Accession Number:
AD0272777
Title:
FLIGHT TEST EVALUATION OF FLUSH MOUNTED LUNEBERG LENS ANTENNA FOR PWI/CAS SYSTEM
Descriptive Note:
Corporate Author:
SPERRY GYROSCOPE CO GREAT NECK N Y
Personal Author(s):
Report Date:
1961-12-01
Pagination or Media Count:
1.0
Abstract:
The operation of the Pilot Warning InstrumentCollision Avoidance System PWICAS is based on a unique dual antenna. This unit consists of a directional scanning antenna Luneberg lens and an omnidirectional antenna combined in a flush mounted assembly. Two modified APN-121 dual antennas were flight tested to determine the adequacy and suitability of this type of antenna for the PWICAS system. Two FAA aircraft of the JC-131 type were fitted with the modified antennas. A compatible X-band interrogator APW-18 and a transponder APQ-16 were used to provide signal sources and signal detectors. The communication coverage volume provided by the two antennas was determined by flying the aircraft towards each other in a series of non-collision and collision courses. The results of the flight test program demonstrate that the dual antenna is both adequate and suitable for the PWICAS. Author