Word: thrustingly
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Power Problem. The AEC did not say how feasible nuclear rockets look. Most scientific judgments about them have been pessimistic. Rocket motors develop their thrust by burning fuel with an oxidizer and expelling the products of combustion at high speed through a tail pipe. The energy of combustion is necessary to make the gases move fast, but the mass (weight) of the gases is also necessary. No mass, no thrust...
...companies had some new engines to display. Bristol Aeroplane Co., whose economical Proteus turboprop powers the new Britannia airliner (TIME, Dec. 19), showed off a bigger, 5,000-h.p. Orion version slated for 1959 production and an improved Olympus turbojet engine rated at a whopping 16,000 Ibs. of thrust. De Havilland uncorked a new gadget: a Supersprite rocket engine that weighs only 600 Ibs., yet can produce some 4,000 Ibs. of thrust for 40 sec. to lift heavily laden planes off short runways...
...Dart engine (1,780 h.p.), which is a main reason for Vickers' spectacular success (total sales: 353 planes) with its Viscount airliner (TIME, Jan. 3, 1955). As for Rolls's pure jet engines, its latest Avon turbojet is rated at better than 10,000 Ibs. of thrust, not only powers a wide range of military craft in Britain, but is also reaching out for civilian markets, will be in de Havilland's redesigned Comet IV jetliner...
...Bypass. But Rolls's most promising engine is its improved Conway bypass jet,* which it claims turns up 13,000 Ibs. of thrust from a power plant that is both lighter and more economical than its U.S. competitors in the big jet field, such as Pratt & Whitney...
...tail. The Hustler appears to be about 100 ft. long 60 ft. from wingtip to wingtip, roughly comparable to the current Air Force standby, Boeing's 600-m.p.h. B-47 medium bomber. But where the B-47 has six General Electric J47 (5,800 lbs. of thrust) engines, Convair's new B58 gets its supersonic hustle from only four General Electric J-47s, with an estimated thrust of more than 12,000 Ibs. each. Estimated speed of the Hustler: between 1,000 m.p.h. and 1,400 m.p.h...