Difference between revisions of "Heading Alignment Cone"
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
| − | The Heading Alignment Cylinder is an imaginary cylinder, used to guide NASA's Space Shuttle on to the centerline of a runway for landing. | + | The Heading Alignment Cylinder is an imaginary cylinder, used to guide NASA's [[Space Shuttle]] on to 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's of altitude. It consists of one 360-degree 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 nm's of altitude. It consists of one 360-degree turn along with a high rate of descent. | ||
Revision as of 12:28, 26 June 2007
The Heading Alignment Cylinder is an imaginary cylinder, used to guide NASA's Space Shuttle on to 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's of altitude. It consists of one 360-degree 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 visualised 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.