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 ?
Table 2 lists the values of i and [A.sub.i] for each angle of elevation. The latter are standardized values [15] derived from calculations that account for the relative areas on the imaginary spherical surface associated with the sound source locations at a given angle of elevation.
ANSWERS: 1 Edward Kennedy; 2 The angle of elevation; 3 Stanley Matthews; 4 Reflex; 5 Knightsbridge; 6 Animal Farm, by George Orwell; 7 Who Do You Do; 8 Judo; 9 Canada; 10 William Cobbett.
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]).
Our method was to apply forces calculated at each angle of elevation for 10,000 cycles each.
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.
Simple geometry can be used to show that the angle of elevation of the Sun on the meridian near noon is 90[degrees] minus the angular difference between the Sun's declination and an observer's latitude (Kaler, 2002: 43) and the result could be graphed for this specific latitude.
This angle of elevation is so subtle, only a couple of degrees, that it is probably unnoticeable to the casual observer.
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.
Their study found that the majority of participants (61.6%) overestimated the angle of elevation. In our study, all of those who were inaccurate overestimated the angle of elevation.