Brock KB-3
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. Design and development
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 . The aircraft has a standard empty weight of . 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  Rotax 582 engine in pusher configuration. The aircraft fuselage is made from bolted-together aluminum tubing. Its  diameter rotor has two blades. Factory available options included a main rotor pre-rotator, a rotor brake and an instrument package. Fuel capacity is  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. Specifications (KB-3)

References

1980s United States sport aircraft
Homebuilt aircraft
Single-engined pusher autogyros
Ken Brock aircraft