• September 16, 1974 P. 57, 59 Petroleum Helicopters BO.105C circles oil drilling rig 70 mi. offshore in the Gulf of Mexico. Vertol has been stressing twin-engine safety factor for oil operations in this area as drilling has moved out to 100-150 mi. from land.
• January 19, 1970 P. 20, 21 Mockup of Boeing/Boelkow Bo.105 version that will be entered in the U.S. Navy’s light airborne multipurpose system helicopter competition is shown equipped with magnetic anomoly detection drogue and anti-submarine torpedo.
• June 26, 1967 P. 80 (6 Pages) Boelkow Bo-105 rigid-rotor helicopter shown in flight (above and below) is V-2 prototype powered by Allison 250-C18 turbines. The military version of the Allison engine—the T63—powers the Army/Hughes light observation helicopter (LOH). Forward cabin of the Bo-105 has two doors on each side for access to front and rear seats. Rear seats tip forward or can be removed to expand rear cargo compartment. The compartment has rear clamshell doors and can accommodate two standard NATO litters.
• June 26, 1967 P. 80 (6 Pages)
• June 26, 1967 P. 80 (6 Pages) Aft view of V-3 prototype of Boelkow Bo-105 shows single exhaust port and open clamshell door of cargo compartment The door is made of glass fiber. Filler nozzle for fuel tank under the cargo space is on the lower left side of the fuselage.
• June 26, 1967 P. 80 (6 Pages) Titanium rotor head with hub attachment assemblies (above) of Boelkow Bo-105 rigid-rotor helicopter has no flap and drag hinges. Need for these is eliminated by flexing of glass-fiber rotor blades. Blades are actuated for pitch by push rods.
• June 26, 1967 P. 80 (6 Pages) Main gear box design used on the Boelkow Bo-105 rigid-rotor helicopter is shown in drawing. Two turboshaft engines are connected by short drive shafts at bottom of housing. The small shaft in the center drives the tail rotor.
• June 26, 1967 P. 80 (6 Pages)
• June 26, 1967 P. 80 (6 Pages) Installation of one of two MAN-Turbo 6022-A3 engines is shown on prototype V-3 Boelkow Bo-105 rigid-rotor helicopter on static display at Paris air show.
• June 26, 1967 P. 80 (6 Pages) Three bladed version of Boelkow rigid rotor is shown on a Sud SA 340.
• July 29, 1974 P. 19

Load More Results