reference datum in a sentence

1. The lateral reference datum is usually located at the center of the helicopter.
2. The importance of specifying the reference datum may be illustrated by a simple example.
3. The summit is used as the reference datum for land surveying in much of northern California and Nevada.
4. The most common reference Datums in use in North America are NAD27, NAD83, and WGS 84.
5. There are hundreds of locally developed reference datums around the world, usually referenced to some convenient local reference point.
6. It's difficult to find reference datum in a sentence.
7. Many pilots today use Lange-designed barographs featuring a fixed reference datum from which all aneroid pen deflections are measured.
8. A reference datum is a known and constant surface which is used to describe the location of unknown points on the Earth.
9. Engineering constraints called for a landing site less than 45?from the Martian equator, and less than 1 km above the reference datum.
10. ;Arm : The arm is the horizontal distance from the reference datum to the center of gravity ( CG ) of an item.
11. While the horizontal reference datum can be anywhere the manufacturer chooses, most small training helicopters have the horizontal reference datum 100 inches forward of the main rotor shaft centerline.
12. While the horizontal reference datum can be anywhere the manufacturer chooses, most small training helicopters have the horizontal reference datum 100 inches forward of the main rotor shaft centerline.
13. Since reference datums can have different radii and different center points, a specific point on the Earth can have substantially different coordinates depending on the datum used to make the measurement.
14. The horizontal reference datum is an imaginary vertical plane or point, placed along the longitudinal axis of the aircraft, from which all horizontal distances are measured for weight and balance purposes.
15. ;Moment : The moment is the moment of force, or torque, that results from an object s weight acting through an arc that is centered on the zero point of the reference datum distance.
16. Aircraft center of gravity calculations are only performed along a single axis from the zero point of the reference datum that represents the longitudinal axis of the aircraft ( to calculate fore-to-aft balance ).
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