Object

Alternative title:

Metoda przewidywania skuteczności perforowanych hamulców wylotowych

Contributor:

Radosław TRĘBIŃSKI

Abstract:

This paper presents a method for predicting a value of a gasdynamic efficiency coefficient for perforated muzzle brakes. The method is based on the interior ballistics modelling for determining gasdynamic flow parameters at the brake inlet and 2D modelling the processes inside the brake with treating vents as circumferential slots. The modelling provides information about the mass flux time changes at the inlet and at the outlet of the brake. Using this information, the mass partition coefficient values and the gasdynamic efficiency coefficient values are calculated. It has been shown that the mass partition coefficient establishes very quickly and it is determined only by the geometry of the brake. The gasdynamic efficiency coefficient establishes after a relatively long time, what demands carrying out calculations for a relatively long time period. However, it has been shown that this problem can be solved by making use of the established ratio of mass fluxes at the outlet and the inlet. So, flow parameters’ values at the inlet are sufficient for determining the gasdynamic efficiency coefficient to the moment of attaining the final value. It has been shown that this value depends on the ballistics and on the vents inclination angle.

Place of publishing:

Warszawa

Publisher:

Wojskowa Akademia Techniczna

Date created:

2010 r.0

Date submitted:

2021-07-12

Date accepted:

2021-08-24

Date issued:

2021-12-30

Extent:

B5

Identifier:

oai:ribes-88.man.poznan.pl:2622

Call number:

DOI 10.5604/01.3001.0015.5985

Electronic ISSN:

2720-5266

Print ISSN:

2081-5891

Language:

angielski

License:

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Rights holder:

Wojskowa Akademia Techniczna

Starting page:

29

Ending page:

42

Volume:

12

Keywords:

ballistics, muzzle brake, gasdynamic efficiency coefficient