TRANSIENT TEMPERATURE PROFILES AND CALCULATED THERMAL STRAINS OF TURBOJET-ENGINE BUCKETS

Abstract

Tests were conducted to measure the chordwise temperature profiles in the buckets of two turbojet engines (J47 and J33) subjected to starts, accelerations, decelerations, and shutdowns. The temperature measurements were used in conjunction with analytical procedures based on elastic strain concepts and simple beam theory to calculate thermal strains in the bucket airfoils. The results indicated that the most severe temperature gradients and the highest computed thermal strains occurred at the bucket leading edge during engine starts for both engines. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1961
Accession Number
AD0258680

Entities

People

  • J.c. Freche
  • J.r. Johnston
  • R.a. Signorelli

Organizations

  • National Aeronautics and Space Administration

Tags

DTIC Thesaurus Topics

  • Deceleration
  • Engines
  • Isotherms
  • Jet Aircraft
  • Leading Edges
  • Measurement
  • Temperature Gradients
  • Turbojet Engines

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Engineering
  • Thermal Physics or Thermal Science.