0 Members and 2 Guests are viewing this topic.
the Stardust sample-return capsule was the fastest man-made object to reenter Earth's atmosphere (~12.4 km/sec / ~28,000 mph relative velocity at 135 km altitude)
This is not a bullet, but the "Stardust" capsule is the fastest man-made object to pass through (thin) air. Quotethe Stardust sample-return capsule was the fastest man-made object to reenter Earth's atmosphere (~12.4 km/sec / ~28,000 mph relative velocity at 135 km altitude)...sorry, you cannot view external links. To see them, please
REGISTER or LOGIN
Ballistics eh?is not the (Have to try and remember the caliber of the said quickest bullet) something like 4.5 mil from a 28OT6? @4000 fps somewhere in that range, must be a web site or so giving such info.
As has been described, high muzzle velocity carries severe penalties in size, weight, recoil, muzzle blast, barrel wear and cost. As a result, it has lost much of its original glamour and is now sought only if necessary to achieve a specific aim. In the civilian hunting field, this has restricted its use to circumstances in which accurate shooting at very long range, or against very small targets, is involved, The military are interested for different reasons; to reduce the time of flight (and thereby increase accuracy against moving targets), to extend maximum artillery range, and to improve armour penetration.It is probable that conventional chemistry has pushed muzzle velocities about as far as they can go; the rate of expansion of propellant gasses places a practical ceiling on muzzle velocity of around 6,000 fps. The military are now examining other technologies such as electromagnetic rail guns, which have on test fired 300 gm projectiles at over 13,000 fps, with projectiles of a few grams being accelerated to over 30,000 fps. At the moment, the massive power supplies needed to achieve these results preclude any practical application, but there can be little doubt as to where the future lies.
In the video game, Crysis, there is a gun that uses electromagnetic waves to launch bullets and Mach 2. Could we do that? And why use "Mach" as the word for "speed of light"? Is it Latin or something?