Brock KB-3

1985



The Brock KB-3 is an American autogyro that was designed by Ken Brock, produced by Ken Brock Mfg and introduced in 1985. The aircraft was supplied as a kit for amateur construction and was also available as plans.

The KB-3 was derived from the 1970 KB-2 and specifically designed to comply with the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of 254 lb (115 kg). The aircraft has a standard empty weight of 250 lb (113 kg). It features a single main rotor, a single-seat open cockpit without a windshield, tricycle landing gear and a twin cylinder, liquid-cooled, two-stroke, dual-ignition 64 hp (48 kW) Rotax 582 engine in pusher configuration.

The aircraft fuselage is made from bolted-together aluminum tubing. Its 22 ft (6.7 m) diameter rotor has two blades. Factory available options included a main rotor pre-rotator, a rotor brake and an instrument package. Fuel capacity is 5 U.S. gallons (19 L; 4.2 imp gal) and is housed in a combination pilot seat/fuel tank.

Due to its small size and light weight the KB-3 is easy to transport by trailer and can be set up to fly in ten minutes.


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