Pressure waves influence on performance of a pyrotechnically driven device

• Autorzy: Górniak A. , Kaźmierczak A. , Włostowski R. , Ptak M.

Identyfikatory

DOI

10.5604/12314005.1165957

• Języki publikacji: EN

Abstrakty

EN

This paper contains an experimental investigation of a movable wall with variable shape response to a shock wave. Here, the shock wave was generated by a pyrotechnic gas generator used in the automotive industry. The test station consists on a pyrotechnic actuator in which the movable wall is expressed as a piston. This pyrotechnic actuator was specially design for such type of an investigation. Its design allows withstanding numerous tests without affecting the accuracy. What was under investigation here was the actuators piston stroke velocity and which, as it appeared, changes with respect to the various shape of the actuators interior as well as a corresponding to the barrier velocity total pressure existing within the expansion chamber of the actuator. The results shown here correspond to the flat surface as well as conical and concave cylinder bottom of the actuator. The conical and flat piston surface is considered as a reference for subsequent investigation because such a design is the most similar to the existing pyrotechnically driven designs. The experimental research proves that the performance of pyrotechnically driven devices is dependent upon the shock wave shaping.

Słowa kluczowe

EN

pyrotechnically driven devices; shock waves; pyrotechnic gas generator

• 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. 3
• Strony: 21--27
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Górniak A.

• Wroclaw University of Technology Department Vehicle Engineering Braci Gierymskich Street 164, 51-640 Wroclaw, Poland tel.: [phone], fax: [phone]

autor

Kaźmierczak A.

• Wroclaw University of Technology Department Vehicle Engineering Braci Gierymskich Street 164, 51-640 Wroclaw, Poland tel.: [phone], fax: [phone]

autor

Włostowski R.

• Wroclaw University of Technology Department Vehicle Engineering Braci Gierymskich Street 164, 51-640 Wroclaw, Poland tel.: [phone], fax: [phone]

autor

Ptak M.

• Wroclaw University of Technology Department of Machine Design and Research Lukasiewicza Street 7/9, 50-371 Wroclaw, Poland

Bibliografia

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• [3] Gushanov, A. R., dependence of the shape of a detonation wave front on the detonation wave velocity upon detonation of a cylindrical charge, Combustion Explosion and Shock, Vol. 37, pp. 113-118, 2001.
• [4] Henshaw, W. D., Smyth, N. F, Schwendeman, D. W., Numerical shock propagation using geometrical shock dynamics, Journal of Fluid Mechanics, Vol. 17, pp. 519-545, 1986.
• [5] Schulze, N. R, First NASA aerospace system workshop. NASA conference Publication 3169, N93-20133, 1993.
• [6] Ciccarelli, G., Dorofeev, S., Flame acceleration and transition to detonation in ducts, Progress in Energy and Combustion Science, Vol. 34, No. 4, pp. 499-550, 2007.
• [7] Gherlone, M., Lomario, D., Mattone, M., Ruotolo, R., Application of wave propagation to pyroshock analysis, Shock and Vibration, Vol. 11, pp. 145-156, 2004. [8] Nabulsi, S. M., Page, N. W., Response of a movable walls to a shock wave, Proceedings of the 11th Australian Fluid Mechanics Conference, pp. 35-38, University of Tasmania, Hobart, Australia 1992.