A nonlinear model for the air-breathing flexible hypersonic vehicle (HSV) is provided giving consideration to the complex interactions between the propulsion system, aerodynamics, and structural dynamics. This nonlinear HSV is then approximated by a set of linear models over a large operating envelop, and a controller is synthesized using Linear Parameter Varying (LPV) techniques. Velocity trac...

The wind-driven dynamic manipulator is a device which uses the wind tunnel freestream energy to drive multiaxis maneuvers of test models. This paper summarizes work performed using the device in several applications and discusses current work on characterizing the aerodynamics of an X-38 vehicle model in pitch-yaw maneuvers. Previous applications in flow visualization, adaptive control and line...

Wheels and wheel houses contribute up to 25% of the total aerodynamic drag passenger cars interact in a complex way with their surroundings. Rims tires induce flow separation mechanisms highly unsteady regime proximity ground enhances these phenomena. To have clearer understanding that develop around wheels inside houses, effect tire deformation vehicle ride height on aerodynamics has been inve...

Trajectory tracking control for winged eVTOL aircraft is complicated by the high-angle-of-attack aerodynamics experienced during navigational flight occurring immediately after takeoff and before landing. The total energy use of vehicle can be reduced performance improved appropriately considering pitch angle in varying conditions. We present a review aerodynamic models as well an algorithm fin...

The Energy Saving Car Contest (KMHE) is a contest organized by the Ministry of Research, Technology and Higher Education (Kemenristekdikti). This among students to make national level fuel efficient vehicle. purpose designing this design produce an energy-efficient car body "Mataram Proto" vehicle that has good aerodynamic level. designed elegantly but still aerodynamics does not reduce safety ...

With the complex aerodynamics, accurate system model of flapping-wing micro aerial vehicle required for precise control is hard to acquire, meanwhile, due unique strategy, coupling between actuators also brings a great challenge vehicle. In this paper, we establish theoretical Based on model, propose multiaxial adaptive controller with reference generator attitude and altitude using backsteppin...

This paper presents the estimation of stability and control derivatives an unmanned aircraft. The aerodynamics are described using regressors composed velocity, angular rates, flow angles surface deflections. flight data is generated from numerical simulation postulated equations motion describing model. Least squares based on equation error method used to estimate parameters representing diffe...