Wire strikes by light fixed and rotary wing aircraft have long been the concern of military aviation authorities in many countries. The result of this potential hazard particularly in darkness or bad weather conditions, is that the role of such aircraft is severely restricted. This paper describes work carried out in England to measure the radar reflectivity of samples of the common types of power cable at a variety of frequencies, polarization and angles of incidence. This work showed that in addition to a broadside flash, vertically polarized Q band signals gave significant reflections at angles of incidence of approximately 20 degree and 40 degree . These subsidiary returns were caused by the twisted construction of the cables and corresponded to the secondary and tertiary gating lobes of the periodic ripple in the cable surface.

Media Info

  • Features: References;
  • Pagination: p. 555-558

Subject/Index Terms

Filing Info

  • Accession Number: 00188562
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: n 77CH1271-6 AES
  • Files: TRIS
  • Created Date: Mar 14 1979 12:00AM