Accession Number : AD0714638
Title : Flight Evaluation AN/APN 191 Radar Altimeter.
Descriptive Note : Final rept. Feb 68-Jul 70,
Corporate Author : ARMY AVIATION SYSTEMS TEST ACTIVITY EDWARDS AFB CALIF
Personal Author(s) : Bender,Gary L. ; Burden,John R.
Report Date : SEP 1970
Pagination or Media Count : 29
Abstract : A flight evaluation of the AN/APN 191 radar altimeter was conducted to determine its accuracy and suitability as a test instrument. The testing consisted of 9.7 flight hours with the altimeter system installed in a UH-1C helicopter. Results show that the AN/APN 191 altimeter system has a large random error and is not as accurate as present altitude determination methods. Therefore, this altimeter is unsatisfactory as a test instrument. The indicator scale and sensitivity were excellent; and the accuracy was not affected by attitude, vertical speed, or airspeed variations. (Author)
Descriptors : (*RADIO ALTIMETERS, FLIGHT TESTING), RELIABILITY(ELECTRONICS), PERFORMANCE(ENGINEERING), ACCURACY, RADAR EQUIPMENT
Subject Categories : Flight Control and Instrumentation
Distribution Statement : APPROVED FOR PUBLIC RELEASE