Computational modeling of applied tasks of helicopter aerodynamics based on non-linear vortical model of a rotor

Аuthors

Ignatkin Y. M.^1*, Makeev P. V.^**, Shomov A. I.^2***

1. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
2. National Helicopter Center Mil & Kamov, 26/1, Garshina str., Tomilino, Moscow region, 140070, Russia

*e-mail: k102@mai.ru; ignatkinym@mai.ru
**e-mail: vaultcity13@gmail.com
***e-mail: shomov_aleksandr@mail.ru; a.shomov@nhc.aero

Abstract

Computational modeling and problem solving in the field of aerodynamics -so called ‘computational experiment’ recently has become more and more actual in design of aircrafts and its modernization. This happens, first of all, due to rapidly growing possibilities of computing techniques, which give a chance to implement mathematic models, adequately reflecting complex physical processes of flow-around of aircrafts’ different lements

Using of modern methods of computational modeling in problem solving for aircraft aerodynamics lets amplify and partly even replace hard expensive experiments in a wind tunnel and flight tests with security risks.

The article contains review of possibilities and demonstration of practical examples of using non-linear blade vortical free-wake model of helicopter rotor and its software algorithmic implementation created in Helicopter Design Department of MAI.

Model and software provide an opportunity to calculate parameters for main, tail and propulsion helicopter rotors and their combinations considering interference, getting full aerodynamic characteristics and rotors’ flows schemes, including special regimes, when vortical wave is significantly non-linear.

Model and software are used to solve various applications tasks of helicopter rotors’ aerodynamics. Research is carried out for the benefit of industry players. The results of research are included into academic activity of Helicopter Design Department of MAI.

Keywords:

non-linear vortical model, software implementation, helicopter rotors, vortical wake, flow visualization, aerodynamic characteristics, rotor geometry, rotors’ interference

References

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