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How does temperature affect the control cable aircraft?
Changes in temperature will affect the tension of the cables and this must be taken into account when adjusting the cable tension. It is usual for a temperature/tension graph to be given by the aircraft manufacturer. Using the graph, the correct tension can be applied to the cable.
Where the pilot controls an aircraft from?
The control stick is usually located on the floor of the cockpit; the pilot straddles it in his or her seat. Sometimes called the “joystick,” it controls the airplane’s attitude and altitude in the same way as the yoke.
What are the effects of over tightening control cables?
If the connection is compromised from over-tightening, the fluid or media you’re working with can’t flow correctly. It’s possible the tubing could be warped and that could lead to a host of other problems. Warped tubing can cause fluids to become blocked and tubes to start clogging.
What are the most common problems with aircraft flight control cables?
Rudder cables in tailwheel aircraft are the most susceptible systems to failure due to the stresses on the system and exposure to the elements. But, poor control cable system maintenance can also manifest itself as autopilot system issues, tight or jammed flight controls, etc.
What happened flight control?
Flight Control is a time management video game for iOS, Wii, Nintendo DS, Android, and Windows Phone 7 developed by Firemint and first released for iOS on March 5, 2009. In September 2015, the iOS version was removed for sale from the App Store, although it remains for sale on Android.
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. pushing or pulling the vehicle back in the opposite manner that it entered the cable system.
What causes a plane to cruise at 40°C?
The aircraft can be standing in the sunshine at 40°C, and half an hour later be at cruise altitude at -50°C. The difference in thermal contraction would cause a couple of centimetres slack in the cables at cruise, with the pilot then experiencing a control deadband: turn the yoke some degrees and nothing happens.
Why does a plane have to have pre tensioned cables?
Cables only pull, and the cable not pulling may not be slack, otherwise it could run off as well. Pre-tensioned cables can provide push loads, by reducing the pre-tension it was subjected to. Wing tips bend upwards during flight, bend upwards more when fuel runs out, and slam down at landing.
Why do throttle cables shrink in cold air?
After a few hours in the cold atmosphere cruising along, the throttle cables that run from the bottom of the throttle all the way out to the engines all shrink slightly different amounts, and so to get the same RPM’s you often have the throttles sitting at odd angles to each other. This is what they looked like on descent from 37,000′ one day.
How big is a flight control cable in centimeters?
So all in all, the flight control cables must accommodate a difference in length that in a large aircraft is in order of magnitude of 10-20 cm. The control cable has a diameter of 3-5 mm. Steel elastic modulus is 200 GPa, a stretch of -0.2/70 m/m causes a tension of 500 MPa, twice that of structural steel, and a force of 4,000N (800 lb).