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Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1979 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Book Induced Interference Effects on a Four jet VTOL Configuration with Various Wing Planforms in the Transition Speed Range

Download or read book Induced Interference Effects on a Four jet VTOL Configuration with Various Wing Planforms in the Transition Speed Range written by James H. Otis and published by . This book was released on 1962 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Aerodynamic Characteristics of a Large scale V STOL Transport Model with Tandem Lift Fans Mounted at Mid semispan of the Wing

Download or read book Aerodynamic Characteristics of a Large scale V STOL Transport Model with Tandem Lift Fans Mounted at Mid semispan of the Wing written by Stanley O. Dickinson and published by . This book was released on 1971 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Aeronautical Engineering

Download or read book Aeronautical Engineering written by and published by . This book was released on 1972 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).

Book Lift System Induced Aerodynamics of V STOL Aircrtaft in a Moving Deck Environment

Download or read book Lift System Induced Aerodynamics of V STOL Aircrtaft in a Moving Deck Environment written by James H. Kamman and published by . This book was released on 1978 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: The propulsive lift system induced aerodynamics of multi-jet VSTOL aircraft configurations were experimentally evaluated over a moving deck and at static hover conditions. Several model configurations representative of advanced subsonic and supersonic VSTOL aircraft were tested. Dynamic jet-induced force and moment data were obtained for heaving, pitching, and rolling motions of a simulated seaborne landing platform over a range of heights, amplitudes, and frequencies. Configuration effects were assessed at both static hover and deck motion conditions, including the effects of wing height, fuselage contouring, lift improvement devices, and nozzle arrangement. In addition, tests were performed to separate the effects of deck motion on the fountain impingement forces. Empirical procedures were defined to aid in predicting the dynamic jet- induced forces and moment variations with deck motion. Configuration design and model testing guidelines for VSTOL aircraft are described. Recommendations are also made for further research to provide additional information required to develop generalized prediction procedures.

Book Government Reports Announcements

Download or read book Government Reports Announcements written by and published by . This book was released on 1972-06-25 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Thrust Characteristics of Multiple Lifting Jets in Ground Proximity

Download or read book Thrust Characteristics of Multiple Lifting Jets in Ground Proximity written by Edwin E. Davenport and published by . This book was released on 1960 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation has been made to determine the thrust characteristics within ground proximity of a series of models which might represent vertical take-off-and-landing (VTOL) aircraft with multiple exit jet engines exhausting vertically downward beneath a lifting surface. Variations in simulated engine configurations were provided by a series of nozzle insert plugs in which the number of jet exits, located symmetrically on a fixed circle, was varied, or the diameter of the circle was varied for a given number of jet exits. represent lifting surfaces, and high-pressure air was used to simulate jet-engine exhaust. Plywood plates were used to The results of the investigation showed that increasing the number of exits, such that an annular jet configuration was approached, provided more favorable thrust characteristics within ground proximity than any other variation in the geometry of these multiple jets. Tests of a configuration with two nozzles approximating a fan-in-wing VTOL aircraft with fans located at different spanwise locations indicated that the augmentation in thrust within ground proximity was greater for the arrangement with the more inboard location of the nozzles.

Book Government Reports Announcements Index

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1972 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effect of Conventional and Square Stores on the Longitudinal Aerodynamic Characteristics of a Fighter Aircraft Model at Supersonic Speeds

Download or read book Effect of Conventional and Square Stores on the Longitudinal Aerodynamic Characteristics of a Fighter Aircraft Model at Supersonic Speeds written by William J. Monta and published by . This book was released on 1980 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Application of Empirical and Linear Methods to VSTOL Powered lift Aerodynamics

Download or read book Application of Empirical and Linear Methods to VSTOL Powered lift Aerodynamics written by and published by . This book was released on 1988 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Aerodynamic Characteristics of a JET VTOL Wing body Configuration in Transition Flight

Download or read book Aerodynamic Characteristics of a JET VTOL Wing body Configuration in Transition Flight written by Raymond Edward Mineck and published by . This book was released on 1975 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Aerodynamic Performance and Static Stability at Mach Number 3 3 of an Aircraft Configuration Employing Three Triangular Wing Panels and a Body Equal Length

Download or read book Aerodynamic Performance and Static Stability at Mach Number 3 3 of an Aircraft Configuration Employing Three Triangular Wing Panels and a Body Equal Length written by Carlton S. James and published by . This book was released on 1960 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: An aircraft configuration, previously conceived as a means to achieve favorable aerodynamic stability characteristics., high lift-drag ratio, and low heating rates at high supersonic speeds., was modified in an attempt to increase further the lift-drag ratio without adversely affecting the other desirable characteristics. The original configuration consisted of three identical triangular wing panels symmetrically disposed about an ogive-cylinder body equal in length to the root chord of the panels. This configuration was modified by altering the angular disposition of the wing panels, by reducing the area of the panel forming the vertical fin, and by reshaping the body to produce interference lift. Six-component force and moment tests of the modified configuration at combined angles of attack and sideslip were made at a Mach number of 3.3 and a Reynolds number of 5.46 million. A maximum lift-drag ratio of 6.65 (excluding base drag) was measured at a lift coefficient of 0.100 and an angle of attack of 3.60. The lift-drag ratio remained greater than 3 up to lift coefficient of 0.35. Performance estimates, which predicted a maximum lift-drag ratio for the modified configuration 27 percent greater than that of the original configuration, agreed well with experiment. The modified configuration exhibited favorable static stability characteristics within the test range. Longitudinal and directional centers of pressure were slightly aft of the respective centroids of projected plan-form and side area.