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Aviation History
1962
1962 - 1967.PDF
86 FLIGHT International, 6 September 1962 ENVIRONMENTAL TESTING SYSTEMS VP.100 VIBRATOR Unique lightweight moving assembly has high thrust to moving mass ratio and maximum armature rigidity. Low stray field. Filtered air-cooling system ensures low operating temperatures. System fully protected against mis-use or mal-operation. SPECIFICATIONS Thr„»t i,7so n» Frequency range 5 c.p.s. to 10.000 c.p.s. Total excursion I inch Weight of moving system 20lbs First major resonance of table 4,400 c.p.s. Table diameter 10 ' 5 KVA Amplifier for full thrust up to 2,000 c.p.s. 10 KVA Amplifier for full thrust up to 5.000 c.p.s. Control Consoles to customer's specifications All specially designed for operation with the VP.100 Complete range of Vibrators with thrusts down to 50 lbs. 0v ELECTRONIC VIBRATORS LTD. 24 Upper Brook Street, Mayfair, London W.I. Telephone Hyde Park 2291 HENDREY AIRCRAFT RELAYS RELAY TYPE 20B Replacement lor "S" and "10B" series. Improved performance with wiping contacts. Ratings up to 10 amps. 4 pole changeover, or up to 25 amps. 2 pole changeover. Accom modates two compression tags per terminal. For operation up to 60,000 ft. RELAY TYPE D4750 The hermetically sealed, high per formance Hendrey Relay Type D.4750 has four change-over wiping contacts rated at 15 amps. 30 V. D.C. or 200 V. 400 Cycles. A two-pole model is also available. The D.4750 satisfies a long-felt need in that it features silver contacts hermetically sealed in a separate compartment from the energising coil, ensuring sustained reliability and trouble-free operation. Ambient Temperature Range:-60° to + I00°C. Altitude: 60,000 feet. Dimensions: 3 in. X 3 in. x 2i in. Weight: 0.78 lb. nendrey Relays See the Hendrey Rang* of Equipment at Farnborougb Hendrey Relays Ltd., 390-394 Bath Road, Slough, Bucks Tel.: Burnham 609/611 MANUFACTURING ELECTRICAL ENGINEERS, CONTROL AND LABORATORY- APPARATUS. ADMIRALTY, PRINCIPAL MINISTRIES AND POST OFFICE LISTS, A.R.B. AND M.O.A. APPROVED INSPECTION
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