Investigation of influence of aircraft propeller modal parameters on small airplane performance

• Autorzy: Kilikevičius Arturas , Rimša Vytautas , Rucki Mirosław

Identyfikatory

DOI

10.17531/ein.2020.1.1

Warianty tytułu

PL

Badania wpływu modalnych parametrów śmigła na zachowanie małego samolotu

• Języki publikacji: EN

Abstrakty

EN

The aim of the current paper is to investigate a small airplane model propeller of class F2D according to requirements of Fédération Aéronautique Internationale (FAI, or World Air Sports Federation). In some cases, practical tests show that F2D models with flexible propellers produce specific extra noise and increase flight speed in comparison with “rigid” propellers. Therefore, the following hypothesis could be proposed: flexible characteristics of the increased noise are related to the resonant eigenfrequencies of the propeller. The operating range of the F2D class propeller (28,000-35,000 rpm) is close to or equal to the eigenfrequency resonance. The current investigation addresses dynamic/flexible vibrations of elastic propeller during engine run and researches dynamic parameters of the propeller as well as the contribution of these parameters to the model flight characteristics. To resolve this type of a problem, a stand, which allows completing a physical investigation of flexible propeller vibration modes and dynamic characteristics was created.

PL

Celem artykułu jest przedstawienie wyników badań śmigła małego modelu samolotu zaliczanego do klasy F2D (według klasyfikacji Fédération Aéronautique Internationale, FAI). W niektórych przypadkach testy wykazały, że modele F2 z giętkimi śmigłami, w porównaniu do śmigieł sztywnych, wydają dodatkowy hałas i zwiększają prędkość samolotu. Dlatego wysunięto hipotezę, że elastyczne charakterystyki zwiększonego hałasu są powiązane z rezonansem częstotliwości własnych śmigła. Zakres pracy śmigła klasy F2D (28 000-35 000 obr/min) jest zbliżony do jego częstotliwości własnych. Badania dotyczą elastycznych wibracji dynamicznych śmigła giętkiego w czasie rozruchu silnika i są nakierowane na wyznaczanie parametrów dynamicznych i ich wpływu na charakterystyki lotu modelu. Wykonano i opisano stanowisko, na którym przeprowadzono testy modalne drgań giętkiego śmigła. Na tej podstawie uzyskano charakterystyki dynamiczne.

Słowa kluczowe

EN

aircraft propeller; dynamics; vibration; operational modal analysis

PL

śmigło lotnicze; dynamika; wibracje; analiza modalna

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2020
• Tom: Vol. 22, no. 1
• Strony: 1--5
• Opis fizyczny: Bibliogr. 26 poz. rys., tab.

Twórcy

autor

Kilikevičius Arturas

• Institute of Mechanical Science, Vilniaus Gedimino Technical University, J. Basanaviciaus g. 28, Vilnius LT-03224, Lithuania

autor

Rimša Vytautas

• Department of Aviation Technologies, Vilniaus Gedimino Technical University, Linkmenų g. 28, Vilnius, LT-08217, Lithuania

autor

Rucki Mirosław

• Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom ul. Stasieckiego54, 26-600 Radom, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).