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Calculated effect of various types of flap on take-off over obstacles / by J.W. Wetmore.
- Format:
- Book
- Government document
- Author/Creator:
- Wetmore, Joseph W., author.
- Series:
- Technical note (United States. National Advisory Committee for Aeronautics) ; 568.
- Technical note / National Advisory Committee for Aeronautics ; No. 568
- Language:
- English
- Subjects (All):
- Airplanes--Takeoff.
- Airplanes.
- Flaps (Airplanes)--Testing.
- Flaps (Airplanes).
- Lift (Aerodynamics).
- Mathematical analysis.
- Physical Description:
- 1 online resource (15 pages, 9 unnumbered pages) : illustrations.
- Place of Publication:
- Washington, [D.C.] : National Advisory Committee for Aeronautics, 1936.
- Summary:
- In order to determine whether or not flaps could be expected to have any beneficial effect on take-off performance, the distances required to take off and climb to an altitude of 50 feed were calculated for hypothetical airplanes, corresponding to relatively high-speed types and equipped with several types of flaps. The types considered are the Fowler wing, the Hall wing, the split flap, the balanced split flap, the plain flap, and the external-airfoil flap.
- The results indicate that substantial reductions in take-off distance are possible through the use of flaps, provided tha the proper flap angle corresponding to a given set of conditions is used. The best flap angle for taking off varies inversely as power loading and, to a much smaller extent, varies inversely with wing loading. Apparently, the best take-off characteristics are provided by the type of device in which the flap forms an extension to the main wing as in the case of the Fowler wing and the external-airfoil flap.
- Notes:
- Description based on online resource, PDF version; title from title page (viewed April 13, 2020).
- "May 1936."
- "Langley Memorial Aeronautical Laboratory."
- No Federal Depository Library Program (FDLP) item number.
- Includes bibliographical references (page 14).
- Electronic reproduction. Denton, Texas : University of North Texas, 2011. Electronic reproduction from print master produced by University of North Texas.
- Other Format:
- Print version: Wetmore, Joseph W. Calculated effect of various types of flap on take-off over obstacles.
- OCLC:
- 1150919727
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