View Full Version : Use Of Springs
Easy226
8th Oct 2003, 03:56
Hi everone, for my aeropace lecture notes, I have to list four applications where springs are used in aircraft? Anyone able to provide some applications?
Many Thanks
Dan
Colonel Blink
8th Oct 2003, 05:07
In the mechanism of an air speed indicator would be one.
In the Oleos possibly.
In the seat belt mechanism.
Daft one - in seats!!
Whispering Giant
8th Oct 2003, 05:41
You also forgot that spring's are also sometimes used in control run's to introduce feel into the system.
regards
W.G
Genghis the Engineer
8th Oct 2003, 16:40
A few that spring to mind...
- Artificial pitch feel, normally in a fixed wing aircraft with good stick-free LSS but inadequate stick-fixed LSS. Obvious example, PA31
- Throttle return mechanism in carburettor - anything with a Rotax engine and conventional Bing carburettor (as opposed to a diaphragm carb).
- Return spring for a high friction single cable pitch trimmer / trim tab. Obvious example Reality / Just Aircraft Escapade.
- Push-down spring for sliding seat mechanism locking pin. Obvious example, any high wing Cessna.
- Door catches on most light aircraft
- Spring-bungee in undercarriage mechanism. Obvious example, Piper Cub (and it's many copies).
- Projecting the parachute drogue from a personal parachute - any aircraft using personal parachutes (as opposed to an ejection seat or BRS).
- Within the engine bay, wrapped around fuel hose to protect them from chafing.
G
Onan the Clumsy
8th Oct 2003, 22:22
In the control lines to the tailwheel of a tailwheel aircraft
The tailwheel mounting bracket or tail skid (not a coiled spring, but a spring all the same.
The control spring in a propellor govenor
The spring in a propellor hub
The springs on camlocks and quarter turns
Springs used to hold lightbulbs in place in bayonet fittings
The springiness of the ELT antenna
The tensionning springs used in an ADF sense antenna
Bungee cords used as trim control in sailplanes
Bungee cords used as undercarriage tensionners in a Piper Cub.
av8boy
8th Oct 2003, 23:21
Valve springs in a piston engine.
Spring in a yoke clip/kneeboard.
Dave
604guy
9th Oct 2003, 00:02
Spring in my Papermate pen and on most days the spring in my step. :)
av8boy
9th Oct 2003, 05:06
I was gonna mention the spring in your step!
vector4fun
9th Oct 2003, 22:57
ummmm, maybe I missed it earlier, but the main gear of most single-engine Cessnas (and a few other types) is one Big spring. :cool:
BigGreenPleasureMachine
10th Oct 2003, 23:11
Spring onions in the sarnies?
Cabin doors, wiper blade arms, sliding windows, clocks, access doors, bleed air valves, check valves, cable retainers, flap operating systems on some a/c.
ChrisVJ
11th Oct 2003, 15:59
Water rudder connection to main rudder on both floats and seaplanes.
Choke return spring on my Rotax.
Lift relief spring for retraction on my U/c,
O/centre locks retention on my U/carriage.