Historical
ANSI/ASHRAE 87.1-1992
Method of Testing Fan Vibration--Blade Vibrations and Critical Speeds
Provides a standard method of testing propeller fans for aerodynamically excited vibrations and critical speeds. The objective is to quantify those dynamic characteristics of propeller fans that are essential in the proper selection and application of such fans to avoid resonances that can be excited by aerodynamic forces acting on the fan blades. Dual units of measurement.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]
