Preliminary Data on Rain Deflection from Aircraft Windshields by Means of High-Velocity Jet-Air Blast

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From Summary: "A preliminary experimental investigation is being conducted to determine the feasibility of preventing rain from impinging on aircraft windshields by means of high-velocity jet-air blast. The results indicate that rain deflection by jet blast appears feasible for flight speeds comparable with landing and take-off speeds of interceptor-type jet aircraft; however, attainment of good visibility through the mist generated by raindrop breakup presents a problem. For the simulated windshield and the lower windshield angles used in the investigation, air-flow rates of the order of 3.3 pounds per minute of unheated air per inch of windshield span were required for … continued below

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17 p. : ill.

Creation Information

Ruggeri, Robert S. July 25, 1955.

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This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 339 times. More information about this report can be viewed below.

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  • Main Title: Preliminary Data on Rain Deflection from Aircraft Windshields by Means of High-Velocity Jet-Air Blast
  • Series Title: NACA Research Memorandums

Description

From Summary: "A preliminary experimental investigation is being conducted to determine the feasibility of preventing rain from impinging on aircraft windshields by means of high-velocity jet-air blast. The results indicate that rain deflection by jet blast appears feasible for flight speeds comparable with landing and take-off speeds of interceptor-type jet aircraft; however, attainment of good visibility through the mist generated by raindrop breakup presents a problem. For the simulated windshield and the lower windshield angles used in the investigation, air-flow rates of the order of 3.3 pounds per minute of unheated air per inch of windshield span were required for adequate rain deflection at a free-stream velocity of 135 miles per hour."

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17 p. : ill.

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  • Accession or Local Control No: 81N73138
  • URL: http://hdl.handle.net/2060/19810068716 External Link
  • Report No.: NACA-RM-E55E17a
  • Center for AeroSpace Information Number: 19810068716
  • Archival Resource Key: ark:/67531/metadc53522

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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 25, 1955

Added to The UNT Digital Library

  • Nov. 11, 2011, 7:22 p.m.

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  • April 12, 2018, 11:07 a.m.

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Ruggeri, Robert S. Preliminary Data on Rain Deflection from Aircraft Windshields by Means of High-Velocity Jet-Air Blast, report, July 25, 1955; (https://digital.library.unt.edu/ark:/67531/metadc53522/: accessed January 22, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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