This paper describes the development of a novel-type of load cell which possesses certain advantages over the normal pillar type. Sensitivity is greater since the two concentrically nested tubular load-carrying members are ...
The inefficient pressure recovery of present day supersonic wind tunnels, which leads to high costs of plant installation and operation, is discussed and methods of improvement suggested. In particular, the diffuser system, ...
A study is made of the effect of interference fit in loaded holes on the fatigue strength of the associated part. Fatigue-test results are given for aluminium alloy fiat bars with a single hole loaded by a pin in double ...
The problem of the incompressible potential flow past a conventional aerofoil which has an arbitrary distribution of normal velocity
across its surfaoe is solved by the application of conformal transformation to the ...
The net thrust or drag of a power-plant cooling system has been estimated for various flight speeds. The effect of using the exhaust heat inside the duct is considered, and also the effect of burning additional fuel behind ...
THE purpose of this booklet is to provide a key to the spine number of the annual bound volume (Annual Technical Report) in which R. & M. (Reports and Memoranda) can be found. Supplementary information (see Tables 3 to 10) ...
The "liquid film" evaporation method developed by Gray for indicating the position of boundary-layer transition on models in low speed wind tunnels has proved satisfactory in the N.P.L. 20 in. x 8 in. high speed tunnel. ...
Calculations have been made of the induced drag of flapped elliptic wings covering a range of aspect ratios from about 4 to about 12, a range Of flap spans from 0.2 to 1.0 of the wing span, and a range of flap cut-outs ...
A short account and the results of a theoretical investigation (cf. Ref. 1 and 2) of the velocity field induced by a lifting rotor is given. The computation is based on the assumptions that the rotor is lightly loaded and ...