Aeronautical Research Council (1945-1979)
https://reports.aerade.cranfield.ac.uk/handle/1826.2/4
2024-02-18T12:59:37ZNote on Wind-Tunnel Measurements of Yawing Moment, Rudder Fixed and Free, on Models of Three Aircraft
https://reports.aerade.cranfield.ac.uk/handle/1826.2/4871
Note on Wind-Tunnel Measurements of Yawing Moment, Rudder Fixed and Free, on Models of Three Aircraft
Adamson, J E; Brown, E C; Allen, R H
1941-07-01T00:00:00ZStrip theory method of calculation for airscrews on high-speed aeroplanes
https://reports.aerade.cranfield.ac.uk/handle/1826.2/4112
Strip theory method of calculation for airscrews on high-speed aeroplanes
Lock, C. N. H.; Pankhurst, R. C.
The report describes a simplified 8-point strip theory method of calculating the free-air performance of a propeller up to tip Mach numbers near the velocity of sound. It is based on the assumptions of R. & M. 1674 and 1849 together with the further simplifying assumption that the curve is straight (valid below the stall) and that the curve also is straight (valid for J > 1.0). The report includes tables of parameters which are required in the calculations as functions of J, r, and N for eight standard radii (r, = 0.3, 0.45, 0.6, 0.7, 0.8, 0.9, 0.95, 0.975) for the range of values of J from 1.0 t o 7.0; these are of universal application. In addition, tables of section data for various section shapes are required; these are given for Clark Y sections over a range of thickness in R. & M. 2036; they were derived, by methods described in R. & M. 2020, from overall measurements of thrust and torque on full scale propellers at low values of J in the Royal Aircraft Establishment 24-ft. tunnel and are subject to revision in the light of subsequent experimental research.
1945-10-01T00:00:00ZSome numerical methods for obtaining harmonic and subharmonic solutions of Duffing's equation
https://reports.aerade.cranfield.ac.uk/handle/1826.2/4094
Some numerical methods for obtaining harmonic and subharmonic solutions of Duffing's equation
M. Newby
Harmonic and subharmonic solutions are determined numerically for the forced oscillations of a system governed by Duffing's equation, and the stability of these oscillations is discussed.
1965-01-01T00:00:00ZExploratory investigation of the effects of blowing from the leading edge of a delta wing
https://reports.aerade.cranfield.ac.uk/handle/1826.2/4095
Exploratory investigation of the effects of blowing from the leading edge of a delta wing
W. J. G. Trebble
Low-speed wind-tunnel tests were made to investigate the possibility of increasing the lift of a highly swept wing by ejecting high energy air from the leading edge. The results showed that lift gains were available, but that care should be taken to direct the emergent jet with the minimum possible forward component so that large drag penalties may be avoided.
1966-01-01T00:00:00Z