Preliminary analysis of effects of air cooling turbine blades on turbojet-engine performance

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Description

The effects of turbine-blade cooling on engine performance were analytically investigated for a turbojet engine in which cooling air is bled from the engine compressor. The analysis was made for a constant turbine-inlet temperature and a range of altitudes to determine the minimum cooling requirements to permit substitution of nonstrategic materials in turbine blading. The results indicate that, for a constant inlet temperature, air cooling of the turbine blades increases the specific fuel consumption and decreases the thrust of the engine. The highest possible cooling effectiveness is desirable to minimize coolant weight flow and its effects on engine performance.

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Schramm, Wilson B; Nachtigall, Alfred J & Arne, Vernon L August 2, 1950.

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This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and one other and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 84 times . More information about this report can be viewed below.

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  • Main Title: Preliminary analysis of effects of air cooling turbine blades on turbojet-engine performance
  • Series Title: NACA Research Memorandums

Description

The effects of turbine-blade cooling on engine performance were analytically investigated for a turbojet engine in which cooling air is bled from the engine compressor. The analysis was made for a constant turbine-inlet temperature and a range of altitudes to determine the minimum cooling requirements to permit substitution of nonstrategic materials in turbine blading. The results indicate that, for a constant inlet temperature, air cooling of the turbine blades increases the specific fuel consumption and decreases the thrust of the engine. The highest possible cooling effectiveness is desirable to minimize coolant weight flow and its effects on engine performance.

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  • : 93R15459
  • URL: http://hdl.handle.net/2060/19930086169 External Link
  • Report No.: NACA-RM-E50E22
  • Center for AeroSpace Information Number: 19930086169
  • Archival Resource Key: ark:/67531/metadc58453

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

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Creation Date

  • August 2, 1950

Added to The UNT Digital Library

  • Nov. 16, 2011, 7:33 a.m.

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  • Jan. 30, 2017, 3:39 p.m.

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Citations, Rights, Re-Use

Schramm, Wilson B; Nachtigall, Alfred J & Arne, Vernon L. Preliminary analysis of effects of air cooling turbine blades on turbojet-engine performance, report, August 2, 1950; (digital.library.unt.edu/ark:/67531/metadc58453/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.