Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistics Question?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Long Time Long Ranger" data-source="post: 203141" data-attributes="member: 505"><p>I'm a rocket scientist and not a jet fighter scientist so I don't know at what speeds they fire bullets out of jets. A bullet shot at 3000 fps is about 2045 mph which is faster than our fighter jets. Back in ww2 the prop fighters relied on machine gun fire instead of missiles but they didn't go very fast. Even at 500 mph which adds about 733 fps on the bullet for a total of 3733 fps isn't a problem. Even in Vietnam with the F-4 phantoms they were not as fast as todays jets but certainly they used a lot of machine gun fire. I don't know at what speeds in a dogfight they were accurate, but at 1000 mph the combined bullet velocity is up to 4466 fps. I think todays jets at 1500 mph primarily use missiles. </p><p></p><p>With missiles at high speed, heat off the nose cone represents a big problem because we must design it around all the junk we have to get inside the nosecone. We can't just build a sleek streamlined nosecone in other words. With a bullet you can, which should keep the heat down to workable levels. But even at that and considering the full metal jackets they shoot I still bet that metal gets a bit soft in the front. Looking at the bullets they use I wonder if that different colored tip where most of the heat would be is a metal much more resistant to heat. What happens to that plastic, nylon tip popular on a lot of bullets when fired at 4000 fps or about 2727 mph? That is pretty close to equal of a 50 caliber shot out of a F-4 phantom.</p><p></p><p>Good question.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 203141, member: 505"] I'm a rocket scientist and not a jet fighter scientist so I don't know at what speeds they fire bullets out of jets. A bullet shot at 3000 fps is about 2045 mph which is faster than our fighter jets. Back in ww2 the prop fighters relied on machine gun fire instead of missiles but they didn't go very fast. Even at 500 mph which adds about 733 fps on the bullet for a total of 3733 fps isn't a problem. Even in Vietnam with the F-4 phantoms they were not as fast as todays jets but certainly they used a lot of machine gun fire. I don't know at what speeds in a dogfight they were accurate, but at 1000 mph the combined bullet velocity is up to 4466 fps. I think todays jets at 1500 mph primarily use missiles. With missiles at high speed, heat off the nose cone represents a big problem because we must design it around all the junk we have to get inside the nosecone. We can't just build a sleek streamlined nosecone in other words. With a bullet you can, which should keep the heat down to workable levels. But even at that and considering the full metal jackets they shoot I still bet that metal gets a bit soft in the front. Looking at the bullets they use I wonder if that different colored tip where most of the heat would be is a metal much more resistant to heat. What happens to that plastic, nylon tip popular on a lot of bullets when fired at 4000 fps or about 2727 mph? That is pretty close to equal of a 50 caliber shot out of a F-4 phantom. Good question. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistics Question?
Top