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Recoil of a gun in the hydraulic resistance formula


V ( where, plus room for 2 rooms and the average pressure of 7 I and A, B coefficient; a {2 [0.946s / ~ No ¨ 05s / r, ~ Kylie + * Chia Lu +1 . . 1_K, s where 0 is a turning point pipeline, where a 90oI drag coefficient along the way, the word for the turbulent West 2 differential cylinder diagram 0.1981 cm / s ID for the pipe diameter It ? l =. ] / N for the pipe flow Reynolds respect for the {{L pulp as pipe length,[link widoczny dla zalogowanych], a one-way valve opening area posed by the drag coefficient} and Ks-oriented pipeline for the cross-sectional area. 7 by 3,4,6 room into the cavity, considering the pressure loss narrowed section, by a \54 '85 '-n = ∞ {+ from where c = [+ chips one by one Li 1]. hundred KIV ・ 1 When is negative, the coefficient of D unchanged,[link widoczny dla zalogowanych], but as = a [(a As) to + + - Kwame ( is equal to (9), we have; l-t-mouth one by one do I handle and a spout (6), (7), ( with the divided, and so =; = Port 2; = port a, is a relatively equations one also made their rQ'i-A7 = As + AI-【a CQ ';-I-convex + B equation,[link widoczny dla zalogowanych], B,, D coefficient of structural parameters. Finally, in piston rod back as the research object, the column balance equation, one can get a c [Organisation () to raise such a '2 mouth Xiang% (blood-F) (9) (10) A (- mountain )[+'] Port 2 \When the recoil rod piston skirt contact with the front end cap, the 5 cavity mouth area of the liquid in the discharge from the drain, you can still push the form of equation (11),[link widoczny dla zalogowanych], but the coefficient is: = [+ a +] = * a mouth coefficient unchanged. When Port 2 is negative, the coefficient is: = a [1 a) * to + Man +, etc.] * other factors remain unchanged. Therefore,[link widoczny dla zalogowanych], the piston skirt can get in contact with the front cap of the hydraulic resistance of the formula: where a c a [(.) Xiang _ a [∞ 2 First Class + * DW] and so raise the blood of a c [+ - where d is positive when taking d = l, is negative when taking d = 0. Constitute the differential in tank-type recoil mechanism is still in the country met for the first time, the advantage is to recoil faster. Therefore, this method is not only the anti-gun design provides the necessary technical reserves, and improve the national stage against the back seat for the device design theory has a certain reference value. ・ 86 ・ No. J, J99JJOURNALOFNALACADEMYOFENGINEERINGsum №. 5 References i Zhang Yuelin artillery against the back seat device design, Beijing: State Fermentation Industry Press Du, 198 | 2 Wang Mao-Yao _ hydraulic transmission and control tutorial. Tianjin University Press, l98. TheFormulaeofHydraulicResistanceforaCertainNavalGuntsRecoilMechanismZhouDeku ~ 'finXJ / DengaetractTheRecoilmechanismofacer ~ nnavalgunisofhydropneumaticrecoil-refuperator. Itsstruc-tureisverycomplicated. Specially, duringrecuperating, theliquidflowformsdifferentialcircuitasacertainnonrcturnvalveisopened-Inthispaper, theformulaeofhydraulicresistancefarthisnavalgun'SrecoilmechanismisderivedSothatnecegsarytechniquecbeprovidedf0fthereversedesigntothisnavalgun. Keywords: Navalgun; Recoilandantirecolmechanism; Hydraulicresistancel

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