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Browsing Aeronautical Research Committee Reports & Memoranda by Title

Now showing items 1-20 of 71

Abstracts of papers published externally

Unknown author (H. M. Stationery Office, 1939)

CONTENTS. The Continuous Beam. The Large Deflections of a Thin Circular Ring. Theoretical Discharge of Air from Ports in a Duct. The Estimation of Pipe Delivery from Pitot-Tube Measurements. The Influence of Wall Oscillations, ...
Account of some experiments on rigid airship r.26

Pannell, J. R.; R. A. Frazer (H. M. Stationery Office, 1920)

The Report gives experimental results obtained on four flights on R.26 during the period November, 1918-January, 1919. The following earlier Reports are quoted in the text :- R. & M. 668 (Airship R.33) ; R. & M. 537 and ...
Aerodynamic forces on wings in simple harmonic motion

W. Prichard Jones (H. M. Stationery Office, 1945)

A theory for the calculation of the aerodynamic forces acting on wings of finite span and any plan form is developed, and from it an approximate method which reduces the amount of numerical work is derived. Satisfactory ...
Aerodynamic properties of a hemispherical cup with application to the hemispherical cup, windmill and anemometer

F. B. Bradfield (H. M. Stationery Office, 1919)

Windmills of the hemispherical cup anemometer type have been used on aeroplanes for driving auxiliary apparatus, and it therefore appeared desirable to be able to calculate their performance. To do this it was necessary ...
The application of Goldstein's theory to the practical design of airscrews

Lock, C. N. H. (H. M. Stationery Office, 1930)

A recent paper on the Vortex theory of screw propellers, by Dr. S. Goldstein in the Proceedings of the Royal Society, contains a solution of the problem of the potential flow past a body consisting of a finite number of ...
Application of thin aerofoil theory to the design of double flap controls of small chord

H. H. B. M. Thomas; M. Lofts (H. M. Stationery Office, 1944)

Recent experimental investigations on small-chord controls in two-dimensional flow suggest that such controls are more efficient than wide-chord controls. The experiments also suggest that a further gain is obtained if the ...
Blockage corrections in a closed rectangular tunnel

A. D. Young; H. B. Squire (H. M. Stationery Office, 1945)

PART I. Simple, Approximate Formulae for General Application. PART II. Note on the Blockage Correction for Streamline Bodies of Revolution
The boundary layer of the front portion of a cylinder

Thom, A. (H. M. Stationery Office, 1928)

A large amount of information is now available regarding the flow of water or air past a cylinder placed across the stream so far as the behaviour of the main body of the fluid is concerned; but the conditions in the layer ...
The buckling of a long curved panel under axial compression

D. M. A. Leggett (H. M. Stationery Office, 1942)

In modern aeroplane design a detailed knowledge of the behaviour of thin panels is very necessary. The problem of flat panels may be regarded as largely solved. This is not true, however, of curved panels and the object ...
The buckling of a square panel under shear when one pair of opposite edges is clamped, and the other pair is simply supported

D. M. A. Leggett (H. M. Stationery Office, 1941)

For an efficient design of spar with thin sheet web it is important to know the load which will just cause the web to buckle. As stiffeners divide the web into panels, it is required to find the buckling stress of rectangular ...
The calculation of aerodynamic loading on surfaces of any shape

Falkner, V. M. (H. M. Stationery Office, 1943)

The object of the report is to establish a routine method for the calculation of aerodynamic loads on wings of arbitrary shape.
The calculation of the profile drag of aerofoils

H. B. Squire; A. D. Young (H. M. Stationery Office, 1937)

Owing to improvements in aerodynamic design it is desirable to be able to predict profile drag accurately. A method of calculating the profile drag of aerofoils is developed and is applied to investigate the drag of a flat ...
The calculation of the total and skin friction drags of bodies of revolution at zero incidence

A. D. Young (H. M. Stationery Office, 1939)

By a modification of the method used to calculate the profile drag of aerofoils a method has been developed for calculating the drag of smooth bodies of revolution. This method has been applied to three bodies at zero ...
Cooling of aircraft engines with special reference to ethylene glycol radiators enclosed in ducts

Meredith, F. W. (H. M. Stationery Office, 1935)

The recent increase in the speed of aeroplanes has brought the question of cooling drag into prominence and forced the application of the principle of low velocity cooling. An analysis of the performance of a cooling system ...
Derivative measurements and flutter tests on a model tapered wing

W. P. Jones; N. C. Lambourne (H. M. Stationery Office, 1941)

The influence of various parameters, such as wing density and flexural stiffness on the critical speed of a tapered wing was investigated theoretically in R. & M. 1782 using certain fundamental aerodynamic derivative ...
Design and development of a torsiograph having a serrated-condenser pick-up unit

B. C. Carter; J. R. Forshaw (H. M. Stationery Office, 1942)

The instrument that forms the subject for this report has a condenser pick-up unit to which a carrier wave is applied : it measures, directly, instantaneous angular displacements due to shaft twist. The pick-up originated ...
The design of wind tunnel fans.

Collar, A. R. (H. M. Stationary Office, 1940-08-10)

Summary.—The present report is one of a series dealing with N.P.L. methods for the design of return flow wind tunnels. Reports already issued deal with the design of the Compressed Air Tunnel¹ and Open Jet Tunnels,² with ...
The difference between the spinning of model and full-scale aircraft

G. E. Pringle (H. M. Stationery Office, 1943)

It was required to review the technique of model spinning tests with the object of improving the reliability of model standards as applied to full scale.
The drag of circular cylinders and spheres at high values of reynolds number

Fage, A. (H. M. Stationery Office, 1930)

The paper gives the results of experiments made recently to measure the drag of a circular cylinder of large diameter (23 in.). The more important measurements made in this country and abroad of the drags of circular ...
The effect of blade twist on the characteristics of the c.30 autogiro

J. A. Beavan; Lock, C. N. H. (H. M. Stationery Office, 1936)

An analysis of the blade motion and force characteristics of the standard Cierva C.30 autogiro rotor is made, taking into account the torsional flexibility of the blades. The results are applied to the steady motion and ...

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