Halfinax, on 10 February 2012 - 09:46 PM, said:
Lasers shouldn't cause any kind of "impact" beyond melting away armor, and undoubtedly more ballistic or missiles hitting should have more "impact". Inertia should still be a factor. I really don't want to see some kind of hollywood action movie thing where a 1 ounce (10 bl) slug hitting a 'Mech causes it to fly back 20 ft. (20 Meters). The firing 'Mech should suffer as much recoil as the target 'Mech (except in the instance of missiles) when it comes to recoil. It's physics!
Actually, any sort of projectile would (outside of a vacuum) have less energy at the point of impact than at firing, due to the effects of drag.
However, consider also that even if the
energy imparted to the target cannot be greater than the energy imparted to the firing 'mech, the rate of deceleration of any projectile as it hits the target 'mech will almost always be higher than the rate of acceleration as it exits its launcher (the exception possibly occuring when a very hard projectile simply passes through a very soft target with minimal resistance). Since the rate of energy transfer into the target is much higher, it produces a greater force on the target due to a higher
Impulse produced by a higher
****. Additially, in weapons where chemical reactions (e.g. explosives) are able to convert chemical energy into kinetic energy, additional forces will be applied to the target 'mech.
An analogy might be throwing and catching a baseball. When I throw, according to Newton's 3rd law, the ball is exerting a reaction force against my hand even as my hand exerts force against the ball, but the acceleration from the throwing motion is long and gradual. When the ball is caught, it's still carrying most of the momentum and kinetic energy it had when it left my hand, and the catcher has to decelerate that mass to dissipate the energy. Typically the glove and arm flex slightly to cushion the impact, but the motion is still much more abrupt, and the force at the point of impact is greater than at the point of release.
And if the catcher isn't paying attention, and the ball hits him somewhere nice and bony (let's say swuare on the forehead), the deceleration is quite sudden, and even while the ball may retain a portion of its original momentum as a result of this collision, the force imparted to the catcher's head is greater than the force imparted to his gloved hand would have been. The impact might be enough to knock the would-be catcher down! (Yes, I've ignored some inelastic effects from the compression of the glove and the hand, but for our intents and purposes they are "small".)
Of course, there is also a second effect of hitting someone in the head with a baseball, which is the trauma and disorientation caused by being hit. Taking this comparison to the battlemech, IIRC canon documents that 'mech "knockdowns" may be caused by loss of balance due to nero-electrical feedback from damage to critical systems via the neurohelmet interface, in addition to the jarring experienced from the impact. So while the force of a stream of autocannon shells hitting a 'mech might not be sufficient to knock it over (for all that the force on the target 'mech is greater than the force on the firing 'mech), as mentioned by other commenters, the pilot will be shaken and possibly disoriented, and in addition may experience feedback if a critical hit is scored, either or both of which may result in a loss of balance.
Light is treated as both a particle and wave, but since quantum physics defines a
photon as mass-less, lasers do not impart any physical force to their target, only thermal energy. I can still see them producing a knockdown from a critical hit due to feedback effects, but not as a result of impact force.
Lord Trogus, on 11 February 2012 - 03:59 PM, said:
BT won't shrink from change, it will help interest new people. Notice how 80+% of the BT fanbase is 25 years or older, meaning most players were there at the beginning, and there is no growth between ages. If we continue to stick to every single word the canon says, BT will continue to shrink, not grow.
Can you back this up with facts, or is it just supposition?
Lord Trogus, on 11 February 2012 - 03:59 PM, said:
And notice how all the other weapons (aside from lasers, they didn't exist yet) followed true to conventional weapons from the 80's. BT had to make the lasers up by guesswork and theory from the very beginning. Now that we know what it would take to build a laser that powerful, there must be something to accurately fit it. So for the life of you, it's time for just a bit of change.
We had PPCs and Gauss rifles back in 1984? Why was I not informed, I'd have definitely asked Santa for one!
Lord Trogus, on 17 February 2012 - 10:43 AM, said:
My thoughts exactly. While playing through the other MW games, I found it easy to develop mechs that could constantly cause knock without repercussions. For instance, 4x LBX-5 AC in MW4 could constantly rock a target on each hit, disorienting the receiver and causing a great deal of disruption to any chance of retaliation. However, group firing them would still cause the same rocking! I also noticed adding even one Large Laser into the mix exponentially increased chances of completely knocking over the mech. Why is it that there is seemingly a stacking system for knockover, but not knockback?
Because MW4 has really borked physics? I really preferred the weapons effects of MW3.
Nightwish, on 21 February 2012 - 09:38 AM, said:
A 2cm hole has 4 times the surface area of 1cm hole, bring this into the third dimension and a 2cm sphere has 8 times the volume of a 1cm sphere, pretty basic right?. Therefor an AC10 round being twice the size of an AC5 round would have 8 times the mass. Therefor 3 AC5's would still only deliver 3/8 of the mass and energy of an AC10. So if we want true realism an AC10 should cause 8 times more knockback than an AC5, and an AC20 should cause 64 times more knockback than an AC5.
Or, if you consider the AC/10 to have twice the
mass of the AC/5 round, the radius of that sphere only increases by the cubed root of 2, or is only 26% larger. Of course, spherical projectiles aren't very efficient, so I doubt they would be used in autocannons, as they aren't used in modern firearms or artillery...