What is the smallest size cable that may be used in aircraft primary control systems? 1/8 inch.
What cable is used for aircraft primary control systems?
The most common aircraft cables are the 7 × 7 and 7 × 19. The 7 × 7 cable consists of seven strands of seven wires each. Six of these strands are laid around the center strand. [Figure 5-67] This is a cable of medium flexibility and is used for trim tab controls, engine controls, and indicator controls.
What are the primary controls of an aircraft?
The primary controls are the ailerons, elevator, and the rudder, which provide the aerodynamic force to make the aircraft follow a desired flightpath.
- Elevator. When the pilot moves the controls forward, the elevator surface is deflected downwards. …
- Aileron. Ailerons control roll about the longitudinal axis. …
What is cable tension in aircraft?
Cable tension is determined by measuring the amount of force needed to make an offset in the cable between two hardened steel blocks called anvils. A riser or plunger is pressed against the cable to form the offset.
What is used as control device for aircraft?
a control yoke (also known as a control column), centre stick or side-stick (the latter two also colloquially known as a control or joystick), governs the aircraft’s roll and pitch by moving the ailerons (or activating wing warping on some very early aircraft designs) when turned or deflected left and right, and moves …
What is the most common control cable used size?
The most common control cable sizes (depending on strength required) are 7×7 and 7×19 cables. A 7×7 cable consists of six strands of seven wires each, laid around a center strand of seven wires.
What is the purpose of a control cable?
Control cables occupy an intermediate position between power cables and communications cables. They are widely used to connect electric instruments and apparatus, for secondary switching of remote-control starters and regulators, for protective relaying, and in automation.
How are ailerons controlled?
Ailerons control roll about the longitudinal axis. The ailerons are attached to the outboard trailing edge of each wing and move in the opposite direction from each other. … Moving the control wheel, or control stick, to the right causes the right aileron to deflect upward and the left aileron to deflect downward.
What is the difference between flaps and ailerons?
An Aileron is used to control the roll of an aircraft. Ailerons are found on the trailing edge of the wing, typically closer to the wing tip. … Flaps are used to increase the amount of lift that a wing produces by increasing the camber and surface area of the wing. Typically they are located near the root of the wing.
What is the difference between yaw and pitch?
A yaw motion is a movement of the nose of the aircraft from side to side. The pitch axis is perpendicular to the yaw axis and is parallel to the plane of the wings with its origin at the center of gravity and directed towards the right wing tip. A pitch motion is an up or down movement of the nose of the aircraft.
How do you measure tension in a cable?
A dynamometer measures in-line force or tension by means of a load cell or mechanical scale installed between two shackles or hooks. Typically the dynamometer is attached to a ratcheting cable puller on one end and a come-a-long on the other, allowing the cable to tightened while in place as shown in the picture below.
Why do cable systems lose tension?
Cables can lose tension because of construction stretch, anchor creep, fitting slippage, and/or previous impacts elsewhere in the same run of HTCG.
What is the primary purpose of an autopilot?
The primary purpose of an autopilot system is to reduce the work strain and fatigue of controlling the aircraft during long flights. Most autopilots have both manual and automatic modes of operation. In the manual mode, the pilot selects each maneuver and makes small inputs into an autopilot controller.
How does the pilot control the plane?
The pilot controls the engine power using the throttle. Pushing the throttle increases power, and pulling it decreases power. The ailerons raise and lower the wings. The pilot controls the roll of the plane by raising one aileron or the other with a control wheel.
How many different types of flaps are there?
There are four basic types of flaps: plain, split, Fowler and slotted. The plain flap is simply a hinged portion of the trailing edge. Split type flaps are hinged at the bottom of the wing and create much more drag than plain flaps.
What is control column in aircraft?
: an airplane lever that operates the elevators by a fore-and-aft motion and the ailerons by turning a wheel mounted at the upper end of the lever — compare control stick.