Mechanical and Ballistic Properties of Spherical Single Base Gun Propellant

• Autorzy: Boulkadid K. M. , Lefebvre M. H. , Jeunieau L. , Dejeaifve A.

Identyfikatory

DOI

10.22211/cejem/67538

• Języki publikacji: EN

Abstrakty

EN

The effect of the initial temperature on the mechanical properties of spherical single base gun propellant was investigated by means of a compression test, which consisted of compression of a propellant bed conditioned at various initial temperatures. Following this mechanical treatment, the pressed grains (after thermal conditioning at ambient temperature) were tested in a closed vessel. The results from the combination of compression and closed vessel tests supported the assumption that there are two phenomena occurring inside the cartridge at low temperatures which compensate each other; the first is a decrease in the burning rate as the initial temperature is decreased, and the second is grain fracturing occurring on ignition. Additionally, a specific parameter, the specific surface area, turns out to be an appropriate parameter for quantifying the mechanical damage to the propellant grain resulting from the compression test. Tests on the aged propellant have also been conducted.

Słowa kluczowe

EN

mechanical properties; firing temperature; gun propellant; ageing; ballistic firing; closed vessel tests

• Wydawca: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2017
• Tom: Vol. 14, no. 1
• Strony: 90--104
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Boulkadid K. M.

• Laboratory for Energetic Materials , Royal Military Academy, Av de la Renaissance 30, 1000 Brussels, Belgium

autor

Lefebvre M. H.

• Laboratory for Energetic Materials , Royal Military Academy, Av de la Renaissance 30, 1000 Brussels, Belgium

autor

Jeunieau L.

• Laboratory for Energetic Materials , Royal Military Academy, Av de la Renaissance 30, 1000 Brussels, Belgium

autor

Dejeaifve A.

• PB Clermont SA, Rue de Clermont 176, 4480 Engis, Belgium

Bibliografia

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• [3] Field, J. E.; Bourne, N. K.; Palmer, S. J. P.; Walley, S. M.; Sharma, J.; Beard, B. C. Hot-spot Ignition Mechanisms for Explosives and Propellants [and Discussion]. Phil. Trans. R. Soc. Lond. A 1992, 339: 269-283; doi: 10.1098/rsta.1992.0034.
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• [6] Fong, C. W.; Moy, B. K. Ballistic Criteria for Propellant Grain Fracture in the GAU-8/A 30 mm Gun. AFATL-TR-82-21, Eglin Air Force Base, FL, AirforceArmament Laboratory, 1982.
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• [9] Lieb, A. J.; Rocchio, J. J. The Effects of Grain Fracture on the Interior Ballistic Performance of Gun Propellants. Proc. 8th Int. Symposium on Ballistics, Washington, USA, 1983, 25-34.
• [10] Oberle, W. F. Dynamic Vivacity and Its application to Conventional and Electrothermal-Chemical (ETC) Closed Chamber Results. ARL-TR-2631, 2001.
• [11] Boulkadid, M.K.; Lefebvre, M.H.; Jeunieau, L.; Dejeaifve, A. Temperature Sensitivity of Propellant Combustion and Temperature Coefficients of Gun Performance. Cent. Eur. J. Energ. Mater. 2016, 13(4): 1005-1022.
• [12] Van Driel, C.; De Klerk, W. Mechanical Integrity and Burning Properties of Aged Gun Propellants. Proc. 33th Int. Annu. Conf. ICT, Karlsruhe, 2002.
• [13] STANAG 4115: Definition and Determination of Ballistic Properties of Gun Propellants. North Atlantic Council, 1997.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).