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THE Aircraft Industry is enjoying a period of activity such as it has not known for eighteen years. This is, we believe, true not only in England, but in every country of the world. Temporarily, at any rate, all the leading Powers have decided no longer to put their trust in pacts and treaties,...
A study of the world altitude records for heavierthanair aircraft homologated by the Fdration Aronautique Internationale is interesting, and yields the information that from 1909 to 1914 the mean rate of increase of ceiling was almost 4,500 ft. per year, while from 1920 to 1936 the mean rate...
WHEN a thinwalled hollow cylinder is subjected to torsion, it is generally assumed that, if the length is great compared with the linear dimensions of the section, direct stressesin the direction of the axis of the cylinderare absent, and that the shear stress is everywhere proportional to the...
THE general arrangement of the wind tunnel shown in Figs. 1 and 3 does not differ materially from the tunnels built up to the present on the plans of Professor Prandtl in Germany, England, America. It is an open jet tunnel with single return flow and two large elliptic nozzles of different...
The rapid growth of aeronautics in the past nine years has caused Professor Warner to divide the second edition of his treatise on aeroplane design into two volumes, of which this is the first. The laconic subtitle Performance docs not suggest how wide is the field covered. All branches of the...
IN Figure 1 is shown an example of a purely electrical dynamometer, which uses two electrical carcases in tandem its range of power and speed being suitable for dealing with mediumsized aeroengines and the more powerful automobile and lorry engines. Its speed range is from 500 to 3000 r.p.m. and...
Some Typical Installations Suitable for AeroEngine Testing
A PASSENGER or freightcarrying aeroplane without wireless will come to be regarded in much the same light as a ship without steering gear, and that time is probably not far distant. Wireless is today accepted as being equally essential in air and marine navigation.
Failures having occurred on Monospar S.T.25 engine mounting members, at a point approximately 2 in. from the engine attachment of the upper tubular member between the welded gusset plates, it has been decided that a modification to the engine mounting is essential.
The following list of contracts placed by the Air Ministry during September is extracted from the October issue of The Ministry of Labour Gazette
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