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For example, a helicopter with a 0.30 cu in (4.9 cm 3) engine was a 30 class and a helicopter with a 0.90 cu in (14.7 cm 3) engine was referred to as a 90 class helicopter. The bigger and more powerful the engine, the larger the main rotor blade that it can turn and hence the bigger the aircraft overall.
Weighing a mere 10 grams, the Picoo Z measures 170 mm long, and has a main rotor span of 130 mm. The helicopter is controlled by a 3-frequency a-b-c infrared controller, with two channels (one for the main rotor and one for the tail rotor) allowing independent user control of throttle (main rotor RPM) and tail rotor RPM.
It is important that each aircraft uses a different channel, otherwise interference could result. For example, if a person is flying an aircraft on channel 35 (used for 72.490 MHz in North America), and someone else turns their radio on the same channel, the aircraft's control will be compromised and the result is almost always a crash.
One key innovation of the rotorcraft is the four-channel fly-by-wire control system employed; the NH90 is the first helicopter in the world to be equipped with full fly-by-wire flight controls. [ 3 ] [ 45 ] A four-axis autopilot is also integrated with the fly-by-wire system, as are mission and navigation systems, to enable greater autonomy ...
The Mattel VertiBird helicopter flies around a central base containing an electric motor, spring lift assist, pitch control, batteries, and a throttle.A 21-inch arm with pitch control rod and the spindle that transfers the power to helicopter via drive springs and drive rod, is connected from the central base to the helicopter.
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The Yamaha R-MAX is a Japanese unmanned helicopter developed by the Yamaha Motor Company in the 1990s. The gasoline-powered aircraft has a two-bladed rotor and is remote-controlled by a line-of-sight user. It was designed primarily for agricultural use, and is capable of precise aerial spraying of crops.
The Robinson R44 aircraft spun out of control on its approach to the helicopter garage at Pearland Regional Airport around 9:30 Sunday morning, the dizzying CCTV footage of the incident showed.
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