Difference between revisions of "Heading Alignment Cone"
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| + | [[Image:STS-117 approach path.gif|thumb|200px|right|The HAC is cleary shown on the flight path of STS-117.]] | ||
The '''Heading Alignment Cylinder (HAC)''' is actually a virtual truncated cone, used to guide NASA's [[Space Shuttle]] onto the centerline of a runway for landing. The radius of a HAC is about 18,000 feet, and will be entered at about 22 NM of altitude. It consists of one smooth turn along with a high rate of descent. | The '''Heading Alignment Cylinder (HAC)''' is actually a virtual truncated cone, used to guide NASA's [[Space Shuttle]] onto the centerline of a runway for landing. The radius of a HAC is about 18,000 feet, and will be entered at about 22 NM of altitude. It consists of one smooth turn along with a high rate of descent. | ||
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Once, there was an add-on that visualized the flight path throughout the descent, however this add-on is not found in the Orbithangar. | Once, there was an add-on that visualized the flight path throughout the descent, however this add-on is not found in the Orbithangar. | ||
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Revision as of 16:54, 26 June 2007
The Heading Alignment Cylinder (HAC) is actually a virtual truncated cone, used to guide NASA's Space Shuttle onto the centerline of a runway for landing. The radius of a HAC is about 18,000 feet, and will be entered at about 22 NM of altitude. It consists of one smooth turn along with a high rate of descent.
The HAC is followed until landing runway alignment, plus or minus 20 degrees, has been achieved.
Once, there was an add-on that visualized the flight path throughout the descent, however this add-on is not found in the Orbithangar.