Description
In order to assess the supersonic performance of the C-105 intakes, pressure recovery and drag were measured on a 1/40 scale intake model over a range of mass flows and Mach numbers. Also, the stability of the flow was investigated in an attempt to determine the onset of "buzz" and schlieren photographs of the flow were taken.
Early in the test programme the velocity distribution in the intake ducts was found to be unsatisfactory. The programme, in a somewhat abbreviated form, was carried through nonetheless to determine the orders of magnitude involved and possibly to discover the cause of the poor distribution. The latter was attributed to poor dimensional accuracy of the model; in particular, the matching of the flow surfaces in the ducts downstream of the model intake was not satisfactory.
