This note offers explanations for certain types of flow instability which occur with centre-body diffusers at supersonic speeds. These instabilities manifest themselves as oscillations of the shock pattern ahead of the ...
Part I. In this Report numerical methods used to solve the Navier-Stokes equations for steady viscous two-dimensional flow are extended to include the case of axial symmetry. The equations and their finite difference ...
Part I of the report gives an account of experiments made with the National Physical Laboratory smoke generator to obtain smoke patterns in the wake of an aerofoil performing a rolling oscillation in a wind stream. ...
Summary. The nature of normal-shock and turbulent-boundary-layer interaction is described on the basis of an experiment involving two-dimensional flow, at M = 1.47, over a flat plate. Special attention is paid to the flow ...
Flight tests have been made on a Hoverfly I helicopter to investigate the types of flow associated with various rates of vertical descent. At the same time measurements of the performance were made. The results are analysed ...
In this note, the equations of the flexural-torsional flutter of a swept wing are established, assuming the wing to be semi-rigid and fixed at the root. The general effects of sweep-back, wing stiffness and position of the ...
Resonance tests on a model cantilever wing carrying concentrated masses were made in conjunction with the flutter tests of R. & M. 2533. Measurements were made with masses up to approximately five times the mass of the ...
This report describes work which has been done to investigate the possibility that the flexure-torsion flutter speed of a wing may be less at high incidences than at low incidences, and that this decrease may be due primarily ...
Calculations have been made to investigate the effects on wing flutter of flexibility between a wing and an added mass. Flexibilities in pitch, roll, and yaw have been separately investigated for a mass carried at the tip ...