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IT is ironically true that with all our progress the calculation and estimation of the resistance of a streamline body is still not a matter of precision. And yet the streamline body is the foundation around which all aircraft design is built. It is true that the true body, of complete circular...
THE drag of a streamline body, such as an airship hull or an aeroplane fuselage, with its axis in the direction of the relative wind, is almost entirely due to skin friction. The drag component clue to surface pressure is, in general, small and relatively unimportant. Unfortunately, in the range...
THE General Aircraft Company's S.T.10 monoplane was the winner of this year's King's Cup Race. Fitted with two Pobjoy Niagara radial engines which develop 90 h.p. at 3,500 r.p.h. for a weight of 145 lb. it maintained an average speed in the final round of 1316 m.p.h. piloted by Flt.Lt. Schofield.
THE main planes of the fourengined D.H.86, Diana, have an aspect ratio of 123 with an exceptionally heavy taper in chord to the tips. The aerofoil section used is a modified R.A.F. 34. Both planes are swept back 4 ft. 9 in. and are set at a dihedral angle of 3 deg. The gap is 6 ft. 48 in., and...
THE Avro Commodore is a fouroccasional five scater biplane fitted with the ArmstrongSiddeley Lynx 215 h.p. engine.
THE Avro 642 has been designed as both a twinengined and fourengined model.
AMONG the now types which aroused most interest at the S.B.A.C. Display at Hcndon on July 2, was the Airspeed Envoy, officially known as the A.S.6. This is a twinengined monoplane with, an added point of interest, the first two production Wolseley A.R.9 200h.p. radial engines. This engine was...
A CONSIDERABLE literature about skin friction or boundarylayer theory exists both in English and in German and there is general agreement as to the best practicable method of dealing with a change from model to full scale. In the resume now to be given no new ideas or facts are introduced.
THE main desiderata to ensure a satisfactory design of main planes from the case of repair viewpoint are
IT is perhaps not surprising, in view of the remarkable advancements which have been made in Aerodynamic Theory during the last two decades, that the literature on this subject is now very extensive. In early days, Lamb's mathematical treatise, Hydrodynamics, and Lanchester's classical works,...
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