Accession Number : AD0908597

Title :   Low Cost Ramjet.

Descriptive Note : Final rept. Nov 71-Sep 72,

Corporate Author : MARQUARDT CO VAN NUYS CA

Personal Author(s) : Long, H. Clyde ; Carlson, Charles H.

Report Date : NOV 1972

Pagination or Media Count : 316

Abstract : This program was addressed to developing a ramjet engine which could be used for propulsion in the subsonic and low supersonic flight regions that can be produced at low cost when compared to other state-of-the-art propulsion devices. A full size, 15 in. diameter pitot inlet ramjet was designed, fabricated and ground tested with the envelope from Mach .7 to .9, sea level to 20,000 ft and at Mach 2.0. The engine was converted to a supersonic engine by replacing the pitot inlet with a 50 deg conical inlet with a Mach 2.0 design. All testing was conducted free jet, using a thrust stand. Final results of the experimental program, using both performance calculated from internal pressure data and direct thrust readings, indicate that the engine performed as predicted in the regions of interest. Control system analyses have defined fuel controls compatible with trajectories of interest and in line with low cost objectives.

Descriptors :   (*RAMJET ENGINES, COSTS), SUBSONIC CHARACTERISTICS, SUPERSONIC CHARACTERISTICS, PERFORMANCE(ENGINEERING), PRODUCTION, FUEL SYSTEMS, COMBUSTION, HEAT TRANSFER, MANUFACTURING, TARGET DRONES, DECOYS, PRODUCTION, IGNITION, SUPERSONIC FLIGHT.

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE