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2. Переведите предложения.
1.
Вертолет - ЛА тяжелее воздуха, у которого подъемная сила и
поступательное движение обеспечивается одним или несколькими
несущими винтами.
2.
The airframe includes a fuselage with a cabin, cargo compartment and tail
boom, and undercarriage with main and nose landing gears and tail support.
3.
Вертолет способен совершать вертикальный взлет и посадку, полет в
различных направлениях, а также висеть над заданной точкой и на
заданной высоте.
4.
According to their mission helicopters are classified as atk, obsn, utility, cbt
assault transport, electronic warfare and target acquisition, antiarmor, etc.
5.
Одновинтовой вертолет состоит из следующих основных частей:
фюзеляжа с хвостовой балкой, силовой установки, трансмиссии,
несущего винта, рулевого винта, органов управления и шасси.
6.
An axial-flow turboshaft engine having a high power-to-weight ratio is
comprised of a compressor, combustion chamber, turbines, and main gear box.
7.
Трансмиссия вертолета служит для передачи мощности от двигателя к
несущему и рулевому винтам.
8.
By the swash-plate the pitch angle of the main rotor can be varied
simultaneously on all blades to change the lift and vertical movement of the
helicopter.
9.
Или же он может варьироваться циклически - для изменения наклона
несущего винта и осуществления поступательного движения и
управления вертолетом.
3. Переведите с опорой на текст.
HELICOPTER OPERATION
In a helicopter flight characteristics are determined by the rotational speed and
pitch variations of the rotor blades. Since its flight characteristics are independent of
forward speed, a helicopter is able to move in any direction at a controlled low speed
and still remains safely airborne.
Many factors determine the amount of lift available in helicopter operation.
Generally speaking, the pilot has control of two of these. One is the pitch angle of the
rotor blades; the other is the power delivered to the rotor. By controlling the pitch
angle of the rotor blades, the pilot can establish the vertical flight of the helicopter.
By manipulating the engine speed, the pilot maintains the desired amount of lift of
the aircraft regardless of the increase or decrease in blade pitch.
The cyclic pitch control is similar to the control stick of a conventional aircraft.
It acts through a mechanical linkage to cause the pitch of each main rotor blade to
change during a cycle of rotation. The rapidly rotating rotor blades create a disk area
that can be tilted in any direction with respect to the supporting rotor mast. Horizontal
flight is controlled by changing the direction of tilt of the rotor disk to produce a
force in the desired direction.
