Evaluation of visual cues of three dimensional virtual environments for helicopter simulators

Download

index.pdf

Date

2008

Author

Çetin, Yasemin

Metadata

Show full item record

Item Usage Stats

254
views

228
downloads

Flight simulators are widely used by the military, civil and commercial aviation. Visual cues are an essential part of helicopter flight. The required cues for hover are especially large due to closeness to the ground and small movements. In this thesis, density and height parameters of the 3D (Three Dimensional) objects in the scene are analyzed to find their effect on hovering and low altitude flight. An experiment is conducted using a PC-based flight simulator with three LCD monitors and flight control set. Ten professional military pilots participated in the experiment. v Results revealed that object density and object height are effective on the horizontal and vertical hovering performance. There is a peak point after which increasing the density does not improve the performance. In low altitude flight, altitude control is positively affected by smaller object height. However, pilots prefer the scenes composed of the high and mixture objects while hovering and flying at low altitude. Distance estimation is affected by the interaction of the object density and height.

URI

http://etd.lib.metu.edu.tr/upload/2/12610100/index.pdf
https://hdl.handle.net/11511/18005

Collections

Graduate School of Informatics, Thesis

Suggestions

OpenMETU
Core

Design and evaluation of a helicopter main rotor electrohydraulic control system Düzağaç, Hasan Ali; Çalışkan, Hakan; Balkan, Raif Tuna; Department of Mechanical Engineering (2022-8-26) Helicopters are widely used aircrafts for several purposes. Main Rotor of a Helicopter creates necessary flight forces for performing flight operation. Orientation of a Helicopter Rotor System is determined and controlled manually by pilot and automatically by automatic control system via hydraulically operated flight control actuators. In this research, a novel electrohydraulically operated helicopter main rotor control system is mathematically designed and developed to improve overall performance of contr...
Mathematical model and autopilot design of a twin engine jet plane Atak, Hazal Cansu; Leblebicioğlu, Mehmet Kemal; Department of Electrical and Electronics Engineering (2020) Fighter aircrafts have very important place in military and aerospace industry. Lots of types of these aircrafts are used according to their primary missions like providing fire power from high above the ground and support for ground forces. Selecting the number of engines and their type are dependent to these missions. Turbojet, turbo prop and ramjet engines are most preferred types for these applications, and each has its own advantages and disadvantages. Turbojet engines have high performance as a means ...
Dynamic modeling and control of an electromechanical control actuation system Yerlikaya, Ümit; Balkan, Raif Tuna; Department of Mechanical Engineering (2016) Electromechanical simulators, actuators are widely used in miscellaneous applications in engineering such as aircrafts, missiles, etc. These actuators have momentary overdrive capability, long-term storability and low quiescent power/low maintenance characteristics. Thus, electromechanical actuators are applicable option for any system in aerospace industry, instead of using hydraulic actuators. In the same way, they can be used in control actuation section of missiles to deflect flight control surfaces. Mo...
Investigation of fretting fatigue failure mechanism of lug-bush connection members Özen, Emine Burçin; Çöker, Demirkan (Elsevier BV; 2019-01-01) Lug-bush connection members are widely used in aerospace industry, specifically in the connection of rotor to helicopter main body. Under small amplitude cyclic loadings, a fraction of the contact area experiences relative motion which causes fretting on the contacting surfaces. In this study, failure mechanisms of four different lug-bush members subjected to high cycle tensile fatigue loading are investigated. The contact surfaces are inspected using a digital microscope and a scanning electron microscope ...
Modeling and simulation of a small-sized Tiltrotor UAV Çakıcı, Ferit; Leblebicioğlu, Mehmet Kemal (2012-10-01) Unmanned aerial vehicles (UAVs) are remotely piloted or self-piloted aircrafts that can carry cameras, sensors, communication equipment and other payloads. Tiltrotor UAVs provide a unique platform that fulfills the needs for ever-changing mission requirements, by combining the desired features of hovering like a helicopter and reaching high forward speeds like an airplane, which might be a force multiplier in the battlefield. In this paper, the conceptual design and aerodynamical model of a realizable small...

Citation Formats

Y. Çetin, “Evaluation of visual cues of three dimensional virtual environments for helicopter simulators,” M.S. - Master of Science, Middle East Technical University, 2008.