Ramjets: Airframe Integration
TNO DEFENCE SECURITY AND SAFETY RIJSWIJK (NETHERLANDS)
Pagination or Media Count:
These notes deal with the integration of a scramjet engine in either an axisymmetric or a waverider type of cruise missile configuration. The integration aspects relate to the integration of the external and internal flow paths in geometrical configurations that are being considered worldwide. Integration of these two flow paths combined with the vehicle concept that flies an equilibrium cruise flight lift weight and thrust drag has led to an evaluation tool, HyTEC Hypersonic Technology Evaluation Code that estimates the system performance parameter cruise flight range as function of design options vehicle concept axisymmetric or waverider and scale, ramjet or scramjet propulsion and mission options e.g. flight speed, flight altitude. First-order engineering relations for the aerodynamic and propulsive forces in the supersonic and hypersonic flight regime constitute the basis of this tool. The notes are structured as follows after the introduction the evaluation tool HyTEC and typical analysis results are discussed. Next the results of a case study are given and finally the notes deal with some first steps to improve HyTEC. Most of the contents of these notes are more extensively described in references 1, 2 and 3.
- Jet and Gas Turbine Engines