Tungsten Alloy Bucking Bars in Aircraft

Aerospace applications of tungsten alloys include mass balances in satellites and helicopter rotor blades and in gyroscopic controls for missiles and avionics. In contrast to their vibration damping applications, these materials are also utilized, in the cockpit, to exaggerate the required vibrations in stall-warning shakers for control columns. Similarly, the advent of fly-by-wire controls has introduced small quantities of tungsten alloys into flight control joysticks, in order to increase stick inertia and therefore reintroduce some of the “feel” that is present in traditional controls, which use mechanical linkages to the elevators and ailerons.

Tungsten alloys contribute to aircraft fabrication and repair operations. To deaden the vibration caused by rivet guns, tungsten alloy bucking bars (“riveting dollies” or “hand anvils”) are used to absorb the force. The vibration can result in damage to nerves, muscles and bones in operators' hands causing Carpel Tunnel Syndrome (Vibration White Finger). Many aerospace companies now reduce the effects of vibration by using tungsten alloy bucking bars.

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