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Post by kaiserwilhelm on Dec 4, 2016 15:14:15 GMT
The yamato gunhose which weighed 2774 tons was rotatated by 2 degress per second which means they had to have a pretty decent non reaction wheel turnig system.So my question is why are whe using rection wheels that are hevier then the rest of the turret.
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Post by goduranus on Dec 4, 2016 15:24:10 GMT
Also, reaction wheels shouldn't be solid, but a ring so it can get more moment of inertia relative to its mass.
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Post by kaiserwilhelm on Dec 4, 2016 15:45:11 GMT
Also, reaction wheels shouldn't be solid, but a ring so it can get more moment of inertia relative to its mass. But then you have a giant rection wheel insted of a relativly small and heavy one.So it doesn't really solve the problem of turing the turret efficently |
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Post by shurugal on Dec 4, 2016 16:47:49 GMT
reaction wheels make sense for fine-tuning aim: There is a reason that gyroscopically stabilized cameras are now the norm in video production.
However, using reaction wheels for gross aiming is... inelegant, at best. The ridiculous ratio of turret-radius:weapon-radius required to get useful angles by itself makes reaction-wheel-only designs completely impractical for space warships. Also, the inability of a spherical turret to lay its guns flush to the hull makes designing low-profile ships a complete PITA: You are forced to use broadside configurations if you want more than 2 different weapons on target at the same time. And, to top it all off, reaction wheels are a slow as hell for aiming things with high inertial moments.
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Post by kaiserwilhelm on Dec 4, 2016 16:57:26 GMT
reaction wheels make sense for fine-tuning aim: There is a reason that gyroscopically stabilized cameras are now the norm in video production. However, using reaction wheels for gross aiming is... inelegant, at best. The ridiculous ratio of turret-radius:weapon-radius required to get useful angles by itself makes reaction-wheel-only designs completely impractical for space warships. Also, the inability of a spherical turret to lay its guns flush to the hull makes designing low-profile ships a complete PITA: You are forced to use broadside configurations if you want more than 2 different weapons on target at the same time. And, to top it all off, reaction wheels are a slow as hell for aiming things with high inertial moments. Thats exactly my point reaction wheels are both nowhere near as efficent as "conventional" turrent turning systems we currently use. |
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Post by goduranus on Dec 4, 2016 17:13:20 GMT
Also, reaction wheels shouldn't be solid, but a ring so it can get more moment of inertia relative to its mass. But then you have a giant rection wheel insted of a relativly small and heavy one.So it doesn't really solve the problem of turing the turret efficently You spin it faster, the weight savings will be quite dramatic, like 2/3 of the mass of your turret. |
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Post by apophys on Dec 4, 2016 17:39:39 GMT
You spin it faster, the weight savings will be quite dramatic, like 2/3 of the mass of your turret. But the power consumption will also increase quite dramatically. |
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Post by kaiserwilhelm on Dec 4, 2016 17:53:18 GMT
Seriously does anybody know why were are stuck with reaction wheels
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Post by Pttg on Dec 4, 2016 18:50:43 GMT
Seriously does anybody know why were are stuck with reaction wheels I think it's a simplification for the AI, as without the reaction wheels, rotating a large gun on a small ship should cause the whole ship to rotate perceptibly. As it's set up now, guns rotate entirely independently from the ship and each other. I really hope we get something less ridiculous. |
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Post by newageofpower on Dec 4, 2016 21:33:30 GMT
qswitched didn't anticipate us trying to play Space Battleship Yamato. Reaction wheels are great for mini-turrets with low moments of inertia.
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Post by thorneel on Dec 4, 2016 23:54:25 GMT
qswitched didn't anticipate us trying to play Space Battleship Yamato. Reaction wheels are great for mini-turrets with low moments of inertia. True, if we look at the stock ships and some hints in the science blogs, it seems we violently broke the expected principles of design in our relentless quest of optimisation. This is one of the victims. |
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Post by zuthal on Dec 5, 2016 0:43:03 GMT
Then again, the stock 286 mm 13 MW coilgun also starts to get close to the limit of what is practical with reaction wheel turrets - the turret takes almost as much power as the gun itself to turn it at only 21.1 °/s, and if you remove the armour, it makes up half of the gun's mass - two thirds with the turret armour.
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Post by qswitched on Dec 5, 2016 6:01:40 GMT
Electric motors for turrets are a feature that is currently on the todo list.
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Post by dragonkid11 on Dec 5, 2016 6:54:13 GMT
Yesssss.
All hail qswitched!
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Post by goduranus on Dec 5, 2016 10:11:52 GMT
While we are on this, how about ship steering reaction wheels for ships with fixed guns? Oh please oh please, and fixed mount lasers that wouldn't need a heavy turret.
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