Difference between revisions of "Heading Alignment Cone"
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| − | The Heading Alignment Cylinder is | + | 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 radius of a HAC is about 18,000 feet, and will be entered at about 22 | ||
| − | The HAC is followed until landing runway alignment, plus or minus 20 degrees, has been achieved. | + | The '''HAC''' is followed until landing runway alignment, plus or minus 20 degrees, has been achieved. |
| − | Once, there was an add-on that | + | Once, there was an add-on that visualized the flight path throughout the descent, however this add-on is not found in the Orbithangar. |
[http://www.nasa.gov/images/content/180633main_EDW219_close.gif] | [http://www.nasa.gov/images/content/180633main_EDW219_close.gif] | ||
''The HAC is cleary shown on the flight path of STS-117.'' | ''The HAC is cleary shown on the flight path of STS-117.'' | ||
Revision as of 16:50, 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.
![[1]](http://www.nasa.gov/images/content/180633main_EDW219_close.gif){kind=link}
The HAC is cleary shown on the flight path of STS-117.