Ferranti detector operates on principle of instrument by Specialties Inc, New York, and is interchangeable with it, but incorporates number of modifications; it consists of small cylindrical probe extending through aircraft wing or fuselage skin, and projecting into air stream, facilitates cruising at optimum liftdrag ratio and gives safety indication at takeoff and landing.
Airstream direction detector
Engineering
Engineering ; 176 , n 4576
1953
Article (Journal)
English
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