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RESEARCH PAPERS: Gas Turbines: Aircraft

Technology Demonstration Nozzle for Mach 7 Turboramjets

[+] Author and Article Information
K. Pirker, U. Knott

MTU Motoren- und Turbinen-Union, Munich, Federal Republic of Germany

J. Eng. Gas Turbines Power 117(3), 401-405 (Jul 01, 1995) (5 pages) doi:10.1115/1.2814109 History: Received March 09, 1994; Online November 19, 2007

Abstract

Under the German Hypersonic Technology Program, future-oriented designs and technologies for reusable space vehicles, such as SÄNGER, are being developed. Pioneering the way in a new field of technology, MTU constructed and tested, with success from the very beginning, an actively cooled, asymmetric rectangular nozzle (SERN—single expansion ramp nozzle) of advanced design, characterized by the following innovative features: • rectangular, flap-controlled variable flow cross section; • liquid-hydrogen-cooled structures; • high-temperature-resistant sealing system for variable nozzle flaps; and • uncooled expansion ramp in carbon/carbon composite with anti-oxidation coating. Development of the nozzle called for the mastery of new manufacturing techniques; proof of concept was provided in the successful performance of initial tests of 300 second duration.

Copyright © 1995 by The American Society of Mechanical Engineers
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