Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Petr Vrchota"'
Publikováno v:
Aerospace, Vol 6, Iss 3, p 34 (2019)
Inclusion of Active Flow Control (AFC) into Computational Fluid Dynamics (CFD) simulations is usually highly time-consuming and requires extensive computational resources and effort. In principle, the flow inside of the fluidic AFC actuators should b
Externí odkaz:
https://doaj.org/article/965d324818ca46f0993046b5c0c6319f
Autor:
Petr Vrchota, Łukasz Kiszkowiak, Jean-Georges Brévot, Georges Bridel, Jean Pierre Devaux, Zdobysław Goraj, Cezary Szczepański
Publikováno v:
Aircraft Engineering and Aerospace Technology. 93:1438-1444
Purpose The purpose of this paper is to reduce the exploitation cost below the standard supersonic training aircraft. The idea will benefit from the latest aerodynamic software and modern avionics, allowing to use much lighter trainer (due to using c
Publikováno v:
International Journal of Numerical Methods for Heat & Fluid Flow. 31:618-628
Purpose Some recent effort showed that usage of Krueger flaps helps to maintain laminar flow in cruise flight. Such flaps are positioned higher relative to the chord to shield the leading edge from the insect contamination during take-off. The flap p
Autor:
Julien Dandois, Hans Maseland, Mauro Minervino, Jochen Wild, Vitaly Soudakov, Petr Vrchota, Stefan Wallin, Fulvio Sartor
Publikováno v:
CEAS Aeronautical Journal
CEAS Aeronautical Journal, Springer, 2019, ⟨10.1007/s13272-019-00415-z⟩
CEAS Aeronautical Journal, Springer, 2019, ⟨10.1007/s13272-019-00415-z⟩
International audience; This paper will present the main results of the aerodynamic design and analysis for flow control applied to trailing edge of wings and profiles. This work has been conducted in the framework of the European project AFLoNext ai
Publikováno v:
Aircraft Engineering and Aerospace Technology. 91:346-352
Purpose In the European project AFLoNext, active flow control (AFC) measures were adopted in the wing tip extension leading edge to suppress flow separation. It is expected that the designed wing tip extension may improve aerodynamic efficiency by ab
Publikováno v:
II European Conference On Multifunctional Structures (EMuS 2020)
II European Conference On Multifunctional Structures
II European Conference On Multifunctional Structures
The article is discussing the final design of a VHF communication antenna integrated in a composite winglet of the EV-55 small transport aircraft. The antenna is designed to operate in the VHF band reserved for civil aviation, 117.975 – 137 MHz wit
Autor:
Marta Martinez-Vazquez, Victor Lungaho, Petr Vrchota, Z. Řezníček, K. Gonnet, Stefan Steeger, J. Balcells-Ventura
Publikováno v:
I European Conference On Multifunctional Structures
Scipedia
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The article is devoted to highlight the challenges, bottlenecks and possible solutions of VHF antenna integrated into a winglet from both the designer‘s and the airframer‘s perspective. We look into pros and cons specific for different antenna so
Autor:
Petr Vrchota, Aleš Prachař
Publikováno v:
CEAS Aeronautical Journal. 9:361-372
The NASA Common Research Model has been used for evaluation of the effect of the deformation of the model on aerodynamic forces and local flowfield. Large differences were observed during comparison of the results of the rigid model and experimental
Publikováno v:
Transportation Research Procedia. 29:366-375
A CFD study of a gust alleviation technique based on the use of aircraft’s control surfaces on the main wing and on the horizontal tail plane is presented. The NASA Common Research model of an airliner is used as the reference configuration. The gu
Autor:
Zdenek Reznicek, Stefan Steeger, Petr Vrchota, Marta Martinez-Vazquez, Jordi Balcells-Ventura, Victor Lungaho, Kai Gonet
Publikováno v:
2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting
This paper presents the preliminary design and integration of a notch antenna in an aircraft winglet. The antenna covers bandwidth reserved for VHF air traffic control.