Talk:Aircraft compass turns: Difference between revisions

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This article uses the terminology "standard rate turn" - is this a "Rate 1 turn" in UK parlance - i.e. 180 degrees in 1 minute? If so, is the formula for this not (TAS / 10) + 7, not + 5 as in the article?

Do people really perform gyro-less turns using a calculation method as described in the article? Surely timed turns at three seconds per 10 degrees with a fudge for rolling-in/out are much simpler? I ask because this is the way they're taught in the UK.

Finally, "When the aircraft is at any altitude above the earth's surface the compass will tend to dip towards either the North Pole when in the northern hemisphere": the author's wording of this implies that there is no dip at the surface. This is not so. Possibly this is something that the author did not intend to imply.

BaseTurnComplete 23:04, 31 December 2005 (UTC)[reply]

Yes, a standard rate turn is 3 degrees per second = 180 degrees per minute = 360 degrees in 2 minutes. I've also heard this described as a 'two-minute turn'. My Jeppesen manual says that the formula is indeed (TAS / 10) + 5.

I've been taught to make no-gyro turns both ways (calculation and time), and for me, the timed-turn method is far simpler. I guess it's a personal thing.

Yvh11a 22:09, 23 January 2006 (UTC)[reply]

Gentlemen I've corrected this article as follows: 1. Removed turn coordinator as directional instrument, because the TC is not one. 2. Added some to magnetic dip effect description. 3. Corrected compass lead/lag info and expected error angle. 4. Standard turn explanation added. 5. Given formula for standard turn is useful when turn coordinator or turn-slip indicator fails.

I suggest that the title of this article shall be changed. It encompasses more than turns and more than turns made with magnetic compass. Or perhaps it shall be split.