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 parameters estimation from subspace identification by constrained nonlinear optimization
Avcıoğlu, Sevil; Kutay, Ali Türker; Leblebicioğlu, Mehmet Kemal; Özkazanç, Yakup; Yavrucuk, İlkay (2019-01-01)
© Statement The authors confirm that they, and/or their company or organization, hold copyright on all of the original material included in this paper.Subspace identification uses well-understood techniques based on linear algebra and numerical methods. However, the state space model matrices which are obtained from conventional subspace identification algorithms are not necessarily associated with the physical states. This may be evaluated as a deficiency for the area of helicopter flight dynamics where ph...
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)
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.