Author: Lowell E. Reed
Publisher:
ISBN:
Category :
Languages : en
Pages : 70
Book Description
An Investigation of Methods for Predicting Stability for VTOL Aircraft During Transition
Author: Lowell E. Reed
Publisher:
ISBN:
Category :
Languages : en
Pages : 70
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 70
Book Description
An Analytical Study of Factors Influencing the Longitudinal Stability of Tilt-wing Vtol Aircraft
Author: G. Beppu
Publisher:
ISBN:
Category :
Languages : en
Pages : 108
Book Description
An analytical method for predicting the stability characteristics of tilt-wing VTOL aircraft in the transition speed range is presented. Sample calculations based on an assumed tilt-wing VTOL transport configuration of the XC-142A class with double slotted flaps are given. Particular emphasis is placed on the sensitivity of the results to various assumptions made in the analysis. The contributions of the various aircraft components and the aerodynamic interactions of the components to the stability derivatives are discussed, as well as the changes in the characteristic modes of motion of the vehicle that result from variations in the stability derivatives. The trim conditions of the vehicle are shown to be quite sensitive to the prediction of the flap characteristics. A limited comparison of the calculated results with experimental data obtained from a dynamic model of the XC-142A, which is somewhat dissimilar from the assumed configuration, is presented. This comparison indicates that the trends of the stability derivatives are correctly predicted. The agreement between theory and experiment is good in hovering; however, as the wing incidence is reduced, the difference between theory and experiment becomes quite large. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 108
Book Description
An analytical method for predicting the stability characteristics of tilt-wing VTOL aircraft in the transition speed range is presented. Sample calculations based on an assumed tilt-wing VTOL transport configuration of the XC-142A class with double slotted flaps are given. Particular emphasis is placed on the sensitivity of the results to various assumptions made in the analysis. The contributions of the various aircraft components and the aerodynamic interactions of the components to the stability derivatives are discussed, as well as the changes in the characteristic modes of motion of the vehicle that result from variations in the stability derivatives. The trim conditions of the vehicle are shown to be quite sensitive to the prediction of the flap characteristics. A limited comparison of the calculated results with experimental data obtained from a dynamic model of the XC-142A, which is somewhat dissimilar from the assumed configuration, is presented. This comparison indicates that the trends of the stability derivatives are correctly predicted. The agreement between theory and experiment is good in hovering; however, as the wing incidence is reduced, the difference between theory and experiment becomes quite large. (Author).
Predictive Methods for the Dynamic Response of a Quad Tilt-duct V/STOL Aircraft in Transition
Author: Irving Carl Statler
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 466
Book Description
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 466
Book Description
A Method for Predicting the Stability in Roll of Automatically Controlled Aircraft Based on the Experimental Determination of the Characteristics of an Automatic Pilot
Author: Robert Thomas Jones
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 20
Book Description
A method is suggested for predicting the stability of automatically controlled aircraft by a comparison of calculated frequency-response curves for the aircraft and experimentally determined frequency-response curves for the automatic pilot. The method is applied only to stabilization in roll. The method is expected to be useful as a means of establishing the specifications of the performance required of the automatic control devices for pilotless aircraft designed as missiles.
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 20
Book Description
A method is suggested for predicting the stability of automatically controlled aircraft by a comparison of calculated frequency-response curves for the aircraft and experimentally determined frequency-response curves for the automatic pilot. The method is applied only to stabilization in roll. The method is expected to be useful as a means of establishing the specifications of the performance required of the automatic control devices for pilotless aircraft designed as missiles.
An Analysis of Methods for Predicting the Stability Characteristics of an Elastic Airplane. Appendix B - Methods for Determining Stability Derivatives
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 674
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 674
Book Description
Flight Investigation of Stability and Control Characteristics of a 1/8-scale Model of a Tilt-wing Vertical-Take-Off-and-Landing (VTOL) Airplane
Author: Louis P. Tosti
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
Book Description
Prediction methods for jet V/STOL propulsion aerodynamics
Author: M. F. Platzer
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 548
Book Description
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 548
Book Description
U.S. Government Research & Development Reports
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1014
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1014
Book Description
Flight Investigation of the Longitudinal Stability and Control Characteristics of a Four-propeller Tilt-wing VTOL Model with a Programed Flap
Author: William A. Newsom
Publisher:
ISBN:
Category : Stability of airplanes
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Stability of airplanes
Languages : en
Pages : 32
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 892
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 892
Book Description