Research on Hovercraft – Fatigue Cracks in the Engine Frame

Author:

Szafran Krzysztof Stanisław1ORCID,Michalczyk Marcin1ORCID

Affiliation:

1. Łukasiewicz Research Network – Institute of Aviation , Al. Krakowska 110/114 , Warsaw , Poland

Abstract

Abstract Rescue patrol hovercrafts must meet the basic condition – high reliability of use in extreme conditions. The introduction to the work shows damage to the propulsion system and the fan tunnel structure resulting from a fatigue fracture of the attachment wound to the propulsion unit hull. In this paper, the author describes some ways of improving the engine frame structure. In the first phase of the exploitation crack testing of the hovercraft frame, the probable causes of damage were determined. The necessary output data for analysis of the load course were obtained from the operating documentation. The approximate number of variable load cycles acting on the frame truss rod was determined. Using the comparative testing methods, the service life of the frame was estimated. Probable resonance frequencies of the vibrating bars in the truss were determined. Vibration tests of the power transmission assemblies were carried out, which allowed to determine the amplitudes and frequencies of free vibrations. Finally, a modification of the frame shifting the resonant frequency range was proposed. In conclusions, changes to the design and a schedule of inspections were proposed. The newly designed engine frame should have an extended service life.

Publisher

Walter de Gruyter GmbH

Subject

Mechanics of Materials,Safety, Risk, Reliability and Quality,Aerospace Engineering,Civil and Structural Engineering

Reference12 articles.

1. [1] Szafran, K., Pągowski, Z.T. and Kramarski, I. (2015). Badania symulacyjne elementów konstrukcyjnych modułowego napędu platformy badawczej. Trans Comp, 12/2015, pp. 234-241.

2. [2] Szafran, K. and Michalczyk, M. (2016). Wybrane zagadnienia projektowania lekkich samolotów sportowych w aspekcie światowych przepisów lotniczych. Prace Instytutu Lotnictwa, vol. 243(2), pp. 142–153.10.5604/05096669.1205270

3. [3] Krzymień, W. (2016). Uwagi do wymagań przepisów budowy wiatrakowców, ML-XVII. Mechanika w Lotnictwie, Warsaw, PTMTS, pp. 217–221.

4. [4] Szafran, K. (2014). Modułowy napęd platformy badawczej na poduszce powietrznej – zalety eksploatacyjne. Logistyka, Nauka, vol. 6, pp. 86–90.

5. [5] Milczarczyk, J. and Szafran, K. (2014). Zastosowanie MES w projektowaniu a bezpieczeństwo konstrukcji na przykładzie analizy ramy silnika poduszkowca IL PRI – 760. In Bezpieczeństwo na lądzie, morzu i w powietrzu w XXI wieku. Centrum Naukowo Badawcze Ochrony Przeciwpożarowej. Józefów, pp. 279–286.

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