Helicopter Sizing for the Turkish Market Using Concurrent Engineering Tools



Helicopter Design for Handling Qualities Enhancement
Yavrucuk, İlkay (2009-09-22)
This research aims to bring HQ's (Handling Qualities) assessment according to ADS-33E-PRF into early stages of helicopter design process, namely late conceptual and early preliminary design phase. Effects of three design parameters, namely disc loading, rotor tip speed and blade loading coefficient, on bandwidth phase delay criterion of the ADS-33E-PRF for pitch channel is investigated for the hover condition flown by a 10 degrees of freedom Bo-105 like simulation model. After setting practical design const...
Helicopter lobed nozzle optimization with differential evolution method
Bayat, Akay; Perçin, Mustafa; Department of Aerospace Engineering (2021-2-11)
The main purpose of this study is to develop a methodology for the optimization of an ejector system geometry that is used for the helicopter engine bay cooling. The performance of an ejector system is directly related to the entrainment ratio, which is the ratio of the secondary flow rate to the primary flow rate, and the turbine exit backpressure. In the literature, it is observed that the nozzle geometry used in the ejector system has a significant effect on the performance and that the most efficient ge...
Helicopter Slung Load Simulations Using Heli-Dyn+
Yavrucuk, İlkay (null; 2013-08-13)
This paper demonstrates a fast and convinent way to model the dynamics of a helicopter with a slung load. A new software tool called Heli-Dyn+ is used to generate high fidelity helicopter math models. One of the benefits of Heli-Dyn+ is that helicopter math models can be exported as dynamic libraries into different software environments. In this paper we develop a generic 3-DOF slung load dynamic model in MATLAB/Simlulink. Then the slung load model is integrated with a nonlinear 6-DOF helicopter model expor...
Aircraft Programs in Turkish Aerospace and Human Resources Demand
Özgen, Serkan (null; 2019-09-18)
Airplane Localization in Satellite Images by using Visual Attention
Ozyer, Gulsah Tumuklu; Yarman Vural, Fatoş Tunay (2013-04-26)
Automatic target detection from the satellite images is an important tool for various applications including mapping, city planning and defense industry. In this paper, we propose a new two-stage method to identify the airplane regions in the airport images by using visual attention. In the first stage, the interesting patches in the image is aimed to extract from the high resolution images. For that purpose, Itti-Koch visual attention model which is inspired from human vision system is used. In the second ...
Citation Formats
İ. Yavrucuk, “Helicopter Sizing for the Turkish Market Using Concurrent Engineering Tools,” 2009, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/84454.