초록 ▼

Disclosed is a combined antenna and helicopter rotor blade. The antenna has one or more electrically non-conductive rotor blades, each having an electrical conductor positioned parallel to the major axis of a respective rotor blade. An electrical connection is provided to connect the antenna to a ra

Disclosed is a combined antenna and helicopter rotor blade. The antenna has one or more electrically non-conductive rotor blades, each having an electrical conductor positioned parallel to the major axis of a respective rotor blade. An electrical connection is provided to connect the antenna to a radio for the reception or transmission of radio waves. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves. Two of the electrical conductors, having angular positions nearer to a predetermined angular position are connected via the electrical connector to the radio. The remaining conductors may either be connected to the body of the helicopter or supplied with a signal out of phase compared to that supplied to the two electrical conductors.

대표청구항 ▼

[ We claim:] [1.] An antenna system for high frequency communication in a rotary winged aircraft having a fuselage body provided with a plurality of electrically non-conductive rotor blades that are formed from a composite of non-metallic materials, said antenna system comprising:conductive antenna

[ We claim:] [1.] An antenna system for high frequency communication in a rotary winged aircraft having a fuselage body provided with a plurality of electrically non-conductive rotor blades that are formed from a composite of non-metallic materials, said antenna system comprising:conductive antenna means which extend longitudinally along a length of each of said plurality of rotor blades;connection means for electrically connecting said antenna means to an apparatus for transmission and reception of a plurality of high frequency radio waves having wavelengths in a range from 10 meters to 150 meters, said connection means including a first means rotating with said plurality of rotor blades and electrically connected to said antenna means and a second means electrically coupled to said first means and fixed to said fuselage body and electrically connected to said apparatus for transmission and reception of said high frequency radio waves;said antenna means including a plurality of electrical conductors each of which is affixed to a surface of a corresponding separate one of said plurality of electrically non-conductive rotor blades with each of said plurality of electrical conductors extending in parallel to a longitudinal axis of said separate one of said plurality of non-conductive rotor blades over substantially the full length of said corresponding separate rotor blade and constituting a radiating element of the antenna system.