Multiple-rotor Solution of Whirl Flutter Using MSC.NASTRAN

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F17%3AN0000141" target="_blank" >RIV/00010669:_____/17:N0000141 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.vzlu.cz/cz/transfer-vysledku/clanky-ve-sbornicich-d/" target="_blank" >http://www.vzlu.cz/cz/transfer-vysledku/clanky-ve-sbornicich-d/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Multiple-rotor Solution of Whirl Flutter Using MSC.NASTRAN

Popis výsledku v původním jazyce

This paper deals with whirl flutter analysis of turboprop aircraft structures. It gives the theoretical background of the whirl flutter phenomenon and aircraft certification-related issues. After that, standard and optimization-based analytical approaches are described. The focus is on a multiple-rotor solution, typically of a twin-engine aircraft using a full-span model. The necessary adjustments of a stick computational model and modification of the optimization-based solution are described. The methodology is demonstrated on the reference model of a twin engine turboprop commuter aircraft. The evaluated results include the available choices of both propeller rotation directions, i.e. identical (CW-CW) and inverse (CW-CCW).

Název v anglickém jazyce

Multiple-rotor Solution of Whirl Flutter Using MSC.NASTRAN

Popis výsledku anglicky

This paper deals with whirl flutter analysis of turboprop aircraft structures. It gives the theoretical background of the whirl flutter phenomenon and aircraft certification-related issues. After that, standard and optimization-based analytical approaches are described. The focus is on a multiple-rotor solution, typically of a twin-engine aircraft using a full-span model. The necessary adjustments of a stick computational model and modification of the optimization-based solution are described. The methodology is demonstrated on the reference model of a twin engine turboprop commuter aircraft. The evaluated results include the available choices of both propeller rotation directions, i.e. identical (CW-CW) and inverse (CW-CCW).

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20304 - Aerospace engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů