1872. Helicopter Weight Torque Advisory System
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Paper
Abstract
The helicopter weight and torque advisory system is an onboard avionics system that combines cargo hook load weight information with temperature, altitude, and fuel weight to compute optimum performance data for display to the pilots. The system assists the pilots in obtaining maximum cargo carrying capability while enhancing safety, reducing maintenance costs, and extending the life of the helicopter. Boeing Military Airplanes developed and built an engineering model of the system as an independent research and development project. It was reduced to practice in the laboratory and later installed in a U.S. Army CH-47 test helicopter to demonstrate its features and capabilities. Details on the model are included in U.S. Patent 4,780,838 issued to The Boeing Company October 25, 1988. The system features are generic and adaptable to different types of helicopters. It can be incorporated into or used with other avionics system components. It can also he a stand-alone system with its own dedicated processor, control panel, and display. The Weight and Torque Advisory System (WTAS) also includes a means to account for internal payload and its distribution for weight and balance calculations. This feature, coupled with the capability to account for expendable items such as stores and munitions, as well as fuel distributions, addresses the parameters necessary for weight and balance control during flight.
