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Aviation History
1970
1970 - 0833.PDF
General-aviation postscript Above, a new prototype of the Pilatus Porter was shown at Hanover. It has a swept fin of larger area, originally designed for the Twin Porter, the wing has been stressed for a higher gross weight and the span increased. Gross weight is up by 6601b, 299kg to 5,5101b, 2,500kg. The aircraft uses the new 500 h.p. Lycoming TIO-720, claimed to be the largest horizontally opposed, air- cooled piston aero engine produced. Right, twin-engined Hustler for the busy executive: Swearin- gen's latest idea for a transonic business jet, the SA-28T, now has its engines on the wing instead of shoulder-mounted around the tail. Company officials spoke of deliveries as early as 1972 Ekco's solid-state automatic VHF/DF, left, looks like being a big export seller if the Hanover reception is any yardstick. Right, the ER4-67I transceiver by EAS Avionics covers the frequency range 116.00MHz to IS 1.975 MHz in either 50kHz or 25kHz spacing. The equip ment is standard on the SA.330 Puma. Also shown on on the stand was a marker- beacon receiver to a Mintech requirement Products from two Rotax groups. Below, centre-piece of the mechanical systems display was the Harrier starterjAPU which earned the company the Queen's Award to Industry. Immediately to the right can be seen a sectioned auto-throttle unit for Concorde. Below left, on show on the Special Products Croup display was this constant-speed drive unit in which oil pressure is used to maintain an optimum friction load on the ball and toroid drive Above, a pre-production unit of the ARC AN ARN-80 naviga tion receiver showing the modules for VORjLOC, marker and glideslope functions. The extreme miniaturisation can be seen in the assembly of the marker receiver module
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