Accessible information about the performance of existing wind tunnels is far from being adequate. Once a tunnel is constructed the subject too often becomes a matter of low priority or else such information as is obtained ...
In general, conventional compressor stages are designed by the cascade method, while high stagger low solidity ducted fans are designed on modified isolated aerofoil theory. The purpose of these notes is to provide a basis ...
Calculations have been made of the changes in rotor speed following engine failure on a typical helicopter in hovering flight. Various time functions for the collective pitch operation are considered. The results are in ...
Linear differential equations whose coefficients are functions of the independent variable are now assuming importance in aeronautics in the discussion of the motion following a small disturbance in a specified accelerated ...
The downwash induced by planar vorticity distributions has been computed by exact linear theory and by the R.A.E. Standard Method to examine the accuracy of the approximate method. The results on wings of infinite span ...
This report briefly describes salient results obtained during commissioning Or the stagnation pressure control system of the N.P.L. 15 in x 10 in (38.1 cm x 25.4 cm) blowdown wind tunnel. The very different problems of low ...
The design of two-dimensional converging channels is considered, with special reference to (i) the lengths of the channels and (ii) the occurrence or absence of unfavourable velocity gradients at the walls. It is shown ...
A collection of records showing the time histories of strains and accelerations at various parts of a Lancaster flying in turbulent air is presented and discussed. The records include specimens taken in cloud at moderate ...
An expression has been derived for the factor to he applied to ideal induced drag to allow for Wing-tail interference. This factor is primarily dependant on the wing-taillift and span ratios. It is of the order of 1.1 for ...
The existing data have been analysed and a method has been derived for predicting the lift and profile-drag increments of split and slotted flaps. It is suggested that the probable order of error involved in the method is ...
A summary of the first ten flights made with a heat-transfer vehicle is given together with some of the salient features of the results relative to conical and hemispherical heads. The method of reducing the temperature ...
The tail-first aeroplane has certain strong attractions when combined with a tricycle undercarriage; in particular it has been suggested that it would represent a definite advance in the production of high lift. In these ...