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
Let's argue about BC's
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="ZEEK" data-source="post: 474719" data-attributes="member: 29898"><p>LTLR,</p><p>I found the <span style="color: blue">following</span> statement in an article on exterior ballistics:</p><p> </p><p><span style="color: blue">Wind has a range of effects, the first being the effect of making the bullet deviate to the side. From a scientific perspective, the "wind pushing on the side of the bullet" is not what causes wind drift. What causes wind drift is drag. Drag makes the bullet turn into the wind, keeping the centre of air pressure on its nose. This causes the nose to be cocked (from your perspective) into the wind, the base is cocked (from your perspective) "downwind." So, (again from your perspective), the drag is pushing the bullet downwind making bullets follow the wind.</span></p><p> </p><p>If I read this correctly, then what is changed by the wind force, is the yaw angle. To see the variables that the yaw-of-response-vector is a function of see this page:</p><p> </p><p><a href="http://www.nennstiel-ruprecht.de/bullfly/yawrepf.htm" target="_blank"><span style="color: #551011">http://www.nennstiel-ruprecht.de/bullfly/yawrepf.htm</span></a></p><p> </p><p>Really interesting physics. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="ZEEK, post: 474719, member: 29898"] LTLR, I found the [COLOR=blue]following[/COLOR] statement in an article on exterior ballistics: [COLOR=blue]Wind has a range of effects, the first being the effect of making the bullet deviate to the side. From a scientific perspective, the "wind pushing on the side of the bullet" is not what causes wind drift. What causes wind drift is drag. Drag makes the bullet turn into the wind, keeping the centre of air pressure on its nose. This causes the nose to be cocked (from your perspective) into the wind, the base is cocked (from your perspective) "downwind." So, (again from your perspective), the drag is pushing the bullet downwind making bullets follow the wind.[/COLOR] If I read this correctly, then what is changed by the wind force, is the yaw angle. To see the variables that the yaw-of-response-vector is a function of see this page: [URL="http://www.nennstiel-ruprecht.de/bullfly/yawrepf.htm"][COLOR=#551011]http://www.nennstiel-ruprecht.de/bullfly/yawrepf.htm[/COLOR][/URL] Really interesting physics. :D [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Let's argue about BC's
Top