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Extreme Long Range Hunting & Shooting (ELR)
Is it possible to shoot into outer space ?
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<blockquote data-quote="Hugnot" data-source="post: 3049776" data-attributes="member: 115658"><p>From Wikipedia:</p><p></p><p>[h3]<strong>Earth[<a href="https://en.wikipedia.org/w/index.php?title=Escape_velocity&action=edit&section=2" target="_blank">edit</a>]</strong>[/h3]<p>For example, at the Earth's surface, the surface gravity is about 9.8 m/s2 (9.8 N/kg, 32 ft/s2), and the escape speed for a small object is about 11.186 km/s (40,270 km/h; 25,020 mph; 36,700 ft/s).<a href="https://en.wikipedia.org/wiki/Escape_velocity#cite_note-6" target="_blank">[5]</a> This is approximately 33 times the <a href="https://en.wikipedia.org/wiki/Speed_of_sound" target="_blank">speed of sound</a> (Mach 33) and several times the <a href="https://en.wikipedia.org/wiki/Muzzle_velocity" target="_blank">muzzle velocity</a> of a rifle bullet (up to 1.7 km/s). At 9,000 km altitude, escape speed is slightly less than 7.1 km/s. These velocities are relative to a non-rotating frame of reference; launching near the equator rather than the poles can actually provide a boost.</p><p></p><p>In this context, when taking Earth as the primary body, escape velocity is sometimes called "second cosmic velocity"<a href="https://en.wikipedia.org/wiki/Escape_velocity#cite_note-7" target="_blank">[6]</a></p><p></p><p>[h3]<strong>Energy required[<a href="https://en.wikipedia.org/w/index.php?title=Escape_velocity&action=edit&section=3" target="_blank">edit</a>]</strong>[/h3]<p>For an object of mass �<img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0a07d98bb302f3856cbabc47b2b9016692e3f7bc" alt="{\displaystyle m}" class="fr-fic fr-dii fr-draggable " style="" /> the energy required to escape the Earth's gravitational field is <em>GMm / r</em>, a function of the object's mass (where <em>r</em> is <a href="https://en.wikipedia.org/wiki/Earth_radius" target="_blank">radius of the Earth</a>, nominally 6,371 kilometres (3,959 mi), <em>G</em> is the <a href="https://en.wikipedia.org/wiki/Gravitational_constant" target="_blank">gravitational constant</a>, and <em>M</em> is the mass of the <a href="https://en.wikipedia.org/wiki/Earth" target="_blank">Earth</a>, <em>M</em> = 5.9736 × 1024 kg). A related quantity is the <a href="https://en.wikipedia.org/wiki/Specific_orbital_energy" target="_blank">specific orbital energy</a> which is essentially the sum of the kinetic and potential energy divided by the mass. An object has reached escape velocity when the specific orbital energy is greater than or equal to zero.</p><p></p><p>What is needed are 3 stage 6.5 CM loads having 45.36 gram bullets each containing 3 progressive charges of solid propellent firing thru 3, each disposable nozzles. Twist rate is irrelevant as pop out fins assure adequate ballistic stability. Barrel life is of no concern because less than 20 grains of a medium burn rate powder would be required to initiate ejection of the solid fueled projectile from the 2.5 meter long barrel.</p><p></p><p>Project managers may expect generous grants to compete work on this complex but potentially high profit (every shooter just has to have one) project.</p><p></p><p>Panama would be a good place for production testing and caveats would be provided for use in Alaska.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 3049776, member: 115658"] From Wikipedia: [h3][B]Earth[[URL='https://en.wikipedia.org/w/index.php?title=Escape_velocity&action=edit§ion=2']edit[/URL]][/B][/h3] For example, at the Earth's surface, the surface gravity is about 9.8 m/s2 (9.8 N/kg, 32 ft/s2), and the escape speed for a small object is about 11.186 km/s (40,270 km/h; 25,020 mph; 36,700 ft/s).[URL='https://en.wikipedia.org/wiki/Escape_velocity#cite_note-6'][5][/URL] This is approximately 33 times the [URL='https://en.wikipedia.org/wiki/Speed_of_sound']speed of sound[/URL] (Mach 33) and several times the [URL='https://en.wikipedia.org/wiki/Muzzle_velocity']muzzle velocity[/URL] of a rifle bullet (up to 1.7 km/s). At 9,000 km altitude, escape speed is slightly less than 7.1 km/s. These velocities are relative to a non-rotating frame of reference; launching near the equator rather than the poles can actually provide a boost. In this context, when taking Earth as the primary body, escape velocity is sometimes called "second cosmic velocity"[URL='https://en.wikipedia.org/wiki/Escape_velocity#cite_note-7'][6][/URL] [h3][B]Energy required[[URL='https://en.wikipedia.org/w/index.php?title=Escape_velocity&action=edit§ion=3']edit[/URL]][/B][/h3] For an object of mass �[IMG alt="{\displaystyle m}"]https://wikimedia.org/api/rest_v1/media/math/render/svg/0a07d98bb302f3856cbabc47b2b9016692e3f7bc[/IMG] the energy required to escape the Earth's gravitational field is [I]GMm / r[/I], a function of the object's mass (where [I]r[/I] is [URL='https://en.wikipedia.org/wiki/Earth_radius']radius of the Earth[/URL], nominally 6,371 kilometres (3,959 mi), [I]G[/I] is the [URL='https://en.wikipedia.org/wiki/Gravitational_constant']gravitational constant[/URL], and [I]M[/I] is the mass of the [URL='https://en.wikipedia.org/wiki/Earth']Earth[/URL], [I]M[/I] = 5.9736 × 1024 kg). A related quantity is the [URL='https://en.wikipedia.org/wiki/Specific_orbital_energy']specific orbital energy[/URL] which is essentially the sum of the kinetic and potential energy divided by the mass. An object has reached escape velocity when the specific orbital energy is greater than or equal to zero. What is needed are 3 stage 6.5 CM loads having 45.36 gram bullets each containing 3 progressive charges of solid propellent firing thru 3, each disposable nozzles. Twist rate is irrelevant as pop out fins assure adequate ballistic stability. Barrel life is of no concern because less than 20 grains of a medium burn rate powder would be required to initiate ejection of the solid fueled projectile from the 2.5 meter long barrel. Project managers may expect generous grants to compete work on this complex but potentially high profit (every shooter just has to have one) project. Panama would be a good place for production testing and caveats would be provided for use in Alaska. [/QUOTE]
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Is it possible to shoot into outer space ?
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