Investigation of a Slat in Several Different Positions on an NACA 64A010 Airfoil for a Wide Range of Subsonic Mach Numbers

Investigation of a Slat in Several Different Positions on an NACA 64A010 Airfoil for a Wide Range of Subsonic Mach Numbers PDF

Author: John A. Axelson

Publisher:

Published: 1954

Total Pages: 696

ISBN-13:

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An investigation of the two-dimensional aerodynamic characteristics of an NACA 64A010 airfoil with a slat has been conducted in the Mach number range from 0.25 to 0.85, with a corresponding Reynolds number range from 3.4 million to 8.1 million. Two families of slat positions were investigated, one with the slat leading edge extended forward along the airfoil chord line, and the other with the slat extended forward and displaced below the chord line.

A Study of the Transient Behavior of Shock Waves in Transonic Channel Flows

A Study of the Transient Behavior of Shock Waves in Transonic Channel Flows PDF

Author: Robert V. Hess

Publisher:

Published: 1952

Total Pages: 734

ISBN-13:

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The accuracy of the result obtained in a fundamental paper by Kantrowitz (NACA TN 1225) that a small short-time lowering of the back pressure in steady, shock-free, transonic diffuser flow causes a stationary or trapped shock to form near the critical sonic channel throat is investigated by considering the contribution of a higher-order term in the short-time calculations which was neglected in Kantrowitz's paper. In this higher approximation to the short-time effects, the shock is no longer stationary or trapped unless it is supported by a negative steady-flow back pressure; the result thus is no long in disagreement with steady-flow solutions for stationary shocks.

An Evalution of Some Approximate Methods of Computing Landing Stresses in Aircraft

An Evalution of Some Approximate Methods of Computing Landing Stresses in Aircraft PDF

Author: Elbridge Z. Stowell

Publisher:

Published: 1948

Total Pages: 748

ISBN-13:

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The landing of a simplified airplane structure, consisting of a uniform beam for the wings, a concentrated mass for the fuselage, and a linear spring for the landing gear, is analyzed exactly and is compared with several approximate solutions. The approximate solutions which neglect elasticity in the determination of landing-gear reaction but consider elasticity in computations of stresses give results of good accuracy and indicate that drop tests in which rigid masses are used may be a satisfactory approach to the landing problem.

ANC Bulletin

ANC Bulletin PDF

Author: United States. Munitions Board. Aircraft Committee. Subcommittee on Air Force-Navy-Civil Aircraft Design Criteria

Publisher:

Published: 1956

Total Pages: 508

ISBN-13:

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