Service Life Extension of Parachutes with Use of Non-Desctructive and Partially Destructive Testing Methods of Textile Materials

• Autorzy: Szafran Krzysztof Stanisław , Kramarski Ireneusz

Identyfikatory

DOI

10.2478/fas-2020-0011

• Języki publikacji: EN

Abstrakty

EN

The specificity of personal rescue and reserve parachutes is the fact that they are practically never used for jumping during their service life as they are intended for use only in emergency situations. Therefore, these parachutes throughout the entire period of use are only periodically aired and repacked every 6-12 months. Airing and repacking is necessary even if the parachute is only stored. Rescue and reserve parachutes’ components wear unevenly because the canopy with the suspension lines is inside the container and the cover, while the external components of the harness and the container undergo typical operational wear. Therefore, the service life of rescue parachutes can even reach 20 years (this refers to the canopy with the suspension lines alone). During normal exploitation, parachutes are subjected to non-destructive visual and tactile inspection in preparation for packing. When a parachute reaches its maximum service life, extension of its service life can be calculated based on its technical condition. The procedure for extending parachute’s service life involves non-destructive tests at a fabric air permeability test stand and partially destructive tests at the strength test stand. In the paper, both methods are described and their advantages and disadvantages are discussed. Also, observations some regarding the packers’ work and the desired new properties of raw materials that could be introduced to the parachute industry are presented.

Słowa kluczowe

EN

parachute systems; textile materials; fatigue degradation; service life; aviation safety

• Wydawca: Wydawnictwa Naukowe Sieci Badawczej Łukasiewicz - Instytutu Lotnictwa
• Czasopismo: Fatigue of Aircraft Structures
• Rocznik: 2020
• Tom: Iss. 12
• Strony: 113--122
• Opis fizyczny: Bibliogr. 15 poz., fot.

Twórcy

autor

Szafran Krzysztof Stanisław

• Łukasiewicz Research Network - Institute of Aviation, Al. Krakowska 110/114, 02-256 Warsaw, Poland

• https://orcid.org/0000-0003-3974-1466

autor

Kramarski Ireneusz

• HORNET, ul. Dębowa 72/33, 05-100 Nowy Dwór Mazowiecki, Poland

• https://orcid.org/0000-0001-9525-7877

Bibliografia

• [1] FAA Federal Register amending repack from 120 to 180 days. https://www.pia.com/wp-content/uploads/faa180.pdf
• [2] Parachute Handling vs Porosity https://www.hpac.ca/pub/?pid=158
• [3] Sekcja Spadochronowa Aeroklubu Warszawskiego, www.skydive.waw.pl
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• [5] Szafran, K. & Kramarski, I. (2020). Fatigue Degradation of the Ram-Air Parachute Canopy Structure. Fatigue of Aircraft Structures, 2019(11) 103-112. https://doi.org/10.2478/fas-2019-0010.
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• [9] Moezzi, M., Ghane, M. & Semnani, D. (2015). Predicting the Tensile Properties of UV Degraded Nylon66/Polyester Woven Fabric Using Regression and Artificial Neural Network Models, Journal of Engineered Fibers and Fabrics, 10(1), 1-11. https://doi.org/10.1177/155892501501000101.
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• [13] Szafran, K. & Kramarski, I. (2015). Safety of Navigation on the Approaches to the Ports of the Republic of Poland on the Basis of the Radar System on the Aerostat Platform. Trans Nav the International Journal on Marine Navigation and Safety of Sea Transportation, 9(1), 131-136. https://doi.org/10.12716/1001.09.01.16.
• [14] Szafran, K., Pągowski, Z.T. & Kramarski, I. (2015). Simulation studies of modular construction elements for hovercraft platform (In Polish: Badania symulacyjne elementów konstrukcyjnych modułowego napędu platformy badawczej na poduszce powietrznej). TTS Technika Transportu Szynowego, 22(12), 1464-1468. ISSN 1232-3829.
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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 (2021).