Crack Propagation Tests for Load Sequences Developed Using Different Flight Parameters of a Trainer Aircraft

• Autorzy: Reymer Piotr , Kowalczyk Kamil , Baran Marta , Nowakowski Dominik , Dziendzikowski Michał , Leski Andrzej

Identyfikatory

DOI

10.2478/fas-2023-0010

• Języki publikacji: EN

Abstrakty

EN

Military aircraft are subjected to highly variable and unpredictable loads due to diverse mission profiles, armament configurations, and individual piloting styles. This variability complicates the definition of precise load spectra, particularly in cases where data loss occurs due to Flight Data Recorder (FDR) malfunctions or data mishandling. This paper investigates the use of different flight parameters, such as load factor (n_z), barometric height (H_b), and horizontal velocity (V_p), to define load sequences for the PZL-130 “Orlik” TC-II military trainer aircraft. These sequences were then used to evaluate crack propagation using Compact Tension (CT) specimens. The results show that the incorporation of additional flight parameters improves the accuracy of crack propagation predictions when compared to direct strain measurements. This study highlights the potential of using available flight data to develop reliable load spectra for fatigue life estimation in military aircraft, even when direct load measurements are not financially feasible.

Słowa kluczowe

EN

fatigue crack propagation; flight parameters; load sequence

• Wydawca: Wydawnictwa Naukowe Sieci Badawczej Łukasiewicz - Instytutu Lotnictwa
• Czasopismo: Fatigue of Aircraft Structures
• Rocznik: 2023
• Tom: Iss.15
• Strony: 155--165
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Reymer Piotr

• Air Force Institute of Technology, Ks. Bolesława 6, 01-494 Warsaw, Poland
• Military University of Technology, gen. Sylwestra Kaliskiego 2, 00-908 Warsaw, Poland

• https://orcid.org/0000-0002-5137-573X

autor

Kowalczyk Kamil

• Air Force Institute of Technology, Ks. Bolesława 6, 01-494 Warsaw, Poland

• https://orcid.org/0000-0002-3049-7949

autor

Baran Marta

• Air Force Institute of Technology, Ks. Bolesława 6, 01-494 Warsaw, Poland

• https://orcid.org/0000-0002-7532-0215

autor

Nowakowski Dominik

• Air Force Institute of Technology, Ks. Bolesława 6, 01-494 Warsaw, Poland

• https://orcid.org/0000-0002-3428-5089

autor

Dziendzikowski Michał

• Air Force Institute of Technology, Ks. Bolesława 6, 01-494 Warsaw, Poland

• https://orcid.org/0000-0003-2555-0052

autor

Leski Andrzej

• Military University of Technology, gen. Sylwestra Kaliskiego 2, 00 -908 Warsaw, Poland
• Lukasiewicz Research Network - Institute of Aviation, al. Krakowska 110/114, 02-256 Warsaw, Poland

• https://orcid.org/0000-0003-3006-8877

Bibliografia

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