Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Techniques Used in the F-14 Variable-sweep Transition Flight Experiment
Author: Flutter Clearance of the F-14A Variable-Sweep Transition Flight Experiment Airplane, Phase 2
Author: Scientific and Technical Aerospace Reports
Author: Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 828
Book Description
Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1430
Book Description
Department of Housing and Urban Development--independent Agencies Appropriations for 1988
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on HUD-Independent AgenciesPublisher:
ISBN:
Category : United States
Languages : en
Pages : 1032
Book Description
Boundary-layer Transition Results from the F-16XL-2 Supersonic Laminar Flow Control Experiment
Author: Laurie A. MarshallPublisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 58
Book Description
A variable-porosity suction glove has been flown on the F-16XL-2 aircraft to demonstrate the feasibility of this technology for the proposed High-Speed Civil Transport (HSCT). Boundary-layer transition data have been obtained on the titanium glove primarily at Mach 2.0 and altitudes of 53,000-55,000 ft. The objectives of this supersonic laminar flow control flight experiment have been to achieve 50- to 60-percent-chord laminar flow on a highly swept wing at supersonic speeds and to provide data to validate codes and suction design. The most successful laminar flow results have not been obtained at the glove design point (Mach 1.9 at an altitude of 50,000 ft). At Mach 2.0 and an altitude of 53,000 ft, which corresponds to a Reynolds number of 22.7 multiplied by 10[factor 6], optimum suction levels have allowed long runs of a minimum of 46-percent-chord laminar flow to be achieved. This paper discusses research variables that directly impact the ability to obtain laminar flow and techniques to correct for these variables.
NASA Technical Memorandum
Author: Fifty Years of Flight Research
Author: David F. FisherPublisher:
ISBN:
Category : Transportation
Languages : en
Pages : 526
Book Description
A bibliography of Technical Reports from Dryden Research Center, 1946-1996. Dryden was a National Advisory Committee for Aeronautics (NACA) facility from to 1946-1958, when NACA became NASA (National Aeronautics and Space Administration). This bibliography encompasses both NACA and NASA publications. Illustrated with diagrams and photos. Black and white version.
Natural Laminar Flow and Laminar Flow Control
Author: R.W. BarnwellPublisher: Springer Science & Business Media
ISBN: 1461228727
Category : Science
Languages : en
Pages : 415
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.