Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 26 for “"sideslip"”.
-
Development of an automatic sideslip control for aircraft,
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1945
-
The prediction of aerodynamic force and moment coefficients on elliptic cone bodies at both angle of attack and sideslip by use of Newtonian impact theory
… elliptic cone segment at angles of attack and sideslip. Closed form expressions for the aerodynamic coefficients and static stability derivatives were obtained. Expressions for the full and half conic bodies were given and approximate expressions were given for the half cone case. The circular …
-
Compound Aircraft Transport: Wingtip-Docked Flight Compared to Formation Flight
… analyze the stability issues linked with sideslip angle as seen by the Tom Tom Project test pilot, when he entered docking maneuvers with 5 degrees yaw to simulate a ``tired pilot". The wingtip-docked system was determined to have an unstable aperiodic mode for sideslip angle greater than …
-
A Methodology for the Prediction of the Empennage In-Flight Loads of a General Aviation Aircraft Using Backpropagation Neural Networks
… data acquisition system for dutch-roll, roll, sideslip left, sideslip right, stabilized g turn left, stabilized g turn right, and push-pull maneuvers at airspeeds of 65 KIAS, 80 KIAS, and 95 KIAS. The sensor signals were filtered and used to train the neural networks. Modular Neural Networks …
-
Active driveline and suspension control to improve vehicle handling
… handling. Vehicle stability is determined by the sideslip behaviour of the vehicle, where the controllers aim to minimise the sideslip. The testing is achieved by computer simulation. An eight degree of freedom nonlinear vehicle model is developed to model the University of Leeds Formula Racing …
-
Propellers in yawed flow at low speeds
… thrust, and the normal force produced from the sideslip angle were all measured. It was observed that at small angles of yaw, the variation in performance was minimal, yet a dramatic increase was witnessed at angles greater than 15 deg.
-
Structural Design of a Business Jet Winglet
… the winglet, found to be negative and positive sideslip and gust. A finite element model was developed and used to size the structure. A fabrication process and assembly is described and the weight was estimated to be 22.5 kg which is less than the estimated weight. Thus the performance of the …
-
Integrated vehicle dynamics control using active steering, driveline and braking
… which correspond to yaw rate tracking and sideslip motion bounding, respectively. Active steering subsystem controllers and dynamic stability subsystem controller are designed by using the Sliding Mode Control (SMC) technique and phase-plane method, respectively. The former is used as the …
-
Optimized Engine Out Procedures to Extend the Range of Jet Transport Airplanes
… the drag force coefficient obtained at the sideslip position that occurs due to an engine failure with the drag force coefficient obtained at the wings level condition for each airplane, the amount that their specific range will increase was determined.</p>
-
High Angle of Attack Forebody Flow Physics and Design Emphasizing Directional Stability
… of attack conditions with special emphasis on sideslip has been established. Computational Fluid Dynamics (CFD) has been used to study flowfields over experimentally investigated forebodies: the Lament tangent-ogive forebody, the F-5A forebody and the Erickson chine forebody. A modified version …
-
Dynamics and control of robotic aircraft with articulated wings
… dihedral angles alone can e ffectively regulate sideslip during rapid turns and generate a wide range of equilibrium turn rates while maintaining a constant flight speed and regulating sideslip. We compute the turning performance limitations that arise due to the use of wing dihedral for yaw …
-
Aerodynamics of a chined forebody oscillating in pitch
… to 52$\sp\circ$ angle of attack without sideslip. The effects of reduced frequency as well as free-stream Reynolds number were investigated by running a range of tunnel velocity/model oscillation frequency combinations. Reynolds numbers, based on the 3-inch base diameter of the forebody, …
-
Steady and Unsteady Maneuvering Forces and Moments on Slender Bodies
… been measured at static angles of attack and sideslip and unsteady pitch ramp maneuvers at a fixed point of rotation at the quarter length of the body. The two bodies are the DARPA Suboff generic submarine shape and a non-Body-of-Revolution scalene ellipsoid with a constant cross-section …
-
Driver behavior classification and lateral control for automobile safety systems
… two-wheel vehicle dynamic model is employed. The sideslip angle and the yaw rate are estimated by discrete Kalman Filter. A time independent piecewise optimization scheme is proposed to provide time-continuous estimates of longitude tire force, which can be transferred to the throttle/brake pedal …
-
Adaptive control of a generic hypersonic vehicle
… value, and sensor bias of +1.6 degrees on sideslip angle measurement. The closed-loop reference model adaptive controller maintains at least 73% of the delay margin provided by the robust baseline design, tolerating input time delays of between 18-46 ms during 3 degree angle of attack …
-
Robust bifurcation behavior in the presence of external random excitation
… of aircraft at large angles of attack and sideslip in a turbulent atmosphere. A qualitative criterion for robust bifurcation behavior is suggested and it is found the bifurcation behavior of systems with one critical mode is robust in the sense that the deterministic characteristics carry …
-
Dynamics and Control of Flexible Aircraft
… in terms of three translations (forward motion, sideslip and plunge) and three rotations (roll, pitch and yaw) of a reference frame attached to the undeformed fuselage, and acting as aircraft body axes, and elastic displacements of each of the flexible components relative to corresponding body …
-
Control power requirements for the velocity vector roll
… angle of attack, constant velocity, and zero sideslip. A simplified set of equations is developed for the non dimensional control moments about the three principal body axes. These equations take on a form well suited for numerical optimization methods. The Schittkowski sap optimization code …
-
Development and analysis of active rear axle steering for 8x8 combat vehicle
… angle and compares the vehicle yaw rate and sideslip angle to the desired values calculated at steady state. These controllers are evaluated by performing simulations using a previously validated 8x8 combat vehicle as a TruckSim© full vehicle model. The controllers are developed in …
Page 1 of 2