Negative thrust and torque characteristics of an adjustable-pitch metal propeller

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Description

This report presents the results of a series of negative thrust and torque measurements made with a 4 foot diameter model of a conventional aluminum-alloy propeller. The tests were made in the 20-foot propeller-research tunnel of the National Advisory Committee for Aeronautics. The results show that the negative thrust is considerably affected by the shape and size of the body behind the propeller, that the maximum negative thrust increases with decrease in blade-angle setting, and that the drag of a locked propeller may be greatly reduced by feathering it into the wind. Several examples of possible applications of the data ... continued below

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Hartman, Edwin P. January 1, 1934.

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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 521 times , with 9 in the last month . More information about this report can be viewed below.

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  • Main Title: Negative thrust and torque characteristics of an adjustable-pitch metal propeller
  • Series Title: NACA Technical Reports

Description

This report presents the results of a series of negative thrust and torque measurements made with a 4 foot diameter model of a conventional aluminum-alloy propeller. The tests were made in the 20-foot propeller-research tunnel of the National Advisory Committee for Aeronautics. The results show that the negative thrust is considerably affected by the shape and size of the body behind the propeller, that the maximum negative thrust increases with decrease in blade-angle setting, and that the drag of a locked propeller may be greatly reduced by feathering it into the wind. Several examples of possible applications of the data are given.

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  • Accession or Local Control No: 93R20828
  • URL: http://hdl.handle.net/2060/19930091538 External Link
  • Report No.: NACA-TR-464
  • Center for AeroSpace Information Number: 19930091538
  • Archival Resource Key: ark:/67531/metadc66121

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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

  • January 1, 1934

Added to The UNT Digital Library

  • Nov. 17, 2011, 10:13 p.m.

Description Last Updated

  • April 4, 2018, 1:15 p.m.

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Hartman, Edwin P. Negative thrust and torque characteristics of an adjustable-pitch metal propeller, report, January 1, 1934; (digital.library.unt.edu/ark:/67531/metadc66121/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.