Exploratory investigation of a helicopter pressure-jet system on the Langley helicopter test tower

One of 5,163 reports in the series: NACA Research Memorandums available on this site.

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Description

Report presenting an investigation of a helicopter pressure-jet system. The effects of tip speed, fuel-air ratio, and pressure ratio on the propulsive characteristics of the pressure-jet system have been determined for a range of tip seeds, blade-root stagnation-pressure ratios, and fuel-air ratios. Results regarding tip-burner specific propulsive horsepower, propulsive horsepower per unit mean duct area, tip-burner specific fuel consumption, ratio of propulsive horsepower to equivalent air horsepower, effect of whirling on tip-unit thrust, effect of whirling on the tip-burner inlet pressure, effect of auxiliary fuel flow, power-off drag of tip units, and overall specific fuel consumption of pressure-jet system are ... continued below

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Makofski, Robert A. & Shivers, James P. July 27, 1956.

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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 106 times . More information about this report can be viewed below.

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  • Main Title: Exploratory investigation of a helicopter pressure-jet system on the Langley helicopter test tower
  • Series Title: NACA Research Memorandums

Description

Report presenting an investigation of a helicopter pressure-jet system. The effects of tip speed, fuel-air ratio, and pressure ratio on the propulsive characteristics of the pressure-jet system have been determined for a range of tip seeds, blade-root stagnation-pressure ratios, and fuel-air ratios. Results regarding tip-burner specific propulsive horsepower, propulsive horsepower per unit mean duct area, tip-burner specific fuel consumption, ratio of propulsive horsepower to equivalent air horsepower, effect of whirling on tip-unit thrust, effect of whirling on the tip-burner inlet pressure, effect of auxiliary fuel flow, power-off drag of tip units, and overall specific fuel consumption of pressure-jet system are provided.

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  • Accession or Local Control No: 93R18518
  • URL: http://hdl.handle.net/2060/19930089228 External Link
  • Report No.: NACA-RM-L56B17
  • Center for AeroSpace Information Number: 19930089228
  • Archival Resource Key: ark:/67531/metadc62435

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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

  • July 27, 1956

Added to The UNT Digital Library

  • Nov. 17, 2011, 10:13 p.m.

Description Last Updated

  • March 28, 2018, 2:10 p.m.

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Makofski, Robert A. & Shivers, James P. Exploratory investigation of a helicopter pressure-jet system on the Langley helicopter test tower, report, July 27, 1956; (digital.library.unt.edu/ark:/67531/metadc62435/: accessed July 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.