bell crank

(redirected from bell cranks)
Also found in: Dictionary.

bell crank

bell crank
A double lever in an aircraft control system used to change the direction of motion. Bell cranks are normally used in aileron controls and in the steering system of nose-wheels.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
The topology (figure 1) corresponds to a double wishbonetype front suspension with push-rods, which connects the lower rocker arms to the bell crank and is attached to the chassis with torsion bars instead of coil springs.
This system is simplified by replacing the fixed joint for a revolute joint between the bell crank and the chassis and a torque in opposition to its motion as a function of the torsion stiffness of the bar and the turn of the bell crank.
where k is the torsion stiffness of the bar, [theta] is the relative angular displacement between bell crank and chassis and [[theta].sub.0] is the angle before displacement.
One of the mechs found a FIT rubbing against a bell crank, which eventually could have made a hole in the FIT and started a horrendous fuel spill.
We also noticed that the FIT we had replaced a week ago once again was rubbing the bell crank that sits on the inboard side of the FIT.