LASRE


LASRE

LASRE was NASA's Linear Aerospike SR-71 Experiment which took place at the Dryden Flight Research Center at Edwards Air Force Base, California and concluded November 1998. The experiment's goal was to provide in-flight data to help Lockheed Martin validate the computational predictive tools they are using to determine the aerodynamic performance of a future potential reusable launch vehicle. Information from the LASRE experiment helped Lockheed Martin maximize its design for a future potential reusable launch vehicle. It gave Lockheed an understanding of the performance of the X-33 lifting body and linear aerospike engine combination.

LASRE was a small, half-span model of the X-33's lifting body with eight thrust cells of an aerospike engine, rotated 90 degrees and mounted on the back of an SR-71 Blackbird aircraft, to operate like a kind of "flying wind tunnel." The experiment focused on determining how a reusable launch vehicle's engine plume would affect the aerodynamics of its lifting body shape at specific altitudes and speeds reaching approximately 750 miles per hour (335 meters per second). The interaction of the aerodynamic flow with the engine plume could create drag; design refinements looked to minimize that interaction.

During the flight research program the aircraft completed seven research flights. Two initial flights were used to determine the aerodynamic characteristics of the LASRE apparatus on the back of the aircraft. The first of those two flights occurred October 31, 1997. The SR-71 took off at 8:31 a.m. PST. The aircraft flew for one hour and fifty minutes, reaching a maximum speed of Mach 1.2 and a maximum altitude of 33,000 feet (10,000 m) before landing at Edwards at 10:21 a.m. PST, successfully validating the SR-71/pod configuration.

Five follow-on flights focused on the experiment; two were used to cycle gaseous helium and liquid nitrogen through the experiment to check its plumbing system for leaks and to check engine operation characteristics. The first of these flights occurred March 4, 1998. The SR-71 took off at 10:16 a.m. PST. The aircraft flew for one hour and fifty-seven minutes, reaching a maximum speed of Mach 1.58 before landing at Edwards at 12:13 p.m. PST.

During three more flights in the spring and summer of 1998, liquid oxygen was cycled through the engine. In addition, two engine hot firings were conducted on the ground. It was decided not to do a final hot-fire flight test due to the liquid oxygen leaks in the test apparatus. The ground firings and the airborne cryogenic gas flow tests provided enough information to predict the hot gas effects of an aerospike engine firing during flight.

External links

* Image gallery
** [http://www1.dfrc.nasa.gov/Gallery/Photo/SR-71-LASRE/index.html photographs]
** [http://www1.dfrc.nasa.gov/Gallery/Movie/LASRE/index.html movies]


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Mac Lasre — (12. Sept.), ohne weitere Angabe bei Kelly. S. Maclasrius …   Vollständiges Heiligen-Lexikon

  • Dryden Flight Research Center — Dryden Flight Research Center …   Wikipedia

  • Lasra — Lasra, eine Jungfrau, welche im Mart. Tamlact. vorkommt, woher sie die Bollandisten am 14. Mai (III. 263) unter die Prätermissen aufgenommen haben. Dabei berufen sie sich auf den 11. Mai (II. 611), wo sie aus dem nämlichen Mart. Tamlact. unter… …   Vollständiges Heiligen-Lexikon

  • Dryden Flight Research Center — 34° 57′ 03″ N 117° 53′ 11″ W / 34.950712, 117.886520 …   Wikipédia en Français

  • Maclasrius (2) — 2Maclasrius (Mac Lasre) (16. Mai), Abt zu Benchor, welcher nach Colgan im J. 645 starb. Er blühte zur Zeit des hl. Patritius, und genoß in der Grafschaft Meath (Media) besondere Verehrung. Unter dem Namen Mac Lasre findet er sich zum genannten… …   Vollständiges Heiligen-Lexikon

  • SR-71 Blackbird — infobox Aircraft name = SR 71 Blackbird caption =An SR 71B Trainer over the Sierra Nevada Mountains of California in 1994. Note second cockpit is raised for the instructor. type = Strategic Reconnaissance manufacturer = Lockheed Skunk Works… …   Wikipedia

  • Aerospike engine — The aerospike engine is a type of rocket engine that maintains its aerodynamic efficiency across a wide range of altitudes through the use of an aerospike nozzle. It is a member of the class of altitude compensating nozzle engines. A vehicle with …   Wikipedia

  • List of Nissan engines — Nissan Motors uses a straightforward method of naming their automobile engines. The first few letters identify the engine family. The next digits are the displacement in deciliters. The following letters identify features added and are order… …   Wikipedia

  • Aerospike — Twin Linear Aerospike XRS 2200 …   Deutsch Wikipedia

  • Skunk Works — 34°36′54″N 118°06′45″O / 34.615, 118.1125 …   Wikipédia en Français


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.