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Air Cushion Landing System Stability Study
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Book Synopsis Air Cushion Landing System Stability Study by : Thomas D. Burton
Download or read book Air Cushion Landing System Stability Study written by Thomas D. Burton and published by . This book was released on 1980 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of an inelastic ACLS plunge mode dynamic model is presented. The ACLS has unrestrained side elements and frozen end elements. The model exhibits unstable behavior at certain operating conditions for which the side elements are in contact with the ground. A linear analysis showed this instability to be due mainly to the altitude sensitivities of the cushion to atmosphere airflows and the attendant influence on the dynamic pressure forces on the vehicle. The model instability can be alleviated by isolating side and end elements so that they are all unrestrained and by simultaneously venting the air cushion directly to atmosphere. (Author).
Book Synopsis Landing-impact Studies of a 0.3-scale Model Air Cushion Landing System for a Navy Fighter Airplane by : Trafford J. W. Leland
Download or read book Landing-impact Studies of a 0.3-scale Model Air Cushion Landing System for a Navy Fighter Airplane written by Trafford J. W. Leland and published by . This book was released on 1975 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study was conducted in order to determine the landing-impact behavior of a 0.3-scale, dynamically (but not physically) similar model of a high-density Navy fighter equipped with an air cushion landing system. The model was tested over a range of landing contact attitudes at high forward speeds and sink rates on a specialized test fixture at the Langley aircraft landing loads and traction facility. The investigation indicated that vertical acceleration at landing impact was highly dependent on the pitch angle at ground contact, the higher acceleration of approximately 5g occurring near zero body-pitch attitude. A limited number of low-speed taxi tests were made in order to determine model stability characteristics. The model was found to have good pitch-damping characteristics but stability in roll was marginal.
Book Synopsis Experimental and Analytical Studies of Advanced Air Cushion Landing Systems by : E. G. S. Lee
Download or read book Experimental and Analytical Studies of Advanced Air Cushion Landing Systems written by E. G. S. Lee and published by . This book was released on 1981 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Analytical Studies of Advanced Air Cushion Landing Systems by :
Download or read book Experimental and Analytical Studies of Advanced Air Cushion Landing Systems written by and published by . This book was released on 1981 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Two-dimensional Air Cushion Landing System Peripheral Jet Configuration Study by : John R. Rogers (CAPT, USAF.)
Download or read book Two-dimensional Air Cushion Landing System Peripheral Jet Configuration Study written by John R. Rogers (CAPT, USAF.) and published by . This book was released on 1973 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heave-pitch-roll Analysis and Testing of Air Cushion Landing Systems by : Ashok B. Boghani
Download or read book Heave-pitch-roll Analysis and Testing of Air Cushion Landing Systems written by Ashok B. Boghani and published by . This book was released on 1978 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Cushion Landing Systems written by and published by . This book was released on 1972 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heave-pitch-roll Analysis and Testing of Air Cushion Landing Systems by : A. B. Boghani
Download or read book Heave-pitch-roll Analysis and Testing of Air Cushion Landing Systems written by A. B. Boghani and published by . This book was released on 1978 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pressure Distribution in an Air Cushion Landing System by : Robert Lee Weathers
Download or read book Pressure Distribution in an Air Cushion Landing System written by Robert Lee Weathers and published by . This book was released on 1972 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Air Cushion Landing Gear Applications Study by :
Download or read book Air Cushion Landing Gear Applications Study written by and published by . This book was released on 1979 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Air Cushion Landing Systems for Recovery of Unmanned Aircraft by : John M. Ryken
Download or read book A Study of Air Cushion Landing Systems for Recovery of Unmanned Aircraft written by John M. Ryken and published by . This book was released on 1972 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents results of a concept feasibility and formulation study of Air Cushion Landing Systems for recovery of unmanned aircraft (Remotely Piloted Vehicles). A modified Ryan Model 147G drone or special purpose aircraft was investigated for possible use in a low cost flight test demonstration of air cushion landing gear concepts on an existing unmanned aircraft. Recovery by horizontal landing on an air cushion landing system is compared with recovery with a mid-air recovery system. (Author).
Book Synopsis The Development and Flight Testing of the Xc-8a Air Cushion Landing System (acls) by David J. Perez by : David J. Perez
Download or read book The Development and Flight Testing of the Xc-8a Air Cushion Landing System (acls) by David J. Perez written by David J. Perez and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface Effect Take-Off and Landing System (SETOLS) Subsonic Static Stability Out of Ground Effect by : H. Dulany Davidson (Jr)
Download or read book Surface Effect Take-Off and Landing System (SETOLS) Subsonic Static Stability Out of Ground Effect written by H. Dulany Davidson (Jr) and published by . This book was released on 1972 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of a deployed air cushion landing gear on the stability of a high performance aircraft was studied at the Naval Ship Research and Development Center's 8 x 10 foot subsonic wind tunnel. Air cushion designs submitted by Bell Aerospace Corporation and Boeing were fitted to a ten percent scale A-4E and air cushions designed by Goodyear (two configurations), San Diego Aircraft Engineering Incorporated (SANDAIRE), and Bell were fitted to a ten percent scale F-8C. The effects of the air cushion landing gear ranged from minor destabilization, to very detrimental destabilization on both aircraft in the landing approach configuration. (Author).
Book Synopsis Research on the Stability of Air Cushion Systems by : University of Toronto. Institute for Aerospace Studies
Download or read book Research on the Stability of Air Cushion Systems written by University of Toronto. Institute for Aerospace Studies and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory of an Air Cushion Landing System for Aircraft by : Kennerly H. Digges
Download or read book Theory of an Air Cushion Landing System for Aircraft written by Kennerly H. Digges and published by . This book was released on 1970 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Air Cushion Landing System is a scheme to replace the wheeled landing gear on aircraft by a peripheral jet air cushion. The concept employs a flexible elastic membrane or 'trunk' which is attached to the bottom of the aircraft fuselage. During flight, the trunk shrinks elastically and hugs the bottom of the fuselage like a de-icing boot. When a flow of air is applied to the inside of the trunk, the elastic material stretches and forms an elongated doughnut-shaped protrusion on the underside of the aircraft. The air flow is ducted by the trunk to the fuselage periphery and exhausted through a large number of holes or slots. As a result, a pressure builds up under the aircraft when the ground is approached. The pressure is sufficient to support the aircraft and absorb its vertical landing velocity. The study develops analytical relationships between the variables associated with the Air Cushion Landing System. Included are the following: The derivation of a theory which predicts the static characteristics of the system; Analytical methods for predicting flow, jet height and power requirements; Curves which illustrate the interrelationships among the design variables; Computer programs for predicting the cross-sectional area and shape of the elastic trunk; The development and test of an analytical model which predicts the dynamic response of the system to landing impact; A discussion of the design considerations for the system.
Book Synopsis Two-Dimensional Air Cushion Landing System Peripheral Jet Confirmation Study by : John R. Rogers
Download or read book Two-Dimensional Air Cushion Landing System Peripheral Jet Confirmation Study written by John R. Rogers and published by . This book was released on 1973 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simplified two-dimensional peripheral jet theory for the equilibrium performance of an air cushion vehicle is investigated. The proposed theory intends to yield a rapid prediction of the actual flow rate and actual power requirements for an air cushion landing system in the hover condition. Nine specific nozzle configurations were tested to determine which resulted in the best power-height performance and whether the theory is able to predict the experimental performance. Three single peripheral jet configurations were tested at a trunk pressure of 80 psfg. Six distributed jet configurations were tested at a trunk pressure of 40 psfg. Effects of inward flow injection angles of 30 degrees and 60 degrees were investigated.
Book Synopsis Experimental and Analytical Studies of Advanced Air Cushion Landing Systems by :
Download or read book Experimental and Analytical Studies of Advanced Air Cushion Landing Systems written by and published by . This book was released on 1981 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
