The problem of maximizing the performance of a fixed-geometry air intake geometry of a vehicle accelerating over a wide range of flight Mach number is addressed. An extension of the Seddon-Goldsmlth procedure is used to estimate the flow pattern involving a curved bowshock, a triple point interaction, and wall shock reflection, which characterizes the subcritical regime of operations. The approximate model has been validated against detailed CFD calculations of the flowfield about the air intake. The approximate model is adopted to find the geometry that optimizes the fuel-to-mass ratio over a constant dynamic pressure trajectory.
Optimal Shape Design of Supersonic, Mixed-Compression, Fixed-Geometry Air Intakes for SSTO Mission Profiles / Creta, Francesco; Valorani, Mauro. - AIAA-2002-4133:(2002), pp. 1-11. (Intervento presentato al convegno 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit tenutosi a Indianapolis; USA).
Optimal Shape Design of Supersonic, Mixed-Compression, Fixed-Geometry Air Intakes for SSTO Mission Profiles
CRETA, Francesco;VALORANI, Mauro
2002
Abstract
The problem of maximizing the performance of a fixed-geometry air intake geometry of a vehicle accelerating over a wide range of flight Mach number is addressed. An extension of the Seddon-Goldsmlth procedure is used to estimate the flow pattern involving a curved bowshock, a triple point interaction, and wall shock reflection, which characterizes the subcritical regime of operations. The approximate model has been validated against detailed CFD calculations of the flowfield about the air intake. The approximate model is adopted to find the geometry that optimizes the fuel-to-mass ratio over a constant dynamic pressure trajectory.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
