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- Path: sparky!uunet!paladin.american.edu!gatech!prism!randy
- From: randy@cerl.gatech.edu (Randal T. Abler)
- Newsgroups: rec.aviation.piloting
- Subject: Re: pilotage: any tricks/tips?
- Message-ID: <81862@hydra.gatech.EDU>
- Date: 26 Jan 93 14:05:42 GMT
- References: <1993Jan18.195355.19928@nntpserver.chevron.com> <1993Jan18.203057.11750@CSD-NewsHost.Stanford.EDU> <1993Jan19.011435.6414@den.mmc.com> <C147tL.6Kp@plato.ds.boeing.com>
- Sender: news@prism.gatech.EDU
- Lines: 42
- In-Reply-To: <80897@hydra.gatech.EDU>
-
- I'm posting this as a courtesy to someone who was having trouble posting,
- please respond directly to him.
-
-
- From jmmatthe@cbda8.apgea.army.mil Fri Jan 22 20:10:26 1993
-
- I'm going to post this to you since you're first in the string and for
- some reason the system is rejecting my followups. If you will, please
- send it on to the net.
-
- Back when I was taking lessons in a radioless ragbag, my instructor in-
- troduced me to the "Aim to miss" method of navigation. In its basic
- form, it assumes dead reckoning navigation, though it can be used to
- "shade" other methods when the circumstances warrant.
-
- You're flying a longish leg, one which will stretch the fuel a bit, maybe.
- Maybe your arrival will be close to sunset--possibly you didn't plan it
- that way, but were delayed enroute. There is a scarcity of good check-
- points--lots of things on the chart, but less than totally informative.
- The wind information you used to plan your flight is from a hundred miles
- away and is now several hours old. The visibility is good VFR, about 5
- or 6 miles, but when you get high enough to see much, there's not much
- to see. Sort of like the southeast about half of the year.
-
- When the middle checkpoint fails to show up, you don't want to wander
- around trying to find it, for that path leads to fuel exhaustion. If
- you've been able to hold a steady course, you can continue that way.
- But if the next checkpoint isn't there either, you're very nearly lost.
- So, instead of holding that course until your ETA and not knowing which
- side of you your destination is on, alter course 5 or so degrees downwind.
- Sooner or later, you'll cross some identifiable feature--a highway, river,
- or powerline. When you do, you know which way to turn to follow it back
- to your proper course, or at least terra cognita.
-
- Like most things you learn about flying, this can't be used indiscriminate-
- ly. But there are times when it helps.
-
- J. Matthews
- Standard Disclaimers Apply
- --
- Randal Abler randy@cerl.gatech.edu
- CERL/EE Georgia Tech
-