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Hirobo. Hirobo Electric Corporation (ヒロボー株式会社, Hirobō kabushiki-gaisha) is a Japanese RC model company best known for their line of high-quality radio controlled helicopter models, both glow fuel powered (also referred to as nitro powered) and more recently, electric powered. Its parent company is Hirobo Limited.
Helicopter flight controls are used to achieve and maintain controlled aerodynamic helicopter flight. [ 1 ] Changes to the aircraft flight control system transmit mechanically to the rotor, producing aerodynamic effects on the rotor blades that make the helicopter move in a desired way. To tilt forward and back (pitch) or sideways (roll ...
The Mini-500 has a tubular steel fuselage with a foam and glass-fibre structure cabin. It has a two-bladed semi-rigid rotor and a conventional two-blade tail rotor. The first Mini-500 flew in 1992 and the company delivered the first production factory-assembled helicopter in July 1994. Production of kits ceased in 1999 and the company claimed ...
An intermeshing-rotor helicopter (or synchropter) is a helicopter with a set of two main rotors turning in opposite directions, with each rotor mast mounted with a slight angle to the other, in a transversely symmetrical manner, so that the blades intermesh without colliding. The arrangement allows the helicopter to function without a tail ...
The helicopter rotor is powered by the engine, through the transmission, to the rotating mast. The mast is a cylindrical metal shaft that extends upward from—and is driven by—the transmission. At the top of the mast is the attachment point (colloquially called a Jesus nut) for the rotor blades called the hub.
The swashplate was originally proposed by Russian Boris Yuryev in 1911, though he did not use it on his first helicopter of 1912. [1]Pescara helicopters (1919–1930) are coaxial rotors helicopters, each rotor being controlled by a swashplate (oscillating bearing) driven by the first control stick for helicopter (UK 178,452 Improvement in or relating to Joy Sticks for helicopters.
A governor, or speed limiter or controller, is a device used to measure and regulate the speed of a machine, such as an engine.. A classic example is the centrifugal governor, also known as the Watt or fly-ball governor on a reciprocating steam engine, which uses the effect of inertial force on rotating weights driven by the machine output shaft to regulate its speed by altering the input flow ...
For helicopter, "autorotation" refers to the descending maneuver in which the engine is disengaged from the main rotor system and the rotor blades are driven solely by the upward flow of air through the rotor. The freewheeling unit is a special clutch mechanism that disengages any time the engine rotational speed is less than the rotor ...