Download or read book An Investigation of the Lateral Directional Dynamic Stability Characteristics of a Tilt Wing V STOL Transport Model in Simulated Low Speed Descending Flight written by William F. Putman and published by . This book was released on 1969 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: A O.1-scale dynamically similar model of the XC-142A V/STOL aircraft was tested in three degrees of lateral/directional freedom: roll, yaw, and sideslip. The test conditions simulated a full-scale aircraft with wing loading of 70 pounds per square foot (gross weight = 37,400 pounds), flying at approximately 40 knots at a wing incidence of 40 degress and flap deflection of 60 degrees. The simulated descent conditions encompassed level flight and four sink rates up to approximately 1,000 feet per minute equivalent full-scale sink rate. Time histories of the lateral/directional transient response of the model in one, two, and three degrees of freedom were measured. Pursuant to these experiments, the aerodynamic forces and moments acting on the model were measured as functions of the flight variables and model control displacements. The results of these tests defined the descent trim conditions and determined the model control effectiveness and control mixing requirements for this mid-transition flight condition. (Author).
Download or read book Investigation of Lateral directional Dynamic Stability of a Tilt wing V STOL Transport written by Joseph R. Chambers and published by . This book was released on 1970 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lateral-directional dynamic stability derivatives, characteristics, and handling qualities of tilt-wing V/STOL configuration.
Download or read book Technical Information Indexes written by United States. Naval Air Systems Command and published by . This book was released on 1975 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calculation of the Dynamic Longitudinal Stability of a Tilt wing V STOL Aircraft and Correlation with Model Flight Tests written by Joseph R. Chambers and published by . This book was released on 1968 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predictive Methods for the Dynamic Response of a Quad Tilt duct V STOL Aircraft in Transition written by Irving Carl Statler and published by . This book was released on 1970 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of the Longitudinal Dynamic Stability Characteristics of a Four propeller Tilt wing Vtol Model written by H. C Curtiss (Jr) and published by . This book was released on 1967 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of experiments conducted to evaluate the longitudinal stability characteristics of a 1/10 scale dynamic model of a four-propeller tilt-wing VTOL transport are presented and discussed. The Princeton Dynamic Model Track was used to measure the static stability and the transient response of the model at wing incidences from 90 degrees to 40 degrees. The results are interpreted in terms of full-scale aircraft characteristics. All data are presented for a C.G. position of 90% MAC (the most forward C.G. position of the aircraft is 15% MAC) and the horizontal tail and flap program differ from those presently used on the aircraft. The transient motions at wing incidences above 70 degrees were similar and dominated by high speed stability and low angular damping resulting in an unstable oscillation of approximately a 9-second period for the full-scale aircraft. The responses at wing incidences below 70 degrees were more complex due to a rapid decrease in the speed stability from a large positive value above 70 degrees to a negative value at 60 degrees. The values of the speed stability for the aircraft determined by a detailed analysis of the data in the neighborhood of 60 degrees wing incidence differ from those obtained from a preliminary analysis of the data by the LTV Aerospace Corporation. Typically, at wing incidences between 60 degrees and 40 degrees the linearized static stability derivatives M sub u and M sub alpha were small, nonlinearities were evident, and the small amplitude linearized motion was dominated by a divergence. At 40 degrees wing incidence, indications were that the dynamic motions were becoming stable. (Author).
Download or read book V STOL Dynamics Control and Flying Qualities written by James A. Franklin and published by . This book was released on 2000 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents materials that constituted the lectures presented by the author as part of Course AA 234 Dynamics, Control, and Flying Qualities of V/STOL Aircraft that was taught in the Department of Aeronautics and Astronautics at Stanford University. It covers representative operations of vertical and short takeoff and landing (V/STOL) aircraft, a discussion of the pilot's strategy in controlling these aircraft, the equations of motion pertinent to V/STOL tasks, and their application in the analysis of longitudinal and lateral-directional control in hover and forward flight. Following that development, which applies to the characteristics of the basic airframe and propulsion system, the text concludes with a discussion of the contributions of control augmentation in specific flight tasks and of the integration of modern electronic displays with these controls.
Download or read book Static and Dynamic Longitudinal Stability Derivatives of a Powered 1 9 scale Model of a Tilt wing V STOL Transport written by Joseph R. Chambers and published by . This book was released on 1966 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Lateral directional Stability Characteristics of a Four propeller Tilt wing Vtol Model written by Richmond P. Boyden and published by . This book was released on 1968 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of an experimental investigation to determine the lateral/directional stability characteristics of a four-propeller tilt-wing VTOL aircraft using a one-tenth scale dynamically similar model are presented. Test conditions include wing incidences of 89, 70, and 30 deg. Measurements of the transient motion of the model in the lateral/directional degrees of freedom and the static lateral/directional stability derivatives were made. The transient and steady-state data are analyzed assuming that the motions of the vehicle may be described by linearized equations, and the resulting static and dynamic derivatives are presented. The characteristics of the lateral/directional dynamic motion of the full-scale vehicle as predicted by the tests of the dynamically similar model are determined and discussed. All data are presented for a center-of-gravity position of 9-percent MAC, which is ahead of the most forward C.G. position of the aircraft (15-percent MAC), and the horizontal tail and flap programs differ from those presently used on the aircraft. (Author).
Download or read book Flight Investigation of Stability and Control Characteristics of a 1 8 scale Model of a Tilt wing Vertical Take Off and Landing VTOL Airplane written by Louis P. Tosti and published by . This book was released on 1960 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book USAF Stability and Control Datcom written by Douglas Aircraft Company and published by . This book was released on 1975 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Lateral directional Stability Characteristics of a Four propeller Tilt wing V stol Model in Low speed Steep Descent written by Daniel J. DiCarlo and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of Two Propeller Tilt Wing V STOL Aircraft Flight Characteristics written by and published by . This book was released on 1992 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of a two-propeller tilt wing aircraft static stability and performance simulation utilizing a NASA-Ames computer code, Tilt Wing Application General (TWANG), are presented with comparisons to actual test flight data. The Canadair CL-84 tilt wing aircraft was used as a model for the geometric data utilized by the computer simulation. Aerodynamic data for the simulation were obtained from previous NASA Ames research related to a four- propeller model. Variables used included a wide range of parameters associated with flight conditions from hovering flight to maximum cruise speeds at several different altitudes and wing tilt configurations. Longitudinal pitch stability was the driving factor in determining aircraft static stability for the various flight conditions. Results of the simulation indicate that the TWANG computer code provides an accurate prediction of both generic and specific tilt wing aircraft static pitch performance characteristics, as well as the additional capability of providing the required mathematical parameters for incorporation into the NASA Ames Vertical Motion Simulator as software inputs. Tilt Wing V/STOL aircraft, Twang, Tltwng, Longitudinal Pitch Attitude, Longitudinal Stick position, Elevator position.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1974 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Force test Investigation of the Stability and Control Characteristics of a Four propeller Tilt wing VTOL Model with a Programed Flap written by William A. Newsom and published by . This book was released on 1962 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of the Dynamic Stability Characteristics of a Quad Configuration Ducted propeller V stol Model Volume Iii Phase Iii Lateral directional Dynamics at High Duct Incidences written by William F. Putman and published by . This book was released on 1968 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of experiments to determine the lateral/directional dynamic stability characteristics of a quad configuration, ducted-propeller V/STOL aircraft at four low-speed/high-duct-incidence trim conditions (id = 80, 70, 60, and 50 deg) are presented. Lateral/directional transient responses in various degrees of freedom were measured using a dynamic model. The data presented include time histories of the model motions in various lateral/directional degrees of freedom that occur when the model is disturbed from trimmed flight. The dynamic model employed in these experiments is a generalized research model arranged to represent closely the Bell X-22A V/STOL aircraft. (Author).
Download or read book Low speed Measurements of Static and Oscillatory Lateral Stability Derivatives of a 1 5 scale Model of a Jet powered Vertical attitude VTOL Research Airplane written by Robert E. Shanks and published by . This book was released on 1960 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
