SAE AIR 883:1965 PDF Download

SAE AIR 883:1965 standard provides guidelines and procedures for testing and addressing the issue of ground resonance in helicopters. Ground resonance is a phenomenon that originated during the early development of autogiros. Although it is commonly associated with the ground, it should not be confused with the more common term "ground effect." Ground resonance issues typically occur when the helicopter is on or near the ground.

The standard aims to provide a systematic approach to mitigating and preventing ground resonance in helicopters. It helps identify the conditions and factors that contribute to ground resonance and outlines methods for conducting tests to diagnose and assess the problem. By utilizing the recommended procedures, helicopter operators and maintenance personnel can effectively address and resolve ground resonance issues.

SAE AIR 883:1965 supersedes and replaces a previous standard, AIR 12, providing an updated and more comprehensive set of guidelines for ground resonance testing in helicopters. It serves as a valuable resource for the aviation industry, helping to enhance the safety and performance of helicopters by effectively addressing the issue of ground resonance.