- #Pratt and whitney analog lab master weight manual
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Many sub-types including the first two big orders for France, had the original curved wingtips and rudder but the NA-57 for France had the new wing and tail, first flown on the NA-54, which was structurally better and easier to produce. Main gears were far forward making nosing over difficult, and on most of fhesc variants the exhaust was collected at the trout of the engine and discharged through the right side of the cowl. The R-975 Whirlwind was fitted to most of the fixed-gear versions, except for the US Navy NA-1 and a batch for China, was of smaller diameter than the Pratt & Whitney Wasp used on the much more numerous retractable-gear models, and resulted in a slightly better forward view. These were probably the first flapped basic trainers, and flaps were provided on all subsequent models.
#Pratt and whitney analog lab master weight manual
Most BT-9s had fixed slats on the outer wings and were used as unarmed pilot trainers, fitted with flaps pumped down by a manual hydraulic system. The BT-9s were delivered in training colours of blue fuselage and chrome-yellow wings and tail, with blue/red/white-striped rudder. On the strength of this, the company moved to sunny California, paying a $600 annual rental for a site at Inglewood (on what is today Los Angeles International Airport) and building a completely new factory with 150 employees (nine years later the payroll had reached 91,000). This aircraft was later sold to Argentina, but in late 1935 the US Army adopted the NAA trainer and placed an order for 42, with the designation BT-9. This classic prototype thus became the NA-18 with enclosed cockpits (covered by tandem sliding canopies), a faired landing gear and the 600-hp (448-kW) Pratt 81 Whitney R-1340 Wasp engine.
The US Army pilots at Wright Field thought it the best design submitted and the nearest approach to a tactical aircraft then achieved in a trainer, but requested several changes.
#Pratt and whitney analog lab master weight registration
The NA-16 was flown at Dundalk in April 1935, with civil registration X-2080. Instead of becoming the GA-16 it was styled as the NA-16, reflecting the company's change of name. Lee Atwood, quickly produced a cantilever low-wing monoplane with all-metal structure (including a wing skinned with flush riveted stressed skin, though the rest of the aircraft was mainly fabric covered), fixed cantilever main legs, a 400-hp (298-kW) Wright R-975 Whirlwind engine and modern open cockpits. The General Aviation design team, under vice-president J. In late 1934 the US Army issued a requirement for a new basic trainer the next type encountered by pupil pilots after they had encountered the lower powered primary trainer.
Maryland, where types GA-l to GA-15 wars created. The story goes back even before North American Aviation put its name on itsĪircraft but served as the parent to General Aviation at Dundalk.