Lockheed in 1975

Brief History

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THK3 Glider

Gloster Meteor

Tupolev 154B

Last Crusader

Vought A-7D

Lockheed Aircraft

Aeritalia G-91Y

B-1 Strategic Bomb.

Northrop YF-17

F-86 Sabre

 

LOCKHEED AIRCRAFT CORPORATION IN 1975

 

15. MODEL 286 Rigid Rotor Helicopter

The rigid rotor concept developed by Lockheed has opened the way to helicopter flying ease, stability, control, and maneuverability far exceeding other rotorcraft. On June 30, 1966, the Model 286 helicopter became the first rigid rotorcraft to win Federal Aviation Administration Type certification, passing with high marks al the rigorous tests imposed in 350 hours of flying by both FAA and Lockheed experts. Powered by a Pratt & Whitney PT6 free-turbine engine located aft of the rotor, the Model 286 was the first pure helicopter under 10,000 lbs. gross weight to exceed 200 m.p.h. in level flight. The rigid rotor system, in which the blades are fixed rigidly to the mast, gives a helicopter the easy flying "feel" of a fixed wing aircraft. Most other helicopters have hinged or teetered rotor blades, and these systems make aerobatic maneuvers, which require high control power at all flight attitudes, extremely difficult. The Model 286 demonstrated its ability to fly loops, barrel rolls, vertical climbs and dives.

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  MARK 86 Gunfire Control System

All information on this page is from a Lockheed Aircraft Corporation brochure of 1975.