Author: Dan M. Somers
Publisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 132
Book Description
A flapped natural laminar flow airfoil for general aviation applications, the NLF(1)-0215F, has been designed and analyzed theoretically and verified experimentally in the Langley Low Turbulence Pressure Tunnel. The basic objective of combining the high maximum lift of the NASA low speed airfoils with the low cruise drag of the NACA 6 series airfoils has been achieved. The safety requirement that the maximum lift coefficient not be significantly affected with transition fixed near the leading edge has also been met. Comparisons of the theoretical and experimental results show generally good agreement.
Design and Experimental Results for a Flapped Natural-laminar-flow Airfoil for General Aviation Applications
Author: Dan M. Somers
Publisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 132
Book Description
A flapped natural laminar flow airfoil for general aviation applications, the NLF(1)-0215F, has been designed and analyzed theoretically and verified experimentally in the Langley Low Turbulence Pressure Tunnel. The basic objective of combining the high maximum lift of the NASA low speed airfoils with the low cruise drag of the NACA 6 series airfoils has been achieved. The safety requirement that the maximum lift coefficient not be significantly affected with transition fixed near the leading edge has also been met. Comparisons of the theoretical and experimental results show generally good agreement.
Publisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 132
Book Description
A flapped natural laminar flow airfoil for general aviation applications, the NLF(1)-0215F, has been designed and analyzed theoretically and verified experimentally in the Langley Low Turbulence Pressure Tunnel. The basic objective of combining the high maximum lift of the NASA low speed airfoils with the low cruise drag of the NACA 6 series airfoils has been achieved. The safety requirement that the maximum lift coefficient not be significantly affected with transition fixed near the leading edge has also been met. Comparisons of the theoretical and experimental results show generally good agreement.
Design and Experimental Results for a Natural-laminar-flow Airfoil for General Aviation Applications
Author: Dan M. Somers
Publisher:
ISBN:
Category :
Languages : en
Pages : 108
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 108
Book Description
Design and Experimental Results for a Natural-Laminar-Flow Airfoil for General Aviation Application
Author: Dan M. Somers
Publisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 108
Book Description
A natural-laminar-flow airfoil for general aviation applications, the NLF(1)-0416, was designed and analyzed theoretically and verified experimentally in the Langley Low-Turbulence Pressure Tunnel. The basic objective of combining the high maximum lift of the NASA low-speed airfoils with the low cruise drag of the NACA 6-series airfoils was achieved. The safety requirement that the maximum lift coefficient not be significantly affected with transition fixed near the leading edge was also met. Comparisons of the theoretical and experimental results show excellent agreement. Comparisons with other airfoils, both laminar flow and turbulent flow, confirm the achievement of the basic objective.
Publisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 108
Book Description
A natural-laminar-flow airfoil for general aviation applications, the NLF(1)-0416, was designed and analyzed theoretically and verified experimentally in the Langley Low-Turbulence Pressure Tunnel. The basic objective of combining the high maximum lift of the NASA low-speed airfoils with the low cruise drag of the NACA 6-series airfoils was achieved. The safety requirement that the maximum lift coefficient not be significantly affected with transition fixed near the leading edge was also met. Comparisons of the theoretical and experimental results show excellent agreement. Comparisons with other airfoils, both laminar flow and turbulent flow, confirm the achievement of the basic objective.
Experimental Results for a Flapped Natural-laminar-flow Airfoil with High Lift/drag Ratio
Author:
Publisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 328
Book Description
Publisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 328
Book Description
Natural Laminar Flow and Laminar Flow Control
Author: R. W. Barnwell
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 432
Book Description
Research on laminar flow and its transition to turbulent flow has been an important part of fluid dynamics research during the last sixty years. Since transition impacts, in some way, every aspect of aircraft performance, this emphasis is not only understandable but should continue well into the future. The delay of transition through the use of a favorable pressure gradient by proper body shaping (natural laminar flow) or the use of a small amount of suction (laminar flow control) was recognized even in the early 1930s and rapidly became the foundation of much of the laminar flow research in the U.S. and abroad. As one would expect, there have been many approaches, both theoretical and experimental, employed to achieve the substantial progress made to date. Boundary layer stability theories have been formu lated and calibrated by a good deal of wind tunnel and flight experiments. New laminar now airfoils and wings have been designed and many have been employed in aircraft designs. While the early research was, of necessity, concerned with the design of subsonic aircraft interest has steadily moved to higher speeds including those appropriate to planetary entry. Clearly, there have been substantial advances in our understanding of transition physics and in the development and application of transition prediction methodolo gies to the design of aircraft.
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 432
Book Description
Research on laminar flow and its transition to turbulent flow has been an important part of fluid dynamics research during the last sixty years. Since transition impacts, in some way, every aspect of aircraft performance, this emphasis is not only understandable but should continue well into the future. The delay of transition through the use of a favorable pressure gradient by proper body shaping (natural laminar flow) or the use of a small amount of suction (laminar flow control) was recognized even in the early 1930s and rapidly became the foundation of much of the laminar flow research in the U.S. and abroad. As one would expect, there have been many approaches, both theoretical and experimental, employed to achieve the substantial progress made to date. Boundary layer stability theories have been formu lated and calibrated by a good deal of wind tunnel and flight experiments. New laminar now airfoils and wings have been designed and many have been employed in aircraft designs. While the early research was, of necessity, concerned with the design of subsonic aircraft interest has steadily moved to higher speeds including those appropriate to planetary entry. Clearly, there have been substantial advances in our understanding of transition physics and in the development and application of transition prediction methodolo gies to the design of aircraft.
NASA Technical Paper
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 316
Book Description
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 316
Book Description
Natural Laminar Flow Airfoil Design Considerations for Winglets on Low-speed Airplanes
Author: Cornelis P. Van Dam
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 36
Book Description
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 36
Book Description
Laminar Flow Aircraft Certification
Author:
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 340
Book Description
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 340
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 992
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 992
Book Description
NASA Technical Memorandum
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 92
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 92
Book Description