Hey, check out the top of the main rotor mast: Those two objects sticking straight up are the blade tensioners. They prevent the main rotor from being able to teeter totter too much when the rotors are still and are rotating too slowly to be stable until sufficient RPM is achieved. The tensioners prevent the standing still, or slowly turning blade tips from striking the tail boom due to too much play--especially dangerous in gusty winds while on the pad. However, once the main rotors are spinning fast enough--the centrifugal force causes the blade tensioners to go from vertical to horizontal. This releases the tension, so that the main rotor assembly can now articulate and tilt freely to move the helicopter forwards, backwards and side-to-side. Watch at 0:40 and you can see the blade tensioners retract once the main rotor head is spinning fast enough. The engineering that went into the Bell 206 Jet Ranger is amazing!
Que maquina fantástica.
Hey, check out the top of the main rotor mast: Those two objects sticking straight up are the blade tensioners. They prevent the main rotor from being able to teeter totter too much when the rotors are still and are rotating too slowly to be stable until sufficient RPM is achieved. The tensioners prevent the standing still, or slowly turning blade tips from striking the tail boom due to too much play--especially dangerous in gusty winds while on the pad. However, once the main rotors are spinning fast enough--the centrifugal force causes the blade tensioners to go from vertical to horizontal. This releases the tension, so that the main rotor assembly can now articulate and tilt freely to move the helicopter forwards, backwards and side-to-side. Watch at 0:40 and you can see the blade tensioners retract once the main rotor head is spinning fast enough. The engineering that went into the Bell 206 Jet Ranger is amazing!
Meu helicópetero favorito muito lindo.
Eu tambem
Meu helicóptero favorito isso é uma máquina jet ranger
WoW !! dont stop uploading videos please
Ótimo a meia volta aos 2:11 minutos
I love it 😍😍