Comparison of High-speed Operating Characteristics of Size 215 Cylindrical-roller Bearings as Determined in Turbojet Engine and in Laboratory Test Rig

Comparison of High-speed Operating Characteristics of Size 215 Cylindrical-roller Bearings as Determined in Turbojet Engine and in Laboratory Test Rig PDF Author: Arthur W. Goldstein
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ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 236

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Report

Report PDF Author: United States. National Advisory Committee for Aeronautics
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ISBN:
Category : Aeronautics
Languages : en
Pages : 24

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Report - National Advisory Committee for Aeronautics

Report - National Advisory Committee for Aeronautics PDF Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1208

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Annual Report of the National Advisory Committee for Aeronautics

Annual Report of the National Advisory Committee for Aeronautics PDF Author: United States. National Advisory Committee for Aeronautics
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ISBN:
Category : Aeronautics
Languages : en
Pages : 1200

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Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.

Research Memorandum

Research Memorandum PDF Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 38

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Studies of the Use of Freon-12 as a Wind-tunnel Testing Medium

Studies of the Use of Freon-12 as a Wind-tunnel Testing Medium PDF Author: Albert E. Von Doenhoff
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ISBN:
Category : Dichlorodifluoromethane
Languages : en
Pages : 668

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A number of studies relating to the use of Freon-12 as a substitute medium for air in aerodynamic testing have been made. The use of Freon-12 instead of air makes possible large savings in wind-tunnel drive power. Because of the fact that the ratio of specific heats is approximately 1.13 for Freon-12 as compared with 1.4 for air, some differences exist between data obtained in Freon-12 and air. Methods for predicting aerodynamic characteristics of bodies in air from data obtained in Freon-12, however, have been developed from the concept of similarity of the streamline pattern. These methods, derived from consideration of two-dimensional flows, provide substantial agreement in all cases for which comparative data are available. These data consist of measurements throughout a range of Mach number from approximately 0.4 to 1.2 of pressure distributions and hinge moments on swept and unswept wings having aspect ratios ranging from 4.0 to 9.0, including cases where a substantial part of the wing was stalled.

Technical Note - National Advisory Committee for Aeronautics

Technical Note - National Advisory Committee for Aeronautics PDF Author: United States. National Advisory Committee for Aeronautics
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ISBN:
Category : Aeronautics
Languages : en
Pages : 1082

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Research Abstracts

Research Abstracts PDF Author: United States. National Advisory Committee for Aeronautics
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ISBN:
Category : Aeronautics
Languages : en
Pages : 568

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Catalog of Technical Reports

Catalog of Technical Reports PDF Author: United States. Dept. of Commerce. Office of Technical Services
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ISBN:
Category :
Languages : en
Pages : 850

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Index of NACA Technical Publications

Index of NACA Technical Publications PDF Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 274

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