Table of Contents
What is the round thing on top of Apache helicopter?
The pilot’s night vision sensor is attached to a rotating turret on top of the Apache’s nose.
What is helicopter rotor disk?
Definition of rotor disk : the plane circular area swept through by the blades of a helicopter rotor.
What is helicopter disk loading?
Disc loading of a hovering helicopter is the ratio of its weight to the total main rotor disc area. It is determined by dividing the total helicopter weight by the rotor disc area, which is the area swept by the blades of a rotor. A low disc loading is a direct indicator of high lift thrust efficiency.
What is the stick on the front of a helicopter?
The cyclic control, commonly called the cyclic stick or just cyclic, is similar in appearance on most helicopters to a control stick from a conventional aircraft. The cyclic stick commonly rises up from beneath the front of each pilot’s seat.
What helicopter can do a loop?
Westland lynx
The helicopter that can loop and barrel roll is the Westland lynx.
What are helicopter rotors made of?
Rotor blades are made out of various materials, including aluminium, composite structure, and steel or titanium, with abrasion shields along the leading edge. Rotorcraft blades are traditionally passive; however, some helicopters include active components on their blades.
How do helicopter rotors work?
Unlike airplanes, helicopters feature spinning wings called blades or rotors on top. As a helicopter’s blades spin, they create a force called lift that allows the helicopter to rise into the air. The rear rotor can face different directions, allowing the helicopter to move forward, backward, and sideways.
What is rotor blade solidity?
Rotor solidity is a function of the aspect ratio and number of blades in the rotor and is widely used as a parameter for ensuring geometric similarity in rotorcraft experiments. It provides a measure of how close a lifting rotor system is to an ideal actuator disk in momentum theory.
What is actuator disk model?
The actuator disc model is a simple version of the quasi-three-dimensional solution technique that combines (1) the two-dimensional blade-to-blade cascade flow at each radial station with (2) the (assumedly) axisymmetric (meridional) throughflow between the hub and the outer casing.
How do helicopters tilt?
In addition to moving up and down, helicopters can fly forward, backward and sideways. This kind of directional flight is achieved by tilting the swash plate assembly with the cyclic, which alters the pitch of each blade as it rotates.
What is the collective on a helicopter?
The collective pitch control (or simply “collective” or “thrust lever”) is located on the left side of the pilot’s seat and is operated with the left hand. The collective is used to make changes to the pitch angle of the main rotor blades and does this simultaneously, or collectively, as the name implies.