A criterion is given for the convergence of numerical solutions of the Navier-Stokes equations in two dimensions under steady conditions. The criterion applies to all cases, of steady viscous flow in two dimensions and ...

This note gives the result of an attempt to find an analytical solution of Possio's integral equation - the equation which connects the downwash and the pressure distribution on an aerofoil oscillating in two-dimensional ...

The requirements for simulating in a Wind tunnel flutter conditions appropriate to high-speed flight are discussed, and an assessment is made of the desirable features of a wind tunnel suitable for flutter testing at ...

Summary.--The lift, pitching moment and hinge moment are derived for a delta wing with a trailing-edge flap of constant chord when tile wing is at zero incidence in a supersonic air stream and tile flap oscillates harmonically ...

Exact theories are used to examine tile validity of certain methods of wing stressing when they are applied to thin wings of low aspect ratio. Attention is confined to thetwo spar multi-rib wing having rectangular cross-section ...

A general method (requiring the aid of a digital computer) is described for deriving the influence coefficients of any type of wing, and hence for evaluating its strength and stiffness characteristics. The method allows ...

A method is developed for determining the loading on low-aspect-ratio wings. By allowing for down stream effects on the flow at a station on the wing and for the trailing-edge condition, the method improves on R. T. Jones's ...

Interest has recently been revived in an apparatus which was first developed fifty years ago. This apparatus, which is known today as a shock tube, consists of a simple duct which may be closed or open at one end, and ...

The number of available exact solutions of the full equations of motion of an incompressible viscous fluid is remarkably few. Those that exist are mostly limited to steady flows. Where a steady state solution does exist, ...

Experiments are described which show the effects of bearing length, bearing clearance, and lubricant viscosity on the critical whirling speeds of a single-shaft rotor system supported in plain bearings. The critical speed ...