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Aviation History
1957
1957 - 1502.PDF
592 FLIGHT, 11 October 1957 Above and below are a photograph of the prototype Lockheed CL-329 JetStar (two Wright TJ-37 or Bristol Orpheus, or four G.E. J85) and a diagram of a typical executive interior. Key to the latter: A, cabin door; B, baggage; C, emergency exit; D, galley; E, coat space; F, toilet; G, life raft; H, jump seat; J, berth seat; K, lounge berth; L, desk. Business and Touring Aircraft . . . Mooney Mark 20 Certificated in August 1955 theMark 20 is a four-seat low-wing aircraft of very dean design powered by a Lycoming flat-four driving a constant-speed propeller. The soundproofed cabin has individual seats at thefront and a bench at the rear, and is fitted with a heater and all the furnishings which onewould expect to find in an American aircraft (such as ashtrays, heating, foam-rubbercushions, coat hangers and curtains). The air- frame is manufactured from pressure-bondedlaminated spruce "sealed for the life of the airplane similar to the famous Mosquito." The laminar-flow wings are fitted with three-posi-tion manually operated slotted flaps, and the tailplane and vertical tail pivot as a unit toprovide trimming in the pitching plane. By the middle of last month 168 Mark 20shad been produced, the current output being one aircraft every three days. At the begin-ning of next year one aircraft should leave the plant every two days, and a peak rate of oneaircraft per working day is scheduled to be achieved by June 1 next. Mooney Aircraft Inc., KerryiHe, Texas. National NA-75 This aircraft is described as repre-senting the combined efforts of pilots and operators in the agricultural aviation ndusyand the engineers of National Aircraft who have spent several years in research and develop-ment. The NA-75 is a combination duste- sprayer with many attractive characteristic Like the majority of American aircraft i:this category, it is based upon the wartim Stearman. The many modified parts can bipurchased from National Aircraft for the modi fication of existing Stearmans and the NA-7is also marketed as a complete aircraft direc from the factory. One of the fundamentalsof the design is the "Hi-Lift" wing of Gottin gen 398 section with large end plates, manu-factured from a metal skeleton with fabric covering attached by clips. The gross wingarea of 338 sq ft allows the aircraft to fly empty at around 35 m.p.h. The fuselage has been largely redesignedand is covered with ten metal panels secured by patented quick-release fasteners all of whichcan be undone in five minutes by two men with screwdrivers, to lay the whole structurebare from the firewall to the tail. In the centre is the 31.7 cu ft glass-fibre dusting/sprayinghopper (both types of chemical can be loaded together and the change made from one to theother in flight). Behind the hopper is the single cockpit, and for better visibility the NA-75is designed to fly nose down at all times, all instrumentation being installed in the trailingedge of the upper-wing centre section. National Aircraft Corporation, Burbank,California. .. North American Sabreliner At present under development tomeet the U.S. Air Force's UT-X specification for a twin-engined light utility jet crew-trainerand executive transport, the North American Sabreliner has obvious applications as a busi-ness aircraft. Powered by twin General Elec- tric J85s mounted on the rear fuselage (asshown in the revised drawing at the foot of the page), the Sabreliner has an oval-sectionfuselage with a flight deck for two and a pres- surized cabin above the wing for from four tonine passengers. The interior can be main- tained at an equivalent altitude of 8,000ft at45,000ft and oxygen is provided for each seat station. Engineering features include thermalleading-edge de-icing, pressure fuelling from a socket above the port nacelle and a centralized-electronics and radio bay in the nose which can be reached without trestling. At least oneprototype is being manufactured to meet the military requirement and the company statethat they hope eventually to build the aircraft for commercial sale. North American Aviation, Inc., Los Angeles45, California. Northern - • Cruisemaster Originally designed by Bel-lanca, the well-known Cruisemaster four-seat, low-wing cabin monoplane is now being pro-duced by Northern Aircraft, who have pur- chased the design, certification, patents, toolsand jigs. Powered by a 230 h.p. flat-six Continental driving a constant-speed two-bladepropeller, the Cruisemaster has a retractable (Below) Mooney Mark 20 (Lycoming O-320). Below, artisfs impression of North American Sabreliner (two General Electric J85). , NA-75 (various engines).
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