Avionics
Altimeter Uses Constant Beat Frequency
Paris—Radio altimeter design, developed here to meet the critical needs of Category 3 instrument landings, will be used on the Concorde and new French military aircraft, both fixed and rotary wing types. The new design, developed by France’s TRT (Telecommunications Radioelectriques et Telephoniques), is being considered for use on one of the U.S. trijet commercial transports.
By Philip J. Klass