Results 181 to 190 of about 2,233 (228)

SIMILARITY AND SCALE EFFECT IN RAMJET COMBUSTORS

Symposium (International) on Combustion, 1963
In view of the successful application of “pressure scaling” to gas turbine and reheat combustors, there is interest in using the technique for ramjets. However, as the fuel distribution process in typical ramjet combustors was suspected of causing scaling difficulties, the present work set out to determine the value of pressure scaling under these ...
D.G. Stewart, G.C. Quigg
openaire   +1 more source

Unsteady gas dynamic processes in Ramjets

Fluid Dynamics, 1993
The characteristics of the gas dynamic wave process taking place in a ramjet duct when the combustion chamber is started up or the fuel supply regime is switched have been investigated.
Egorushkin, S. A., Slobodkina, F. A.
openaire   +1 more source

Ramjet Engine Testing and Simulation Techniques

Journal of Spacecraft and Rockets, 1978
Simulation of flow conditions within the operating regime of ramjet engines requires unique ground test capabilities. The blowdown facility is an economical method of meeting the high air mass flow and pressure ratio requirements. Vitiated air heaters provide a flexible and cost-effective method of simulating trajectory temperature variation.
L. DUNSWORTH, G. REED
openaire   +1 more source

Ramjet Engines Performance

2021
Ramjet performance is calculated by means of the well-acknowledged Bryton cycle. The real Bryton cycle accounting for friction losses, pressure recovery, combustion efficiency and the thermal chocking, has been analyzed to establish the greatest operative conditions for the ramjet engine.
openaire   +2 more sources

Unified Analysis of Internal Flowfield in an Integrated Rocket Ramjet Engine. II: Ramjet Sustainer

Journal of Aerospace Engineering, 2014
AbstractThe flow and combustion dynamics in the ramjet sustainer of an integrated rocket-ramjet (IRR) engine are investigated systematically. The physical model includes the entire engine flowpath, from the freestream in front of the inlet to the exit of the exhaust nozzle.
Hong-Gye Sung, Vigor Yang
openaire   +1 more source

Ramjets: Airframe integration [PDF]

, 2010
These notes deal with the integration of a (sc)ramjet 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.
Moerel, J.L., Halswijk, W.
openaire  

Exergy analysis of ramjet

Thermophysics and Aeromechanics, 2009
An exergy analysis of possible regimes of energy supply to the air flow in the ramjet duct is carried out. A condition for the supply of a given heat amount to supersonic flow and a condition of the passage across the sound velocity are obtained for a duct with variable cross-sectional area.
openaire   +1 more source

British Rocket and Ramjet Engines

Aircraft Engineering and Aerospace Technology, 1958
ROCKET and ramjet engines have not the universal application that gas turbines command and possibly on this account they have not had, until recent years, the development effort which gave such amazing results in turbine powered aircraft. Nevertheless, they have demonstrated quite dramatically in various parts of the world that they are power plants to
A.D. Baxter, S.W. Greenwood
openaire   +1 more source

DETONATION STRUCTURES IN A SUPERSONIC ANNULAR RAMJET CHAMBER

Detonation: Latest accomplishments, 2020
The results of a systematic study of the structures and flow regimes with an oblique detonation wave (ODW) in an annular ramjet straight-flow detonation chamber (DC) of a new type have been presented. In the combustor with a new design, detonation burning of the reacting mixture is organized by using a compression body shaped as a continuous monofilar ...
openaire   +1 more source

Supersonic combustion ramjet missile

Journal of Propulsion and Power, 1995
During the period of 1962-1978, the Applied Physics Laboratory of Johns Hopkins University developed the technology for a family of missiles named SCRAM for use as fleet defense weapons. SCRAM is the acronym for supersonic combustion ramjet missile. The development work began with the conceptual design of two missile configurations and calculations of ...
openaire   +1 more source