Accession Number : AD0738790

Title :   Zur Auslegung und Bemessung eines Triebwerks mit wahlweise zuschaltbaren Triebwerkskomponeten fuer den Einsatz in Ueberschall-Verkenhrsflugzeugen (Design and Parameters of a Power Plant with Optionally Selective Power Components for Supersonic Airliners),

Corporate Author : DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V BRUNSWICK (WEST GERMANY)

Personal Author(s) : VON Bonin,Lutz

Report Date : 13 AUG 1970

Pagination or Media Count : 12

Abstract : The subject of the study is the proposal for a twin spool power plant with high pressure cut off for operation in supersonic airliners (Mach number 3) which have to pass a larger flight section in the subsonic range reaching beyond the climb and acceleration phase with regard to the supersonic boom. This proposal is based on constructing an engine for the two extremely differing flight conditions - supersonic flight with Mach number 3 in an altitude of 20 km and subsonic flight with Mach number 0.9 in an altitude of 11 km - that is optimally designed and sized for both flight phases. After a brief discussion of the structure and method of operation of such an engine, the system of equations for the determination of the payload related to the starting weight is developed with some simplifying assumptions in order to be able to investigate the effect of such an engine concept on the profitability of the aircraft within a first onset.

Descriptors :   (*AIRCRAFT ENGINES, EXPERIMENTAL DESIGN), SUPERSONIC AIRCRAFT, SUBSONIC CHARACTERISTICS, HIGH ALTITUDE, SUPERSONIC CHARACTERISTICS, MATHEMATICAL MODELS, PAYLOAD, FEASIBILITY STUDIES

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE