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]).
9[degrees]) and six subjects had reduced angle of elevation (0.
Because the RAMP module enables the patient's angle of elevation to be adjusted via a pneumatic AirPod(TM), OR staff will no longer be required to manually lift the patient and use linens or pillows to achieve the desired elevation.
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.
A sextant is used to measure the angle of elevation above the horizon of celestial bodies, including the sun.
The only way in which a sextant can be used to measure latitude is at night in the northern hemisphere by measuring the angle of elevation of the pole star.
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.
The minimum angle of elevation that an Iridium subscriber could experience is about eight degrees.
The angle of 10[degrees], as initially quoted, refers to the angle of elevation from the horizontal.
The 30-foot by 34-foot banner will be displayed at a horizontal orientation and, in order to reduce stress to the textile, at a 10-degree angle of elevation.
All of the groups eventually concluded that if they could measure a distance from the base of the flagpole to a point where the angle of elevation to the top was close to a multiple of 10[degrees] then they could use the values in the table to calculate the height of the pole.