Thus, the fluid mechanics equations are solved[compressible Navier-Stokes ] for a Mach number * of 0.2 [ around 250 km/h ] under conditions equivalent to those of a wind tunnel experiment.... Mach Number...
Onera participated to the EREA-Airbus pilot-project CISAP, in collaboration with DLR, NLR and QinetiQ. CISAP, acronym of " Cruise speed Impact on Supersonic Aircraft wing Planform " is a project intended to study how the optimum wing shape of a High-Speed Civil Transport (HSCT) aircraft evolves with the cruise Mach number....
An aircraft flying at supersonic speed (Mach number above 1.0) generates in its vicinity a flow field characterised by marked swept shock wave resulting in very strong pressures gradients....
During the cruise phase of flight, the flow around the fuselage and wings is transonic, i.e. there are areas where the Mach number is higher than 1 and others where it is lower....
