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Air flow investigation for location of angle of attack head on a JN4h airplane / by R.G. Freeman.
- Format:
- Book
- Government document
- Author/Creator:
- Freeman, R. G., author.
- Series:
- Technical note (United States. National Advisory Committee for Aeronautics) ; no. 222.
- Technical notes / National Advisory Committee for Aeronautics ; No. 222
- Language:
- English
- Subjects (All):
- Airplanes--Testing.
- Airplanes.
- Air flow--Measurement.
- Air flow.
- Angle of attack (Aerodynamics)--Measurement.
- Angle of attack (Aerodynamics).
- Physical Description:
- 1 online resource (13 pages, 8 unnumbered pages) : illustrations
- Place of Publication:
- [Washington D.C.] : National Advisory Committee for Aeronautics, 1925.
- Summary:
- The technical staff of the National Advisory Committee for Aeronautics at Langley Field, has made a series of free flight tests with a JN4h airplane in order to find the best places for an instrument for measuring the angle of attack.
- A "neutral zone" was found where the air remains either at rest relative to the undisturbed air beyond the influence of the airplane, or is set in motion parallel to the motion of the airplane. This zone is about midway between the two wings and slightly in front of, or at the vertical plane through the leading edges of the wings but the exact position as well as the outlines of the zone varies considerably as the conditions of flight change.
- However, there is a restricted area at the section under investigation where air remains, within limits, parallel to the direction of flight throughout the entire flying range. Such a permanently neutral zone has been observed both in level flight and in one condition of climb, and the numbe of observations warrants the statement that such a neutral zone exists under all conditions of steady flight.
- Notes:
- Title from title screen (viewed June 11, 2019).
- "Langley Memorial Aeronautical Laboratory."
- "August 1925."
- No Federal Depository Library Program (FDLP) item number.
- Includes bibliographical references (page 13).
- Print version record.
- Other Format:
- Print version: Freeman, R.G. Air flow investigation for location of angle of attack head on a JN4h airplane
- OCLC:
- 1104210378
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