How many mph does B-25H lose when firing cannon?

[Krusty]

I fly the B-25H once in a while... I'm terrible with the big gun. Have tried it on bombers, GVs, CVs, etc... Never noticed any speed loss, any vibrations, and backward motion.

Seems to have no recoil.

I saw this today:

http://www.youtube.com/watch?v=zpi11_iS8Nk&feature=related

B-25H test fire of the cannon. The entire airframe rocks backwards on its wheels. Looks like they TIED IT DOWN, which is surprising.

Maybe AH2's B-25H doesn't have enough kick?? 

[Karnak]

Get very slight forward motion on the runway, fire the gun and see if you stop or get pushed backwards.   I got one aircraft, N1K2-J or Il-2 I think, up to about 20mph backwards using the guns as thrusters.

[Devonai]

This is a myth that persists today with the A-10 Thunderbolt II.  Due to conservation of momentum, there is no change in the forward velocity of an airborne aircraft during weapons fire of any kind.

[BnZs]

This is a myth that persists today with the A-10 Thunderbolt II.  Due to conservation of momentum, there is no change in the forward velocity of an airborne aircraft during weapons fire of any kind.

Go to offline practice, set your ammo load to infinite, take up any airplane you like, full throttle and auto level, and hold down the trigger. You will loose airspeed. So if it is a myth, it is a myth that is modeled into AHII.

[Krusty]

This is a myth that persists today with the A-10 Thunderbolt II.  Due to conservation of momentum, there is no change in the forward velocity of an airborne aircraft during weapons fire of any kind.

It is NOT a myth. Even the pilots in Korea knew this. One told a story of how a MiG was just outside of his Saber's gun range, and he knew if he took a shot it would slow him down even further, but the MiG was getting away so he sprayed a burst anyways, then turned back for home.

EDIT: The myth may be that you fall out of the sky or fly backwards or something. You DO slow down, that's a fact.

[AirFlyer]

This is a myth that persists today with the A-10 Thunderbolt II.  Due to conservation of momentum, there is no change in the forward velocity of an airborne aircraft during weapons fire of any kind.

Really? Newton's Third Law seems to dictate the idea that there would be lose in speed, the only way to avoid this would be ways of dispersing the recoil of the gun through dampeners or something of that sort.

[Saxman]

What IS a myth is the stories that the recoil would cause the B-25 to immediately stop in mid-air, or be thrown backwards by the recoil.

[AirFlyer]

What IS a myth is the stories that the recoil would cause the B-25 to immediately stop in mid-air, or be thrown backwards by the recoil.

Assuming I did it right, a B-25 weighing 15,200Kg moving at 300MPH would have the Kinetic Energy of 136693816.9344 Joules, no aircraft mounted gun is going to stop that midair from recoil.

Not to say you were implying this of course.

[33Vortex]

This is a myth that persists today with the A-10 Thunderbolt II.  Due to conservation of momentum, there is no change in the forward velocity of an airborne aircraft during weapons fire of any kind.

sorry but...  

The recoil of that 30 mm cannon you mention, is about equal to the thrust of one of the A10's engines. It's like hitting a brick wall, very rapid deceleration. Conservation of momentum, ehhh? 

[Strip]

The recoil of that 30 mm cannon you mention, is about equal to the thrust of one of the A10's engines. It's like hitting a brick wall, very rapid deceleration. Conservation of momentum, ehhh? 

Which is exactly how A-10 pilots describe it.....

[Devonai]

 

[Masherbrum]

It's ok, it is well documented that "the myth" you presented, exists.   

[Raptor]

Maybe AH2's B-25H doesn't have enough kick?? 

I found this interesting so I went and tested it. It appears the AH aircraft have their brakes locked when sitting still and no throttle is applied (take planes on the CV for example, they sit still unless you add very little thottle, in which they will roll backwards).

I put the b25 so it was moving slightly forward, and when I fired the 75mm, it went from 1mph to 2mph (backwards using E6B). It looked almost exactly like the video you posted, except in AH you have to be moving slightly for it to take effect.
It appears the 75mm has the same recoil affect as all of the 50 cals on the b25.

[Krusty]

I think you have to test it in the air. Doing the same thing in a P47 you can get -10mph of speed up. It's not a matter of constant firing, it's how much 1 shot will slow ya down, that I'm wondering about. I usually slow down as much as I can so that I can milk as many shots on a single target as I can, and have never had problems with my nose dropping, or stalling out, or needing to goose the throttles, or anything in-game.

So it makes me wonder.

[Bronk]

I think you have to test it in the air. Doing the same thing in a P47 you can get -10mph of speed up. It's not a matter of constant firing, it's how much 1 shot will slow ya down, that I'm wondering about. I usually slow down as much as I can so that I can milk as many shots on a single target as I can, and have never had problems with my nose dropping, or stalling out, or needing to goose the throttles, or anything in-game.

So it makes me wonder.

For the most part you would already going down hill with the B-25H when attacking. Gravity helps keep airspeed up. Heck, even with throttles closed you have to be cautions of alt before nosing over. Those elevators come off real easy.
As for trying to snipe buffs... you'd have to have it firewalled just to keep up with any other buff.

As to the recoil itself it does push the nose around, difficult to get multiple shots off on a tank.