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Wing Flaps and Other Devices as Aids to Landing

  • R. P. Alston
Extract

It has long been recognised that landing and taking—off are the most hazardous periods of the average flight. In this respect an aeroplane is similar to a boat being launched or beached at high speed; the change from one medium of support to another is bound to involve possible damage especially if speeds are high.

So far as risk of mechanical damage, due to uneven aerodrome surface (or swell in the case of a seaplane), is concerned, the speed of landing should be the minimum practicable. Very low landing speeds have a possible disadvantage in that one may not have sufficient aerodynamic control to compete with gusts, etc., but there are few aeroplanes of to-day which have landing speeds so low that this objection can be raised.

The trend of design in recent years has been to increase aerodynamic efficiency by streamlining and to increase the wing loading.

Copyright
References
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1.The Landing of Aeroplanes. R. & M. 1598. By R. P. Alston, L. W. Bryant and I. M. W. Jones.
2.The Use of Split Flaps and Other Devices to Facilitate Landing. R. & M. By S. B. Gates. (To be published shortly.)
3.Aeroplane, Sept. 19th,1934.
4.Control Beyond the Stall. Jour. R.Ae.S., April,1934.By G. V. Lachmann.
5.The Mattioli Diruttore. Aeroplane, Aug. 29th, 1934.
6. Model Experiments with Variable Camber Wings. R. & M. 677. By R. G. Harris and F. B. Bradfield.
7.A Simple Method of Increasing the Lift of a Wing. Z.F.M.,1932, p. 597. By E. Gruschwitz and O. Schrenk.
8.Zap Flaps and Ailerons.“Flight,” July 27th and Aug. 31st,1933.By Temple N. Joyce.
9.Wind Tunnel Tests of the Fowler Variable—Area Wing. N.A.C.A. Note 419. By F. E. Weick and R. C. Piatt.
10.The Aerodynamic Characteristics of a Model Wing having a Split Flap Deflected Downward and Moved to the Rear. N.A.C.A. Note 422. By F. E. Weick and T. A. Harris.
11.The Effect of Partial—Span Split Flaps on the Aerodynamic Characteristics of a Clark Y Wing. N.A.C.A. Note 472. By C. J. Wenzinger.
12.The Effect of Full—Span and Partial—Span Split Flaps on the Aerodynamic Characteristics of a Tapered Wing. N.A.C.A. Note 505. By C. J. Wenzinger.
13.Wind Tunnel Measurements of Air Loads on Split Flaps. N.A.C.A. Note 498. By C. J. Wenzinger.
14.The Effect of Multiple Fixed Slots and a Trailing—Edge Flap on the Lift and Drag of a Clark Y Airfoil. N.A.C.A. Report 427. By F. E. Weick and J. A. Shortal.
15.The D.V.L. Gliding Angle Control. By W. Hiibner and W. Pleines. Z.F.M., Aug. 12th, 1932.
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The Aeronautical Journal
  • ISSN: 0001-9240
  • EISSN: 2059-6464
  • URL: /core/journals/aeronautical-journal
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