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Aviation History
1962
1962 - 0595.PDF
PJCHI' International, 12 April 1962 595 INDUSTRY International Flight Systems Products Company News Flight Systems Channel Traffic Survey A detailed study of the low-level air traffic across the Eng lish Channel has been completed for Mo A by the Air Traffic Management Division of General Precision Systems Ltd, working in association with the Royal Radar Estab lishment. RRE provided a Metropolitan Vickers 10cm surveillance radar modified for MTI by Cossor. This equipment, together with receivers for monitoring VHF air-ground and HF point-to-point communications, was installed on the cliffs near Dover. Some 19 GPS observers were stationed at seven airports including Le Touquet, Calais and Ostend. The radar display was photographed and information reduced to punched-card form for subsequent data processing. A short film was made to illustrate flow patterns. Traffic across the Channel has been increasing rapidly, consisting mostly of car ferry flights, but with numerous charter and private flights and an appreci able volume of military movements. The observations were made for a fort night during last August and the analysis has recently been completed. Roller Maps Ordered The MoA has ordered production quantities of Roller Maps from Decca Navigator Co, presum ably for use in Canberras, Scimitars and Buccaneers, the types in which operational trials have been flown during the past three years. Trials have also been carried out, and are to be continued, in an F-105. The Roller Map employs strips cut from standard aeronautical charts and fed The Sunoir 31b aerial load unit, allowing use of o fixed aerial length with HF radios through a roller mechanism under a track pointer. The latest units are small enough to fit into the coaming, between instru ments and windscreen, folding flat when not in use. One version takes only electrical power from the aircraft and is otherwise completely independent, operating in a DR mode. The other has an input from Doppler radar. Decca Navigator are now developing a military navigation system of which the Roller Map forms an integral part. A 9in- wide strip of 1:1,000,000 scale map will cover a swath of country 125 miles wide and 3,700 miles long. Either pen or trans parent strip markers can be used to indicate present position. Decca are working at the same time on the back-projection type of pictorial map display, because this layout allows greater freedom of track with less pre-flight pre paration. On the other hand, the projec tion system is usually larger and rather more complex. Sunair HF and Coupler A new aerial coupler unit which eliminates the need for adjustable trailing aerials has been developed by Sunair Electronics Inc, the well-known manufacturer of light aircraft HF radio. Standard lengths for fixed aerials are 18, 24, 29, 34 and 48ft. The 22-channel T.22-RA radio has been sold in 100 coun tries and is in service with the Ghanaian, Malayan, Burmese and Peruvian air forces. It has also been tested by the US Army and received the military designation ARC-95. More recent is the 10-channel T-10-D, intended for aircraft with limited panel space. It weights 91b, measures 5in by 6in and is 12in deep, is partially transistorized, has a power output of 35W and is FCC type-accepted. Both the T-10-D and the aerial load unit are illustrated here. The T-22-RA (ARC-95) weighs 151b and has a power output of 45W into a 520hm aerial. Tacan for RAAF The Tacan beacons bought by the RAAF will be located at Canberra, Richmond, Williamtown, Am- berley, Townsville, Darwin and Laverton. The first of these beacons is to be delivered in October; and six mobile Tacans will be supplied during 1963. Sunair's new T-I0-D ten-channel HF radio for light aircraft. It weighs 91b and the panel measures Sin x 6in Automatic Weather Reporting The Fed eral Aviation Agency has issued a $292,856 contract to Bell Aerosystem Co for the development of a machine which can con vert teletype weather information auto matically into voice broadcast to be super imposed on VOR signals. The device must recognize three-letter station identifications, handle data at 100 words per minute and accept data from a second source for updating, correcting and message insertion by an operator. Up to 30 incoming weather messages containing up to 69 characters each will be recorded and stored. Weather information is at present broadcast from 410 FAA flight service stations at 30-min intervals. The automatic device will free human operators and facilitate better and faster service. The prototype is to be delivered to Nafec in March next year. Products SIPA Seat Production SIPA (Societe Industrielle pour Aeronautique) have to date produced 8,600 seats for Caravelles in service all over the world. The most recent orders have come from Jugoslovenski Aerotransport (JAT), Transportes Aereos Portugueses (TAP) and from Panair do Brasil. The company say that these seats "are the lightest of their type and have been proved by thousands of flying hours already logged by Caravelles."
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