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NACA Flight-Path Angle and Air-Speed RecorderA new trailing bomb-type instrument for photographically recording the flight-path angle and air speed of aircraft in unaccelerated flight is described. The instrument consists essentially of an inclinometer, air-speed meter and a film-drum case. The inclinometer carries an oil-damped pendulum which records optically the flight-path angle upon a rotating motor-driven film drum. The air-speed meter consists of a taut metal diaphragm of high natural frequency which is acted upon by the pressure difference of a Prandtl type Pitot-static tube. The inclinometer record and air-speed record are made optically on the same sensitive film. Two records taken by this instrument are shown.
Document ID
19930081007
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Coleman, Donald G
Date Acquired
September 6, 2013
Publication Date
April 1, 1926
Report/Patent Number
NACA-TN-233
Accession Number
93R10297
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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