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Lifetime determination of ultralight helicopter blades

Autorzy
Treść / Zawartość
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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Determining the guaranteed operational time of helicopter blades is one of the important tasks necessary for successful vehicle use. Flight tests on different modes and special fatigue benches are used to solve such problems. The loads recorded during the flight are applied to ground tests on a bench. The ground fatigue tests of the ultralight helicopter blades have features associated with the influence of the scale factor comparison with the big helicopters. These features are presented in this article as the example of a ground test for a VA115 helicopter blade and a method of recalculating data. The purpose of these tests was to confirm the guaranteed service life of blades and define a reliable method for it.
Czasopismo
Rocznik
Strony
81--92
Opis fizyczny
Bibliogr. 17 poz.
Twórcy
  • Silesian University of Technology, Faculty of Mechanical Engineering; Akademicka 2A, 44-100 Gliwice
Bibliografia
  • 1. Dudnik, V. & Karabut, V. Ultralight and very light helicopter rotor data. Transactions on Aerospace Research. 2023. Vol. 271(2). P. 17-24.
  • 2. LTF–ULH. Bekanntmachung von Lufttüchtigkeitsforderungen für Ultraleichthubschrauber. Braunschweig: Deutsche Flugsicherung. [In German: Announcement of airworthiness requirement for ultralight helicopters. Braunschweig: German Air Traffic Control]. 2019. 61 p. Available at: https://www.dulv.de/sites/default/files/Downloads/ltf%20ul-hubschrauber%202019-02-28%20nfl%202-460-19.pdf.
  • 3. Rasuo, B. Experimental Techniques for Evaluation of Fatigue Characteristics of Laminated Constructions from Composite Materials: Full-Scale Testing of the Helicopter Rotor Blades. Journal of Testing and Evaluation. 2011. Vol. 39. No. 2. P. 237-242.
  • 4. Kee1, Y. & Kim1, S. & Han, J. & Jung, J. Resonant fatigue testing of full-scale composite helicopter rotor blades. In: 15th European Conference on Composite Materials. Venice. Italy. 2012. Available at: http://www.escm.eu.org/eccm15/data/assets/2474.pdf.
  • 5. Zheng, J. A flight load test method for helicopter rotor blade. International Journal of Mechanical Engineering and Applications. 2021. Vol. 9. No. 5. P. 75-78.
  • 6. Cooke, A. & Fitzpatrick, E. Helicopter test and evaluation. Oxford: Blackwell publishing. 2002. 370 р.
  • 7. Mil, M. Helicopters. Calculation and design. Volume II. Vibration and Dynamic Stability. Washington: National Aeronautic and Space Administration. 1968. 470 p. Available at: https://apps.dtic.mil/sti/pdfs/AD0683091.pdf.
  • 8. Feil, R. & Rinker, M. & Hajek, M. Flight testing of a coaxial ultralight rotorcraft. In: 73 Annual Forum of American Helicopter Society. Paper 89. Fort Worth, 2017. Available at: https://www.researchgate.net/publication/319618214_Flight_Testing_of_a_Coaxial_Ultralight_Rotorcraft.
  • 9. Rapp, C. & Wedemeyer, P. Measurement of in-flight rotor blade loads of an AutoGyro. In: 26 European Rotorcraft Forum. Hague. 2000. Available at: https://dspace-erf.nlr.nl/items/a6ef96c4-b131-4fdd-95ee-6dfb7d6ad90e.
  • 10. Dudnik, V. Determination of loads in the ultralight helicopter blades. Aviation. 2023. Vol. 27. No. 4. P. 242-247.
  • 11. Kee, Y. & Kim, S. & Han, J. & Jung, J. & Hur, J. High cycle fatigue life evaluation of damaged composite rotor blades. Transactions of the Korean Society of Mechanical Engineers A. 2012. Vol. 36. P. 1275-1282.
  • 12. Rand, O. & Khromov, V. Helicopter sizing by statistics. In: 58 Annual Forum of American Helicopter Society. Montreal, 2002.
  • 13. Rouault, T. & Nègre, V. & Bouvet, P. & Rauch, C. Study of the crack growth in composite rotor blade skin. In: 38 European Rotorcraft Forum. Amsterdam. 2012. Available at: https://dspace-erf.nlr.nl/items/399b5eca-bfcc-4c13-9318-94190a31b948.
  • 14. Jelaska, D. On the Goodman's fatigue safety factor. International Journal of Advanced Engineering. 2011. Vol. 5. P. 27-34. Available at: https://www.researchgate.net/publication/269695668_On_the_Goodman's_Fatigue_Safety_Factor.
  • 15. Стрижиус, В. Методы оценки усталостной прочности элементов композитны авиаконструкций. Москва: Машиностроение. 2015. 270 p. [In Russian: Strizhius, V. Methods for Assessing the Fatigue Strength of Composite Aircraft Structures, Moscow, Mashinostroenie].
  • 16. Brunbauer, J. & Stadler, H. & Pinter, G. Mechanical properties, fatigue damage and microstructure of carbon/epoxy laminates depending on fibre volume content. International Journal of Fatigue. 2015. Vol. 70. P. 85-92. Available at: https://www.sciencedirect.com/science/article/pii/S0142112314002126.
  • 17. Amraei, J. & Katunin, A. Recent advances in limiting fatigue damage accumulation induced by selfheating in polymer–matrix composites. Polymers. 2022. Vol. 14(24). No. 5384.
Uwagi
EN
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-90236b36-9d57-455f-9789-680ea46bbd36
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