angle of elevation


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angle of elevation

[′aŋ·gəl əv ‚el·ə′vā·shən]
(engineering)
The angle in a vertical plane between the local horizontal and an ascending line, as from an observer to an object; used in astronomy, surveying, and so on. Also known as ascending vertical angle; elevation angle.
(ordnance)
The vertical angle above the line of sight through which the axis of the gun bore must be raised so that the bullet or projectile will carry to the target.
In aerial gunnery, an acute angle between the bore axis of a gun and the horizontal; called quadrant elevation in ground gunnery.

angle of elevation

The angle in a vertical plane between the local horizontal and an ascending line, as from an observer to an object. A negative angle of elevation is usually called an angle of depression.
References in periodicals archive ?
We calculated two angles to describe the position of the upper arm related to the thorax: (1) the angle of elevation (Figure 3(b)), defined as the angle between the upper arm and trunk (upper arm parallel with thorax, 0[degrees]; upper arm parallel with horizontal; 90[degrees]), and (2) the plane of elevation (Figure 3(c)), defined as the angle between the thorax and the upper arm in the transversal plane (arm extended forward, 0[degrees]; arm extended to the lateral, -90[degrees]).
Now, given the large number of people waiting in line with me, not to mention my angle of elevation to those behind, I naturally just assumed it was someone else's shoulder I could feel brushing against me.
It was allowable if it did not exceed the angle of elevation of the Mull of Kintyre from the mainland.
At a maximum firing angle of elevation of 35-degrees, the rifle, shotgun and muzzleloader projectiles travel 13,926', 10,378', and 9,197' respectfully.
Two of the ramps were built with about a 10-degree angle of elevation.
Used to measure the angle of elevation of a celestial object above the horizon-typically the sun or the Pole Star--the sextant allowed mariners to determine their position at sea.
MOA: Gives minutes of angle of elevation to adjust a riflescope for precise zero.
A sextant is used to measure the angle of elevation above the horizon of celestial bodies, including the sun.
To perform this calculation you will need measurements of your distance from the object, and the measurement of the angle between the ground and the top of the object, or the angle of elevation.
Furthermore, a plot of paintball range versus angle of elevation showed that the maximum range did not occur near an elevationangle of 45 degrees, but instead occurred at approximately 30 degrees, indicating that friction was important.
Air Force, which has radar installations in Riverhead on eastern Long Island and at Truro on Cape Cod that can estimate the altitude of incoming objects by recording the angle of elevation of the radar when the signal hit the object.