Author: Ira R. Schwartz
Publisher:
ISBN:
Category : Sonic boom
Languages : en
Pages : 472
Book Description
Prediction methods for sonic boom generation and propagation with overpressure minimization in supersonic transport design and operation.
Sonic-boom Research
Author: Harvey H. Hubbard
Publisher:
ISBN:
Category : Sonic boom
Languages : en
Pages : 52
Book Description
Publisher:
ISBN:
Category : Sonic boom
Languages : en
Pages : 52
Book Description
NASA Reference Publication
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 628
Book Description
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 628
Book Description
NASA Technical Memorandum
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 52
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 52
Book Description
Status of Sonic Boom Methodology and Understanding
Author: Christine M. Darden
Publisher:
ISBN:
Category : Sonic boom
Languages : en
Pages : 40
Book Description
Publisher:
ISBN:
Category : Sonic boom
Languages : en
Pages : 40
Book Description
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 390
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 390
Book Description
Aeroacoustics of Flight Vehicles
Author: Harvey H. Hubbard
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 616
Book Description
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 616
Book Description
Contemporary Research in Engineering Science
Author: Romesh C. Batra
Publisher: Springer Science & Business Media
ISBN: 3642800017
Category : Technology & Engineering
Languages : en
Pages : 696
Book Description
Fatigue failures occur in aerospace,marine,nuclear structures and automobile com ponents from initiation and propagation of cracks from holes,scratches or defects in the material. To design against these failures, crack propagation life and fracture strength need to be accurately predicted. It is reported in the literature, that these failures often initiate as surface cracks, corner cracks and cracks emanating from fastner holes. Such cracks are with elliptic or nearly elliptic in shapes. The deviation from elliptic shape is due to varying constraint effect along the crack front. Even in situations, when the cracks are through the thickness of the material, there would be thicknesswise variation of constraint effects leading to three dimensional nature of crack growth. Accurate predictions of the crack growth in these cases by numerical methods can be made only by solving three-dimensional boundary value problems. Empirical relationships have been developed [1] based on Linear Elastic Fracture Mechanics over years describing fatigue crack growth response. Some of these empirical relationships required modifications in the later stages, to meet the design applications. The Crack closure phenomenon discovered by Elber[2, 3] during the crack growth phase is mainly attributed to the local material yielding near the crack tip and the consequent residual plastic wake behind the crack tip. It helped considerably in understanding several aspects of fatigue crack growth and rewrite these relations.
Publisher: Springer Science & Business Media
ISBN: 3642800017
Category : Technology & Engineering
Languages : en
Pages : 696
Book Description
Fatigue failures occur in aerospace,marine,nuclear structures and automobile com ponents from initiation and propagation of cracks from holes,scratches or defects in the material. To design against these failures, crack propagation life and fracture strength need to be accurately predicted. It is reported in the literature, that these failures often initiate as surface cracks, corner cracks and cracks emanating from fastner holes. Such cracks are with elliptic or nearly elliptic in shapes. The deviation from elliptic shape is due to varying constraint effect along the crack front. Even in situations, when the cracks are through the thickness of the material, there would be thicknesswise variation of constraint effects leading to three dimensional nature of crack growth. Accurate predictions of the crack growth in these cases by numerical methods can be made only by solving three-dimensional boundary value problems. Empirical relationships have been developed [1] based on Linear Elastic Fracture Mechanics over years describing fatigue crack growth response. Some of these empirical relationships required modifications in the later stages, to meet the design applications. The Crack closure phenomenon discovered by Elber[2, 3] during the crack growth phase is mainly attributed to the local material yielding near the crack tip and the consequent residual plastic wake behind the crack tip. It helped considerably in understanding several aspects of fatigue crack growth and rewrite these relations.
NASA's Contributions to Aeronautics: Aerodynamics, structures, propulsion, controls
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 980
Book Description
Two-volume collection of case studies on aspects of NACA-NASA research by noted engineers, airmen, historians, museum curators, journalists, and independent scholars. Explores various aspects of how NACA-NASA research took aeronautics from the subsonic to the hypersonic era.-publisher description.
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 980
Book Description
Two-volume collection of case studies on aspects of NACA-NASA research by noted engineers, airmen, historians, museum curators, journalists, and independent scholars. Explores various aspects of how NACA-NASA research took aeronautics from the subsonic to the hypersonic era.-publisher description.
NASA Contractor Report
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 506
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 506
Book Description
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 300
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 300
Book Description