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  • 1
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    Preliminary X-43 flight test results (2005)
    Elsevier
    Details
    Publication Date: 2005-07-01
    Print ISSN: 0094-5765
    Electronic ISSN: 1879-2030
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Elsevier
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    PAPER CURRENT
  • 2
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    Experimental study of effects of forebody geometry on high angle-of-attack stability (1988)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Keywords: AIRCRAFT STABILITY AND CONTROL
    Type: Journal of Aircraft (ISSN 0021-8669); 25; 591-597
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Control research in the NASA high-alpha technology program (1990)
    In:  CASI
    Details
    Publication Date: 2017-10-02
    Description: NASA is conducting a focused technology program, known as the High-Angle-of-Attack Technology Program, to accelerate the development of flight-validated technology applicable to the design of fighters with superior stall and post-stall characteristics and agility. A carefully integrated effort is underway combining wind tunnel testing, analytical predictions, piloted simulation, and full-scale flight research. A modified F-18 aircraft has been extensively instrumented for use as the NASA High-Angle-of-Attack Research Vehicle used for flight verification of new methods and concepts. This program stresses the importance of providing improved aircraft control capabilities both by powered control (such as thrust-vectoring) and by innovative aerodynamic control concepts. The program is accomplishing extensive coordinated ground and flight testing to assess and improve available experimental and analytical methods and to develop new concepts for enhanced aerodynamics and for effective control, guidance, and cockpit displays essential for effective pilot utilization of the increased agility provided.
    Keywords: AIRCRAFT STABILITY AND CONTROL
    Type: AGARD, Aerodynamics of Combat Aircraft Controls and of Ground Effects; 18 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Flight dynamics research for highly agile aircraft (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: This paper highlights recent results of research conducted at the NASA Langley Research Center as part of a broad flight dynamics program aimed at developing technology that will enable future combat aircraft to achieve greatly enhanced agility capability at subsonic combat conditions. Studies of advanced control concepts encompassing both propulsive and aerodynamic approaches are reviewed. Dynamic stall phenomena and their potential impact on maneuvering performance and stability are summarized. Finally, issues of mathematical modeling of complex aerodynamics occurring during rapid, large amplitude maneuvers are discussed.
    Keywords: AIRCRAFT STABILITY AND CONTROL
    Type: SAE PAPER 892235
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Use of the updated NASA Langley radio-controlled drop-model technique for high-alpha studies of the X-29A configuration (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: This paper presents an overview of the radio-controlled drop-model technique used for low-speed flight dynamics research at the NASA Langley Research Center. The overall test methodology is reviewed and the major elements of the system are discussed including model construction and equipment, the closed-loop control system, and the flight test facility. To illustrate the capabilities of the technique, selected results from an ongoing program to study the high-angle-of-attack flight dynamics of the X-29A configuration are reviewed. Three research areas are highlighted: motion prediction, control system effects, and motion analysis and modeling. Finally, several current upgrades to the overall technique are discussed along with the enhanced test capability that they will provide.
    Keywords: AIRCRAFT STABILITY AND CONTROL
    Type: AIAA PAPER 87-2559
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Impact of emerging technologies on future combat aircraft agility (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The foreseeable character of future within-visual-range air combat entails a degree of agility which calls for the integration of high-alpha aerodynamics, thrust vectoring, intimate pilot/vehicle interfaces, and advanced weapons/avionics suites, in prospective configurations. The primary technology-development programs currently contributing to these goals are presently discussed; they encompass the F-15 Short Takeoff and Landing/Maneuver Technology Demonstrator Program, the Enhanced Fighter Maneuverability Program, the High Angle-of-Attack Technology Program, and the X-29 Technology Demonstrator Program.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: AIAA PAPER 90-1304
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Development of a preliminary high-angle-of-attack nose-down pitch control requirement for high-performance aircraft (1990)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The requirements for high-angle-of-attack nose-down pitch control for advanced high-performance aircraft are discussed. Background information on fundamental factors that influence and, to a large extent, determine the high angle-of-attack nose-down control requirement is briefly reviewed. Guidelines currently proposed by other sources which attempt to define these requirements are discussed. A requirement based on NASA analysis of the characteristics of existing relaxed static stability (RSS) aircraft is presented. This analysis could provide the basis for a preliminary design guide.
    Keywords: AERODYNAMICS
    Type: NASA-TM-101684 , NAS 1.15:101684
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Review of X-43A Return to Flight Activities and Current Status (2004)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This paper provides an overview and status of the return to flight activities for the X-43A scramjet flight demonstrator after the first flight mishap. The first flight was attempted on June 2, 2001 and resulted in vehicle destruction by range safety when the booster went out of control early in the flight. In the time since the mishap much work has been done to examine the causes of the failure and make modifications to the booster to insure that the boost for the second flight will be successful. In addition, all other aspects of the flight have been examined to maximize the probability of a successful flight.
    Keywords: General
    Type: AIAA Paper 2003-7085 , AIAA 12th International Space Planes and Hypersonic Systems and Technologies Conference; Dec 15, 2003 - Dec 19, 2003; Norfolk, VA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Modeling of large-amplitude high-angle-of-attack maneuvers (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Results from a simulation study to characterize and model rapid, large-amplitude high-angle-of-attack maneuvers of high performance aircraft are summarized. There is concern that conventional aerodynamic math models combining static and small-amplitude demping data may be deficient in properly representing the associated aerodynamics to allow accurate prediction of these types of motion. The objectives of this investigation were: (1) to characterize these maneuvers in order to establish the aerodynamic modeling requirements, (2) to define refinements to address these requirements, and (3) to examine the impact of these refinements on the calculated motions. The results show that accurate modeling of the dynamic terms is vital due to the very high angular rates generated during these maneuvers. It was found that the addition of dynamic terms to include the lateral acceleration derivatives and the rotary aerodynamics can in some cases significantly affect the simulated flight motions.
    Keywords: AIRCRAFT STABILITY AND CONTROL
    Type: AIAA PAPER 88-4357 , AIAA Atmospheric Flight Mechanics Conference; Aug 15, 1988 - Aug 17, 1988; Minneapolis, MN; United States
    Format: text
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    NASA TECHNICAL REPORTS
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