• AIR1289
• Revision: A

• 1992-03-01

• S-12 Helicopter Powerplant Committee

This SAE Aerospace Information Report (AIR) outlines a recommended procedure for evaluation of the vibration environment to which the gas turbine engine powerplant is subjected in the helicopter installation. This analysis of engine vibration is normally demonstrated on a one-time basis upon initial certification, or after a major modification, of an engine/helicopter configuration. This AIR deals with linear vibration as measured on the basic case structure of the engine and not, for example, torsional vibration in drive shafting or vibration of a component within the engine such as a compressor or turbine airfoil. In summary, this AIR discusses the engine manufacturer's 'Installation Test Code' aspects of engine vibration and proposes an appropriate measurement method.

• SAE AIR 1289

• Aerospace

• Noise
• Vibration
• Hybrid engines
• Turboprop engines
• Rotary-wing aircraft