Approach

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approach

[ə′prōch]
(mechanical engineering)
The difference between the temperature of the water leaving a cooling tower and the wet-bulb temperature of the surrounding air.
(navigation)
In air operations, a maneuver executed by an aircraft in making its transit from high-altitude enroute flight to the point where it begins the landing approach; includes maneuvers (such as flying race-track pattern) required for traffic control.

Approach

 

in space navigation, a series of consecutive maneuvers by which one spacecraft is brought into close proximity to another. The aim of approach may be inspection, mooring, or assembly in orbit. Inspection, for example, entails the examination of a spacecraft at close range in order to determine the necessity of repairs. Mooring involves the temporary linking of two spacecraft with a flexible line.

Approach may be accomplished in two ways. In one technique only the final distance separating the two spacecraft is critical, and the closing speed at the moment of closest approach is not a factor. In the second technique the closing speed up to the moment of closest approach should be very low, ideally zero. This second technique requires larger expenditures of fuel than the first.

Approach requires that the two spacecraft be equipped with radio communications systems, computers, rocket engines, and navigation control systems. The active spacecraft carries out the search, maneuvering, and approach missions, while the second one is passive.

The first approach of two spacecraft with crew participation was carried out by the American spacecraft Gemini 6 and Gemini 7 in 1965. The first approach of three spacecraft with crew participation was carried out by the Soviet spacecraft Soyuz 6, Soyuz 7, and Soyuz 8 in 1969.

approach

That part of an aircraft flight path from the end of the en route phase of the flight to touchdown.

Approach

A relational database that is part of Lotus SmartSuite. It provides the ability to graphically create Windows applications using industry standard database formats, such as dBASE and Paradox. It includes macros and the ability to attach programming statements to data, providing a way to automate many kinds of applications. See Lotus SmartSuite.
References in classic literature ?
They evidently saw the approaching hour when the Long Knife would disposess them of their desirable habitations; and anxiously concerned for futurity, determined utterly to extirpate the whites out of Kentucke.
In the clearer view she could distinguish a staggering figure in the trail below who had evidently been stopped by two other expostulating shadows that were approaching from the shelter of a tree.
In fact, adown the vista of the garden avenue, a number of persons were seen approaching towards the house.
He was, moreover, approaching the very place where many of the scenes of the ghost stories had been laid.
And here Bildad, who, with Peleg, be it known, in addition to his other offices, was one of the licensed pilots of the port --he being suspected to have got himself made a pilot in order to save the Nantucket pilot-fee to all the ships he was concerned in, for he never piloted any other craft --Bildad, I say, might now be seen actively engaged in looking over the bows for the approaching anchor, and at intervals singing what seemed a dismal stave of psalmody, to cheer the hands at the windlass, who roared forth some sort of a chorus about the girls in Booble Alley, with hearty good will.
As marching armies approaching an unfriendly defile in the mountains, accelerate their march, all eagerness to place that perilous passage in their rear, and once more expand in comparative security upon the plain; even so did this vast fleet of whales now seem hurrying forward through the straits; gradually contracting the wings of their semicircle, and swimming on, in one solid, but still crescentic centre.
All this while that he was seeking for work, there was a dark shadow hanging over Jurgis; as if a savage beast were lurking somewhere in the pathway of his life, and he knew it, and yet could not help approaching the place.
There were no servants present, and the gentlemen, with chairs closely approaching, seemed to be discussing some subject with great earnestness.
We camped that night at the foot of the hills we had been approaching for two days and which marked the southern boundary of this particular sea.