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User currently offlineATR42 From Israel, joined Jul 2000, 37 posts, RR: 0
Posted (13 years 3 months 6 days 21 hours ago) and read 1225 times:

Hi! I have 2 questions,

1) What is a STAR?
2) How can you determine a radial, and how do you use it?

Any answer will be appreciated!



10 replies: All unread, jump to last
 
User currently offlineIainhol From , joined Dec 1969, posts, RR:
Reply 1, posted (13 years 3 months 6 days 20 hours ago) and read 1100 times:

A STAR is a Standard Arrival. It is basically they way to find the runway.

A radial is just a direction to a VOR (Beacon which you can fly to very accurately). Normally it is given to you either in on the plate or by the controller, however if it is not you normally just go directly 'TO' the beacon you tune it in on your nav radio, indentify it (listen to a morse code to make sure it is the one you want to go to) and then on you VOR indicator, you can turn a knob and when the needle is in the middle, that is the radial you want to fly to the VOR at!
Iain


User currently offlineJetguy From , joined Dec 1969, posts, RR:
Reply 2, posted (13 years 3 months 6 days 20 hours ago) and read 1093 times:

For many of us it's even easier than Lain explained. The STARs for each airport are included in the FMS's navigational database. We simply add the appropriate SID and/or STAR to our route and "fly the box". Lain's comments were appropriate to light aircraft operations. It goes without saying that we would have to revert back to those methods if we were to suffer a DUAL or TRIPLE FMS failure, but even then most guys would simply say screw it and ask for vectors.

User currently offlineRalgha From United States of America, joined Nov 1999, 1614 posts, RR: 6
Reply 3, posted (13 years 3 months 6 days 13 hours ago) and read 1070 times:

Radials are directions from a VOR, not to  Big thumbs up


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User currently offlineModesto2 From United States of America, joined Jul 2000, 2791 posts, RR: 5
Reply 4, posted (13 years 3 months 6 days 12 hours ago) and read 1064 times:

Not to be picky but STAR is an acronym for "standard terminal arrival route."

User currently offlineWidebody From Ireland, joined Aug 2000, 1152 posts, RR: 8
Reply 5, posted (13 years 3 months 6 days 12 hours ago) and read 1062 times:

Yep, Standard Terminal Arrival Route is right.....

User currently offlineWISAZ13 From , joined Dec 1969, posts, RR:
Reply 6, posted (13 years 3 months 6 days 4 hours ago) and read 1037 times:

Thank you Ralgha. RADIALS ONLY GO FROM A STATION.

User currently offlineTimz From United States of America, joined Sep 1999, 6813 posts, RR: 7
Reply 7, posted (13 years 3 months 5 days 16 hours ago) and read 1017 times:

On any kind of aeronautical chart you'll see many VORs (or VORTACs), which have been the main enroute navaid for the last forty or fifty years. Think of them as a wheel laid on the ground with 360 spokes, which are the 360 radials, one degree apart, with the zero-degree radial pointed at magnetic north. The chart shows the radio frequency for each VOR; when an aircraft with the necessary equipment tunes to a VOR the pilot sees that he is on the 90-degree radial of that VOR (if he is directly magnetic-east of it) or on the 315-degree radial (if he is NW of it) and so on.

So shortly after a flight from New York to Boston takes off from La Guardia Airport, the controller will probably tell the pilot something like "Delta eighteen twenty eight turn left zero four zero, intercept the La Guardia zero five five, resume own navigation." In other words, "Point the aircraft 40 degrees right of magnetic north until you reach the 055-degree radial of the La Guardia VOR, then turn right and fly along it according to your flight-planned route." (As it happens, aircraft from LGA to BOS use the VOR at the airport, but that's often not the case; aircraft leaving SFO and OAK to fly to Los Angeles are invariably told to intercept the 135-degree radial of the Point Reyes VOR, which is many miles away to the NW.)

Airways over land (in developed countries, anyway) mostly run from one VOR to the next, which means they are defined by which radial they use at each VOR.


User currently offlineTimz From United States of America, joined Sep 1999, 6813 posts, RR: 7
Reply 8, posted (13 years 3 months 5 days 8 hours ago) and read 1001 times:

Take a look at a simple STAR: http://www.edj.net/cgi-bin/echoplate.pl?Arrivals/LENDY%20FOUR.GIF

Jets into JFK from the west ordinarily use this arrival. Aircraft from various cities converge on the Wilkes-Barre VOR and follow its 124-degree radial to the Stillwater VOR; they then follow the Stillwater 109-degree radial and await their handoff to approach control. Note that the STAR ends with the aircraft still at FL190; the rest of the flight will be under the direct instructions of the controller until they're cleared for a published approach to whatever runway is in use at the time. Note also that they fly the same STAR whatever runway is in use.


User currently offlineDG_pilot From United States of America, joined Sep 1999, 856 posts, RR: 2
Reply 9, posted (13 years 3 months 5 days 7 hours ago) and read 994 times:

A BEARING is TO the VOR, and like someone else said, a RADIAL is FROM a VOR.

User currently offlineStallspeed From , joined Dec 1969, posts, RR:
Reply 10, posted (13 years 3 months 5 days 7 hours ago) and read 990 times:

Just to muddy the water, as I seem to do so well. A radial is not just for VOR use. Radials also apply to NDBs.


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