The TT Strap is a flight-critical part that attaches the rotor blade to the rotor hub of a helicopter. These parts take the entire centrifugal force of the rotor blade while allowing pitch input, or feathering, of the blades, all in a compact package
LORD TT straps are designed for more than 20 different aircraft applications and has manufactured more than 500,000 straps. This experience, coupled with ongoing investment in manufacturing facilities and equipment, gives our customers confidence in the quality and reliability of our product.
Our customers also benefit from the fact that Parker Lord is the PMA holder, designer and manufacturer of the TT strap the corporation supplies.
TT Strap Comparison
We subjected a LORD 206 TT strap, and a competitor’s 206 TT strap to a series of tests commonly used to gauge part acceptability. The head-to-head ground-air-ground (GAG) cycle test revealed a worrisome difference in the competitor part. When subjected to a GAG test using the overspeed centrifugal force (CF) condition, the competitor part lasted less than 1/5th the cycles of the LORD strap!
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A head-to-head comparison of LORD-made Bell 206 Tension Torsion (TT) Straps with a competitor’s offering led to alarming results. The surprise came from the numbers — and the staggering difference between them.
Here is an article published in the April/May 2021 issue of helicopter Maintenance Magazine about our PMA part for the AS350 Main Rotor Spherical Bearing.
The old adage that you can’t fit a square peg into a round hole doesn’t hold true for Parker Lord. At least not when helicopters are concerned.
We’ve upgraded the elastomeric pad on the Bell 412 Aft Landing Gear Strap to better accept the load of the helicopter’s aft landing gear cross tube. Essentially placing a round object on a flat surface with little to no displacement or shift.
Complete and submit this form to have our engineers analyze your vibration and shock requirements for specific uses and applications.
Used extensively on all modern helicopters, elastomeric components are one of the main reasons for the vast improvements in performance and reliability these new aircraft exhibit. This webinar explains the construction, function, maintenance and the inspection of these various types of components. This session is tailored to helicopter maintenance technicians but also benefits pilots, helping them with their daily inspections.