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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Canting - the right answer
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<blockquote data-quote="Brown Dog" data-source="post: 110562" data-attributes="member: 1622"><p>JBM,</p><p></p><p>For info;</p><p></p><p>These are the Definitions I've grown up using; I doubt they're very different from the US equivalents (a relevant selection cut-and-pasted from Brit publication "Artillery Training Volume II, Basic Principles and Theory, Pamphlet No.14, Part 3: Ballistics. 1979"..........still the current version!!).</p><p></p><p>……disturbed by how close to 'rote' my earlier LOS definition was /ubbthreads/images/graemlins/shocked.gif!</p><p></p><p></p><p> <strong>Definitions of lines:</strong> </p><p></p><p> <strong>Line of sight.</strong> The line of sight is the straight line passing through the weapon and the target.</p><p></p><p> <strong>Definitions of planes:</strong> </p><p></p><p>Vertical plane of sight is the vertical plane through the weapon containing the line of sight.</p><p></p><p>Horizontal plane. The horizontal plane at a given reference point is the tangent to the circumference of the earth at that point.</p><p></p><p> <strong>Definition of angles:</strong> </p><p></p><p> <strong>Angle of sight (AS).</strong> The vertical acute angle measured from the horizontal plane passing through the weapon to the line of sight.</p><p></p><p> <strong>Quadrant elevation (QE).</strong> The elevation at which the gun is required to be laid under the prevailing conditions to achieve the desired range.</p><p></p><p> <strong>Tangent elevation (TE).</strong> The vertical acute angle measured from the line of sight to the weapon axis.</p><p></p><p></p><p>[and I'll add the reminder that QE = TE + AS]</p></blockquote><p></p>
[QUOTE="Brown Dog, post: 110562, member: 1622"] JBM, For info; These are the Definitions I’ve grown up using; I doubt they’re very different from the US equivalents (a relevant selection cut-and-pasted from Brit publication “Artillery Training Volume II, Basic Principles and Theory, Pamphlet No.14, Part 3: Ballistics. 1979”..........still the current version!!). ……disturbed by how close to ‘rote’ my earlier LOS definition was [img]/ubbthreads/images/graemlins/shocked.gif[/img]! [b]Definitions of lines:[/b] [b]Line of sight.[/b] The line of sight is the straight line passing through the weapon and the target. [b]Definitions of planes:[/b] Vertical plane of sight is the vertical plane through the weapon containing the line of sight. Horizontal plane. The horizontal plane at a given reference point is the tangent to the circumference of the earth at that point. [b]Definition of angles:[/b] [b]Angle of sight (AS).[/b] The vertical acute angle measured from the horizontal plane passing through the weapon to the line of sight. [b]Quadrant elevation (QE).[/b] The elevation at which the gun is required to be laid under the prevailing conditions to achieve the desired range. [b]Tangent elevation (TE).[/b] The vertical acute angle measured from the line of sight to the weapon axis. [and I'll add the reminder that QE = TE + AS] [/QUOTE]
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Canting - the right answer
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