Accession Number:

ADP007941

Title:

Trajectory Optimization Considerations for Ramjet Engines,

Descriptive Note:

Corporate Author:

DEUTSCHE GESELLSCHAFT FUER LUFT- UND RAUMFAHRT E V COLOGNE (GERMANY F R)

Personal Author(s):

• Kremer, Frans G. J.

Report Date:

1990-12-01

Pagination or Media Count:

23.0

Abstract:

For supersonic and hypersonic flight conditions with ramjets, trajectory calculations have necessarily to be coupled with the engine performances. In space transportation systems ramjets will be employed in a relatively wide range of Mach-numbers. and therefore not always near the optimum design point. Optimization of several physical parameters along the trajectory will be inevitable. This paper discusses some of these parameters and their importance for an ascent trajectory, having a minimum fuel requirement.

Descriptors:

• *HYPERSONIC FLIGHT
• *SUPERSONIC FLIGHT
• *RAMJET ENGINES
• ASCENT TRAJECTORIES
• ENGINES
• FLIGHT
• FUELS
• OPTIMIZATION
• PAPER
• PARAMETERS
• REQUIREMENTS
• SPACE TRANSPORTATION
• TRAJECTORIES
• TRANSPORTATION

Subject Categories:

• Research and Experimental Aircraft
• Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE