Under review

This report catalogues aerofoils which have been designed (or substantially modified) at the N.P.L., and which have been the subject of theoretical investigations, aircraft design studies or wind-tunnel tests. A full ...

Resonance tests on a model delta wing are described. Consideration is given to the effect of inertia distribution on the first three normal symmetric modes of vibration. The mean centre of gravity position, fuselage pitching ...

A new law of similarity is given, valid for slender profiles in mixed transonic flow with negligible viscosity, according to which the cube of the Prandtl factor of any critical Mach number is proportional to the thickness ...

A new method for the numerical soiution of the boundary-layer equations is described. This rests in essence on the fact that the equations of steady flow are special cases of the equations of general motion. The velocity ...

The probe decelerates a portion of the supersonic free stream into the subsonic range within a distributed compression fan. Stagnation pressure is sampled in the region of subsonic flow using a pitot tube. Pressure recovery ...

Summary. A series of low drag aerofoils, modelled roughly on the NACA 6-series, is described. It appears to offer theoretical advantages over its progenitor, and allows flexibility in the choice of leading-edge thickness ...

A new closed loop system is described which enables the incidence, roll and motivator (i.e. control surface) angles of a wind tunnel model to be controlled remotely, either by hand or by analogue voltages derived from, ...