Identification of main helicopters resonances by ground vibration test

• Autorzy: Wiśniowski W.

Identyfikatory

DOI

10.5604/12314005.1165455

• Języki publikacji: EN

Abstrakty

EN

Six resonances of the helicopter body standing on the airport apron and at least two resonances of the free helicopters the frequencies of which are within the range of basic loadings by the helicopter rotor is called (8+) model. It was proposed to identify (8+) model with the use of resonance tests. It was indicated that (8+) model allows for detuning the resonances from the frequency of working loads, tracing the process of moving through resonances as well as taking off and landing. The paper presents: example of a helicopter on a test rig and visible vibrations inductors; induction of resonance vibrations, induction of resonance vibrations with the forms of pitching, yawing, rolling; induction of resonance vibrations with the forms of pitching with opposite pylon yawing and tipping with opposite pylon yawing; model of helicopter resonances; the multiplication of the resonance amplitude for various velocities of moving through with visible growth of the resonance frequency and reduction of vibrations amplitude; change of the frequencies at the taking off and landing.

Słowa kluczowe

EN

helicopter; resonance; modelling; ground vibration test

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2015
• Tom: Vol. 22, No. 2
• Strony: 287--291
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Wiśniowski W.

• Institute of Aviation Krakowska Avenue 110/114, 02-256 Warsaw, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Wiśniowski, W., Badania rezonansowe obiektów latających – metody i analiza wyników, Transactions of the Institute of Aviation, No. 209, Warsaw 2010.
• [2] Osiński, Z., Teoria drgań, PWN, Warszawa 1978.
• [3] Wiśniowski,W., Próby rezonansowe śmigłowca W-3, Sprawozdanie Instytutu Lotnictwa, Nr 18/RW-WZ/83.
• [4] Guła, P., Bezzałogowy śmigłowiec – robot do zadań specjalnych, Prace Instytutu Lotnictwa, Nr 219 (10/2011), str. 189-193, 2011.
• [5] Krzymień, W., Właściwości drganiowe wiatrakowca, VIII Krajowe Forum Wiropłatowe, Prace Instytutu Lotnictwa, Nr 219, Warszawa 2011.
• [6] Stanisławski, J., Experimental measurement and simulation calculations of loads In control system of helicopter rotor, Prace Instytutu Lotnictwa, Nr 238 (1/2015), pp. 35-53, 2015.