Boeing Stearman

  • CountryUnited States of America
  • TypeTwo seat sport, utility and agricultural biplane
  • PowerplantsOne 170kW (225hp) Lycoming R680 nine cylinder radial piston engine driving a two blade fixed pitch propeller, or alternatively a 165kW (220hp) Continental W6706 or 170kW (225hp) Jacobs R7557 piston radial. Many later converted with a 335kW (450hp) Pratt & Whitney R985A61 radial piston engine.
  • PerformanceMax cruising speed 200km/h (108kt), typical cruising speed range 148 to 170km/h (80 to 92kt). Initial rate of climb 1000ft/min. Service ceiling 11,200ft. Range with max fuel at 148km/h (80kt) cruising speed 605km (325nm).
  • WeightsBasic operating 940kg (2075lb), max takeoff 1275kg (2810lb), or max takeoff in ag configuration 2040kg (4500lb).
  • DimentionsWing span 9.80m (32ft 2in), length 7.62m (25ft 0in), height 2.79m (9ft 2in). Wing area 27.6m2 (297.4sq ft).
  • CapacityTypical seating for two in tandem, or single pilot only when used for agricultural work.
  • ProductionTotal production 8584. Postwar more than 2100 were converted for agricultural spraying work. Several hundred fly with private owners.

The Boeing Stearman is maybe the most broadly known and perceived biplane in the USA, as it was that nation's essential fundamental coach all through World War 2.

This well known biplane started life as an outline of the Stearman Division of United Aircraft (around then United Aircraft additionally possessed Boeing and United Airlines), which Boeing procured as a completely claimed subsidiary in 1934. At the time of the takeover advancement on the X-70 preparation biplane was overall progressed, and Stearman proceeded with chip away at the sort under Boeing possession. The model of the Stearman Model 75, as the X70 got to be, flew without precedent for 1936. That year Stearman conveyed the first generation Model 35s, as the Pt13, to the US Army Air Corps. That administration promptly discovered the Lycoming R680 controlled Pt13 to be a perfect fundamental mentor, the airframe was rough and pardoning, and the moderate turning outspread motor dependable and sensibly prudent.

America's section into World War 2 brought with it enormous necessities for pilot preparing and the US Army and Navy happened to purchase a large number of Pt13s and Continental engined Pt17s and N2ss. Amid the war just about all American pilots attempted essential preparing on the Pt13 or Pt17, and the sort was sent out to Canada (as the Kaydet), Britain and different countries. Separated from in Canada the Kaydet name was informally broadly received for the sort.

Post bellum, the Stearman's rough development and great low speed taking care of saw substantial numbers changed over for farming splashing work. Numerous transformations included supplanting the Stearman's fabric blanket with metal (to evade issues with concoction pollution), while numerous were fitted with all the more effective 335kw (450hp) P&w R985a61 radials.

Today numerous hundred Stearmans are still flown in private hands, in spite of the fact that its harvest splashing days are generally over.

Pictures of Boeing Stearman