine | |
| Propellant | LOX / LH2 |
| Cycle | Gas Generator |
| Configuration | |
| Nozzle ratio | 58:1 |
| Performance | |
| Thrust, vacuum | 1,184 kN (266,000 lbf) |
| Thrust, sea-level | 909 kN (204,000 lbf) |
| Chamber pressure | 58 bar (840 psi) |
| Specific impulse, vacuum | 439 seconds (4.31 km/s) |
| Specific impulse, sea-level | 339 seconds (3.32 km/s) |
| Dimensions | |
| Length | 2.01 m (6 ft 7 in) |
The Rocketdyne XRS-2200 was an experimental linear aerospike engine developed in the mid-1990s for the Lockheed Martin X-33 program.[1][2][3] The design was based on the J-2S, the upgraded version of the Apollo era J-2 engine developed in the 1960s. The XRS-2200 used the J-2's combustion cycle and propellant choice.[4]
Rocketdyne intended to develop the subscale XRS-2200 into the RS-2200 for use on the VentureStar. While the X-33 program was cancelled, two XRS-2200 engines were produced and tested.[5]
References
[edit]- ^ "Boeing Rocketdyne XRS-2200 Linear Aerospike". engineering.purdue.edu. Retrieved 2019-08-26.
- ^ "XRS-2200 Link". www.hq.nasa.gov. Washington D.C., U.S.: NASA Headquarters. Archived from the original on 2016-03-22. Retrieved 2019-09-29.
- ^ Rowbotham, Maureen (1999). "XRS-2200 linear aerospike engine - Use of Pro/ENGINEER for determining mass properties". 35th Joint Propulsion Conference and Exhibit. U.S.: American Institute of Aeronautics and Astronautics. doi:10.2514/6.1999-2334. Retrieved 2019-09-29.
- ^ "XRS-2200". www.astronautix.com. Encyclopedia Astronautica. Archived from the original on December 28, 2016. Retrieved 2019-08-26.
- ^ D'Agostino, M.G. (January 2001). "X-33 XRS-2200 Linear Aerospike Engine Sea Level Plume Radiation" (PDF). NASA Technical Reports Server.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
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