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Long Range Hunting & Shooting
Help with my long range shooting
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<blockquote data-quote="WildRose" data-source="post: 594417" data-attributes="member: 30902"><p>Mainly it has to do with the front half of the bullet.</p><p> </p><p>At SS speeds the bullet is piercing the air and traveling within a vacum created by the sonic wave generated by the tip. The long thin VLD design allows those bullets to maintain super sonic speeds and stability longer than the more blunted non VLD designs.</p><p> </p><p>At sub sonic speeds lift characteristics come into play.</p><p> </p><p>It's the same reason that early generation super sonic fighters had serious problems at sub sonic speeds. In order to achieve the greatest possible speeds the wings were shortened and swept back in a sharp V design and made ultra thin so as to reduce drag.</p><p> </p><p>Conversely low speed aircraft have a much greater wing area and the wings are straighter giving them much more air to work with.</p><p> </p><p>Many of the early SS fighter prototypes did fine as long as they were accelerating o0r cruizing above the speed of sound but destabilized often to the point of no longer being controllable as they tried to slow back to sub sonic speeds for maneuvering and landing.</p><p> </p><p>Today we get around that with planes that can change the angle of the wings and or make use of flaps for greater maneuverability and stability at low speed.</p><p> </p><p>I'm not a physicist or an engineer so I can't do a very good job of explaining it but I understand the basic principles involved and have seen the results.</p><p> </p><p>Google Bullet design and VLD bullet design and you can find some good articles on the subject.</p></blockquote><p></p>
[QUOTE="WildRose, post: 594417, member: 30902"] Mainly it has to do with the front half of the bullet. At SS speeds the bullet is piercing the air and traveling within a vacum created by the sonic wave generated by the tip. The long thin VLD design allows those bullets to maintain super sonic speeds and stability longer than the more blunted non VLD designs. At sub sonic speeds lift characteristics come into play. It's the same reason that early generation super sonic fighters had serious problems at sub sonic speeds. In order to achieve the greatest possible speeds the wings were shortened and swept back in a sharp V design and made ultra thin so as to reduce drag. Conversely low speed aircraft have a much greater wing area and the wings are straighter giving them much more air to work with. Many of the early SS fighter prototypes did fine as long as they were accelerating o0r cruizing above the speed of sound but destabilized often to the point of no longer being controllable as they tried to slow back to sub sonic speeds for maneuvering and landing. Today we get around that with planes that can change the angle of the wings and or make use of flaps for greater maneuverability and stability at low speed. I'm not a physicist or an engineer so I can't do a very good job of explaining it but I understand the basic principles involved and have seen the results. Google Bullet design and VLD bullet design and you can find some good articles on the subject. [/QUOTE]
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