Accession Number : AD0850921

Title :   Rotor Burst Protection Program Initial Test Results.

Descriptive Note : Final rept. on Phase 4,

Corporate Author : NAVAL AIR PROPULSION TEST CENTER PHILADELPHIA PA AERONAUTICAL ENGINE DEPT

Personal Author(s) : Martino, Albert A. ; Mangano, Gaetan J.

Report Date : 1969

Pagination or Media Count : 162

Abstract : The NASA sponsored Rotor Burst Protection program has produced the first high speed photographic sequence of an intentionally failed rotor within a containment device. This technical achievement has provided a means to study the fragment-containment system kinematics and material performance associated with disk and blade failures. The results of the first twenty-one tests provide data that can assist in establishing basic guidelines for the design of containment systems. Experiments providing information relative to the complex motion of disk and blade fragments for a failed rotor, and the effects of radial clearance, stress concentration, and material properties are reported. The theoretical derivation and related curves for the energy distribution of fragments from a rotating flat disk provide the total, translational, and rotational kinetic energy per fragment for combinations of fragment included angle and radius ratio are presented. A survey of uncontained failures occurring in U.S. Commercial and Naval aviation experience is reported. Test equipment and techniques are discussed. (Author)

Descriptors :   (*AXIAL FLOW TURBINE ROTORS, RUPTURE), (*TURBOJET ENGINES, PROTECTIVE COVERINGS), FAILURE(MECHANICS), FRAGMENTATION, STRESSES, INTERACTIONS, TRAJECTORIES, HIGH SPEED PHOTOGRAPHY, PHOTOGRAPHS, RINGS.

Subject Categories : Non-electrical Energy Conversion

Distribution Statement : APPROVED FOR PUBLIC RELEASE