大型战列舰如何克服超大口径主炮同向齐射产生的后坐力

w = B*Vo, therefore B = 1.5748

Free Recoil Velocity（自由后座速度）: Vre = (((Wp/g)+B*(Wc/g))/(Wr/g))*Vo = 37.236 fps

Recoil Energy （后座能量）= ((Wr/g)/2)*Vre^2 = 5.387*10^6 ft-lb

The rotational energy of the projectile is small by comparison and can be neglected.

弹丸的旋转能量极小可以忽视。

The overall mechanical energy is only a part (40 to 50%) of the chemical energy of the propellant, since a considerable portion of the energy is carried off as heat by the propellant gases, or transmitted to the gun barrel.

总机械能只是发射药化学能的40%－50%，其余部分作为热能被燃气带走，或传递给炮管。

Ref. Rheinmetall Handbook on Weaponry, 1982, chapter 9.

Now, with these factors in mind, here are some additional calculations.

The momentum of a single projectile can be calculated as follows:

单一弹丸的动量

Projectile momentum （弹丸动量）= (Weight of projectile/g) * Muzzle velocity of projectile （弹丸重量/重力）×炮口初速

= (2,700 / 32.174) * 2,500

= 209.80 x 10^3

Momentum of the propellant gasses can be calculated from Leo's numbers as follows:

Propellant gas momentum （燃气动量）= (Wc/g) * w

= (650 / 32.174) * 3,937

= 79.54 x 10^3

Summing these:

两者的和：

Projectile momentum + Propellant gas momentum = 209.80 x 10^3 + 79.54 x 10^3

= 289.34 x 10^3

The Free Recoil momentum calculation can be used as a check, as it should be about equal to the sum of the momentums of the projectile and propellant gasses.