Acoustical flight path tracking of echolocating bats

1996 ◽  
Vol 100 (4) ◽  
pp. 2709-2709 ◽  
Author(s):  
Roland Aubauer
Keyword(s):  
Path Tracking ◽  
Flight Path

scholarly journals Flight-Path Tracking Control of an Aircraft Using Backstepping Controller

2015 ◽  
Vol 15 (2) ◽  
pp. 270
Author(s):  
Labane Chrif ◽  
Zemalache Meguenni Kada ◽  
Tahar Mohamed
Keyword(s):  
Linear Models ◽  
Equations Of Motion ◽  
Path Tracking ◽  
Flight Path ◽  
Primary Control ◽  
Feedback Form ◽  
Nonlinear Simulation ◽  
Stabilizing Controller ◽  
External Loop ◽  
Highly Nonlinear

For transportation aircraft, the primary control objective for an autopilot system engaged during approach and landing is relative to the flight path tracking on the basis of highly simplified linear models of flight dynamics. The dynamics governing the flight path of an aircraft are in general highly nonlinear and involve complex physics for which no accurate models are available. In this paper a nonlinear model describing the longitudinal equations of motion in strick feedback form is derived. Backstepping is utilized for the construction of a globally stabilizing controller with a number of free parameters. It is implemented a controller with an internal loop controls involving the pitch rate of the aircraft and an external loop which includes angle of attack, path angle and pitch angle. Finally, nonlinear simulation results for a longitudinal model of a transportation aircraft are displayed and discussed.

3-D Flight Path Tracking Control for Unmanned Aerial Vehicles Under Wind Environments

2019 ◽  
Vol 68 (12) ◽  
pp. 11621-11634 ◽  
Author(s):  
Kazuo Tanaka ◽  
Motoyasu Tanaka ◽  
Yutoku Takahashi ◽  
Arimasa Iwase ◽  
Hua O. Wang
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Tracking Control ◽  
Path Tracking ◽  
Flight Path ◽  
Aerial Vehicles

Accurate flight path tracking control for powered parafoil aerial vehicle using ADRC-based wind feedforward compensation

2019 ◽  
Vol 84 ◽  
pp. 904-915 ◽  
Author(s):  
Shuzhen Luo ◽  
Qinglin Sun ◽  
Wannan Wu ◽  
Mingwei Sun ◽  
Zengqiang Chen ◽  
...  
Keyword(s):  
Tracking Control ◽  
Path Tracking ◽  
Flight Path ◽  
Aerial Vehicle ◽  
Powered Parafoil

scholarly journals Attitude Indicator Format

2019 ◽  
Vol 9 (2) ◽  
pp. 95-105 ◽  
Author(s):  
Simon Müller ◽  
Fabienne Roche ◽  
Dietrich Manzey
Keyword(s):  
Path Tracking ◽  
Flight Path ◽  
The Other ◽  
Flight Safety ◽  
Simulator Study ◽  
Reversal Errors

Abstract. A simulator study investigated the consequences of a transition between two alternative formats of the attitude indictor in aircraft cockpits, the moving-horizon and moving-aircraft format. Two groups of novices practiced performing two flight tasks (flight-path tracking and recovery from unusual attitudes) with one attitude-indicator format for six practice sessions, before transitioning to the other format. The results show that, after practice, participants were able to perform both tasks equally well with both attitude-indicator formats. However, the number of reversal errors in the recovery task increased considerably when transitioning from the moving-aircraft to moving-horizon format. No such effect emerged for the other direction. This suggests that the former transition is more difficult and represents a possible risk for flight safety.

Costs and Benefits of Head-Up Display Use: A Meta-Analytic Approach

1998 ◽  
Vol 42 (1) ◽  
pp. 16-20 ◽  
Author(s):  
Steven Fadden ◽  
Patricia May Ververs ◽  
Christopher D. Wickens
Keyword(s):  
Event Detection ◽  
Path Tracking ◽  
Detection Performance ◽  
Flight Path ◽  
Analytic Approach ◽  
Costs And Benefits ◽  
Tracking Accuracy ◽  
Pilot Performance ◽  
Potential Cost ◽  
Display Location

Costs and benefits associated with head-up display (HUD) use were assessed by analyzing data obtained from studies in the aviation domain. Eighteen studies investigating the use of HUDs, head-down displays, and conformal displays were included in analyses of flight path tracking and event detection performance. HUD and conformality benefits consisted of faster detection responses to changes in symbology and presentation of traffic, as well as increased flight path tracking accuracy. Further investigation into the HUD data revealed a heterogeneous component, suggesting that factors other than display location were contributing to pilot performance. One factor modulating performance was the relative expectancy of the event. HUD use was advantageous if an event in the environment was expected. However, when an event was unexpected, detection was degraded with the presence of HUD instrumentation. This finding reveals a potential cost due to HUD use when confronted with anomalous situations.

Motion Relationships in Aircraft Attitude and Guidance Displays: A Flight Experiment

1975 ◽  
Vol 17 (4) ◽  
pp. 374-387 ◽  
Author(s):  
Stanley N. Roscoe ◽  
Robert C. Williges
Keyword(s):  
Angular Acceleration ◽  
Path Tracking ◽  
Flight Path ◽  
Tracking Task ◽  
Frequency Separation ◽  
Initial Direction ◽  
Flight Experiment ◽  
Pursuit Tracking ◽  
Vestibular Cues

Sixteen nonpilot Naval ROTC students were tested on tasks involving conflicting visual and vestibular cues while flying with each of four basic aircraft attitude presentations (moving horizon, moving airplane, frequency-separated, and kinalog) in a Beechcraft C-45H airplane. Flight-director versions of each display presenting either compensatory or pursuit steering guidance were also compared on a command flight path tracking task involving random heading changes. For all attitude presentations, pursuit tracking was superior to compensatory tracking and the order of merit of the four attitude presentations in flight casts doubt upon the validity of previous simulator experiments. It was concluded that the principle of display frequency separation provides at least equivalent pilot steering performance to that obtained with the conventional moving horizon format, while the anticipatory cues it affords tends to reduce the incidence of control reversals under circumstances of subliminal angular acceleration by providing initial direction-of-motion compatibility.

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