Paul Baumgarti was an Austrian who had worked on three helicopter designs during the war years before emigrating to Brazil. He experimented with a number of light helicopters in the 1950s and 1960s including the PB-64 which was an ultra-light single-seater with a minimal tubular fuselage structure.
The PB-64 had a pulse-jet propulsion arrangement with the two 13-kg ITA jets fitted to a transverse stabilising beam set at right angles to the rotor. The aircraft had no tail rotor but was fitted with a small, stainless steel, rudder. The blades have no taper or twist.
No production of any of these designs was undertaken.
Power: 2 x ITA pulse jet, 30 lb thrust
Rotor dia: 21 ft 0 in
Blade section: NACA 23012
Blade chord: 6.5 in
Length: 15 ft 0 in
Height: 7 ft 6 in
Empty weight: 240 lb
MAUW: 700 lb
Max speed: 80 mph
All Aero 