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Aviation History
1966
1966 - 0042.PDF
32 FUGHT International, 6 January 19a AiResearch TPE33I single-shaft turboprop. Two-stage centrifugal compressor with single:sided impellers of 5.6lb/scc mass flow and 7^9 : I pressure ratio. Annular combustion chamber. Three-stage axial turbine. Rating, 575_s.h.p. Weight, 3121b. Width, I9.5in. Height, 24.7in. Military designation, T76 AERO ENGINES . . . as an AAPP. A coupled version of the AAPP has also been proposed to provide twin-engine reliability. Rover's other aero product is the TP90 turboprop of 120 h.p., which in August last year received a C of A in air Auster Autocrat. With the merging of Alvis with Rover the repair and overhaul of Lycoming piston engines undertaken by Alvis continues at the company's Coventry plant. USA AIRESEARCH (AiResearch Manufacturing Company) (Division of the Garrett Corpora- tion) Phoenix, Arizona. With small gas turbines of under 1,000 h.p., air turbine starters and related turbo- machinery as its major product lines, AiResearch has produced well over 10,000 turbines in these categories. Important among its new family of turboprop and turboshaft single-shaft engines is the TPE331 turboprop sponsored by the USN as the T76. In its military version as the T76-G-6 and -8, the engine is rated at 660 s.h.p. and powers the North American OV-10A COIN aircraft. As the TPE331 and rated at 575 s.h.p., it also powers the Mooney MU-2B and Aero Turbo Com- mander executive aircraft, the Helio Stallion, Volpar Beechcraft 18 conversions and the Fairchild Hiller Turbo-Porter. For the MU-2 and Turbo Commander alone, AiResearch has received orders for more than 250 TPE331s. ALLISON (Allison Division, GeneralMotors Corporation) Indianapolis, Indiana. With its 50th anniversary celebrated last year, Allison is unique as the only company in America to have achieved quantity production of a high-power turboprop. Its major products, the Model 501 and T56 turboprops, are complementary civil and military designs. Main application of the 501 is in the Lockheed Electra, which is powered by four 501-Dl 3 engines of 3,750 e.h.p. As the 501-D13D the same engine has also been used to provide turbo- prop conversions of Convair 340/440 air- craft. Over 50 such conversions have been built under the designation Convair 580. As the T56, the engine has ratings extend- ing from 4,050 e.h.p. to 4,910 e.h.p. Its major applications are in the Lockheed C-130 in all its versions, in the Lockheed P-3A Orion and in the Grumman E-2A Hawkeye. The company's other large turboprop, the 4.125 s.h.p. T78, is a regenerative design using a heat exchanger of similar gas-flow configuration to that on the early Bristol Theseus. Intended as a replacement for the T56 in maritime reconnaissance air- craft, this very advanced engine will not continue under development beyond this autumn. Second major product of Allison is the 250 s.h.p. T63 turboshaft, with its com- mercial counterpart, the Model 250. The T63 has a major outlet in the Hughes OH-6A helicopter which won the US Army's LOH competition; civil derivative of the OH-6A is the Hughes 500 fitted with the 317 s.h.p. Model 250-C18. Competing with the latter, and also powered by the Model 250-C18, is the Fairchild-Hiller FH-1100. Recently, Allison has also undertaken an exploratory programme on lift turbofans, and its 610-D1 engine is of twin-spool QH-50D has greater range and payload than the QH-50C, which was powered by the 300 s.h.p. T50-BO-10, in production at Seattle until last year. Boeing in 1964 joined with FabriqueNationale to form a new Belgian enterprise, FN-Boeing Turbines SA (see FN Boeing).The company is responsible for all Boeing turbine activities in Europe. CONTINENTAL (Aircraft Engin* Division, Continental Motors Corporation) Muskegon, Michigan. More than 55,000 of the world's light piston aircraft are Continental-powered, The cur- rent range of engines includes horizontally opposed, air-cooled four- and six-cylinder units from 65 to 390 h.p., with variants geared, supercharged, turbo-supercharged, and fuel injected. Rolls-Royce is licensed to manufacture and sell Continental piston engines in Europe and other areas. CONTINENTAL (Gas Turbine Division, Continental Aviation and Engineering Cor- poration) Detroit, Michigan. As American licensee of Turbomeca, this company has manufactured some 6,000 Marbore turbojets under the designation J69. Long-life version based on the Marbor<§ II is the 1,0251b J69-T-25 which powers the Cessna T-37B. More powerful and based on the second generation Marbore, is the short-life J69-T-29 which incorporates an axial stage ahead of the single stage centrifugal compressor. This version is rated at 1,7001b and powers the Ryan BQM-34A drone. Other Continental engines are the small 310 s.h.p. T65 turboshaft intended to power Allison Model 250free-turbine turboshaft. Six-stage axial plus single-stage centrifugal com- pressor with single sided impeller of 3lb/sec mass flow and 6.2 : I pressure ratio. Single combustion chamber. Two- stage axial compressor-turbine, two-stage axial free-turbine. Rating, 250 s.h.p. Weight, 1361b. Width, I9in. Height, 22.5in front fan:design. Thrust is 10,0001b and target thrust: weight ratio is 22:1. Reports suggest that the company has been investi- gating the replacement of steel and titanium components by veryllium to minimise engine weight. In view of Allison's long-term technical collaboration agreement with Rolls-Royce, it seems likely that the company will be the American participant in the Anglo-US agreement on development of an advanced lift jet. BOEING (Turbine Division, The Boeing Company) Seattle, Washington. Major product of Boeing's Turbine Division is the T50-BO-10 turboshaft of 330 s.h.p., production of which was initiated in 1965 to power the Gyrodyne QH-50D drone anti-submarine helicopter (DASH). The light civil and military helicopters, and the T67 coupled turboshaft comprising two Model 217-10 engines giving a combined output of 1,400 s.h.p., plus 671b thrust. The XT67-T-1 is being test flown in a Bell Model 208 helicopter. FRANKLIN (Franklin Engine Company) Syracuse, NY. The company's new range of horizontally opposed two-, four- and six-cylinder piston engines for light aircraft now extends to 12 models covering 60 h.p. to 260 h.p. The 240 h.p. 6VS-335B model is turbo-super- charged and the 6AGS-335, of 260 h.p., is turbo-supercharged and has fuel injection- In the Cessna 172 and 175, for which it is FAA-approved, the six-cylinder 6A-335B offers more than a 10 m.p.h. increase in top speed.
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