ANALYSIS AND DEVELOPMENT OF FEASIBILITY RFI ANTENNA SYSTEM FOR CONVAIR C-131 TURBOPROP AIRCRAFT AND KC-135 JET AIRCRAFT.
Abstract
Analysis and development of an RFI Antenna System was undertaken for use on the Convair C-131 turboprop and KC-135 jet aircrafts. The automatic direction finding system will locate sources of interference to FAA air navigation aids in the VOR-VHF Communications, Glide Slope, and Tacan frequency bands. Two antennas are used to cover the required frequency spectrum. Both antennas employ a characteristic null type radiation pattern for accurate RFI acquisition. The system provides the capability of fixing a target without the need of aircraft heading change, and performs within the electrical and mechanical specifications originally established as design goals. Concurrent with this design effort was a scale model study of these aircraft to justify antenna mounting locations. Tests indicated no adverse effects from aperture blockage or scattering from the airframe for the chosen locations. A scale model DC-3 aircraft was also tested for antenna adaption, but the posed limitation of available mounting locations resulted in questionable system reliability where 360 degrees spatial coverage is a requirement. However, the array used as a fixed forward looking installation for homing has a decided advantage.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1966
- Accession Number
- AD0803445
Entities
People
- H. Groschopp