Flight test and numerical analysis of a half-scale Unmanned Air Vehicle

1990 ◽  
Author(s):  
R. HOWARD ◽  
D. MEEKS ◽  
D. LYONS
Keyword(s):  
Numerical Analysis ◽  
Flight Test ◽  
Unmanned Air Vehicle ◽  
Air Vehicle

Trajectory Tracking Control for Micro Unmanned Aerial Vehicles

2013 ◽  
Vol 798-799 ◽  
pp. 448-451
Author(s):  
Rui Yong Zhai ◽  
Wen Dong Zhang ◽  
Zhao Ying Zhou ◽  
Sheng Bo Sang ◽  
Pei Wei Li
Keyword(s):  
Trajectory Tracking ◽  
Tracking Control ◽  
Kinematic Model ◽  
Flight Test ◽  
Guidance System ◽  
Test Results ◽  
Control Loop ◽  
Trajectory Tracking Control ◽  
Unmanned Air Vehicle ◽  
Air Vehicle

This article considers the problem of trajectory tracking control for a micro fixed-wing unmanned air vehicle (UAV). With Bank-to-Turn (BTT) method to manage lateral deviation control of UAV, this paper discusses the outer loop guidance system, which separates the vehicle guidance problems into lateral control loop and longitudinal control loop. Based on the kinematic model of the coordinated turning of UAV, the aircraft can track a pre-specified flight path with desired error range. Flight test results on a fixed-wing UAV have indicated that the trajectory tracking control law is quite effective.

scholarly journals Modeling the unstable DelftaCopter vertical take-off and landing tailsitter unmanned air vehicle in hover and forward flight from flight test data

2019 ◽  
Vol 11 ◽  
pp. 175682931988030 ◽  
Author(s):  
Christophe De Wagter ◽  
Joost Meulenbeld
Keyword(s):  
Test Data ◽  
Delta Wing ◽  
Flight Test ◽  
Model Parameters ◽  
Attitude Dynamics ◽  
Dynamics Model ◽  
Forward Flight ◽  
Plane Model ◽  
Unmanned Air Vehicle ◽  
Air Vehicle

The DelftaCopter is a tilt-body tailsitter unmanned air vehicle which combines a large swashplate controlled helicopter rotor with a biplane delta-wing. Previous research has shown that the large moment of inertia of the wing and fuselage significantly interacts with the dynamics of the rotor. While this rigid rotor cylinder dynamics model has allowed initial flight testing, part of the dynamics remains unexplained. In particular, higher frequency dynamics and the forward flight dynamics were not modeled. In this work, the cylinder dynamics model is compared with the tip-path plane model, which includes the steady-state flapping dynamics of the blades. The model is then extended to include the wing and elevon dynamics during forward flight. Flight test data consisting of excitations with a large frequency content are used to identify the model parameters using grey-box modeling. Since the DelftaCopter is unstable, flight tests can only be performed while at least a rate feedback controller is active. To reduce the influence of this active controller on the identification of the dynamics, one axis is identified at a time while white noise is introduced on all other axes. The tip-path plane model is shown to be much more accurate in reproducing the high-frequency attitude dynamics of the DelftaCopter. The significant rotor–wing interaction is shown to differ greatly from what is seen in traditional helicopter models. Finally, an Linear-Quadratic Regulator (LQR) controller based on the tip-path plane model is derived and tested to validate its applicability. Modeling the attitude dynamics of the unstable DelftaCopter from flight test data has been shown to be possible even in the presence of the unavoidable baseline controller.

Flight test of a half-scale unmanned air vehicle

1991 ◽  
Vol 28 (12) ◽  
pp. 843-848 ◽  
Author(s):  
R. M. Howard ◽  
J. C. Tanner ◽  
D. F. Lyons
Keyword(s):  
Flight Test ◽  
Unmanned Air Vehicle ◽  
Air Vehicle

scholarly journals Flight Test Result for the Ground-Based Radio Navigation System Sensor with an Unmanned Air Vehicle

Sensors ◽  
2015 ◽  
Vol 15 (11) ◽  
pp. 28472-28489 ◽  
Author(s):  
Jaegyu Jang ◽  
Woo-Guen Ahn ◽  
Seungwoo Seo ◽  
Jang Lee ◽  
Jun-Pyo Park
Keyword(s):  
Navigation System ◽  
Flight Test ◽  
Radio Navigation ◽  
Unmanned Air Vehicle ◽  
Air Vehicle ◽  
Radio Navigation System ◽  
Test Result

Unmanned Air Vehicle Flight Test using a Manned Surrogate Aircraft

2011 ◽  
Author(s):  
Timothy Jorris ◽  
Nathan Lehman ◽  
William Gray ◽  
Jay Kemper
Keyword(s):  
Flight Test ◽  
Unmanned Air Vehicle ◽  
Air Vehicle
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