Turn rate on EFIS displays
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Join Date: Mar 2006
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Turn rate on EFIS displays
I'm embarrassed to ask, but where is rate of turn indicated on modern EFIS displays? On Boeing/Airbus models, the ball is replaced by an indication under the roll index, but how do you know if you're turning at standard rate?
I assume if the AP is on, it will make standard rate turns if the TAS will allow, but how do you know if you're hand flying?
I assume if the AP is on, it will make standard rate turns if the TAS will allow, but how do you know if you're hand flying?
Join Date: Mar 2001
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Standard turn rate is only applicable until around 180kts. Minimum clean speed is always higher than that on the boeings i fly, therefore standard turn rate is of no concern.
Because you cannot achieve a RATE 1 turn inside 30deg AOB above 180 KIAS. Usually limited to 30 deg AOB at most levels ( it can be less depending on the situation and a/c type ) and at our speeds it's not possible achieve rate 1.
So we never use/refer to rate of turn or have a display of it.
Bank angle is more of a concern with reference to maneuver margins above stall.
On a Boeing there is a slip/skid indicator under the sky pointer at all times.
On a Airbus it is also a Beta target on t/o with an Engine out.
Nothing magical here.
So we never use/refer to rate of turn or have a display of it.
Bank angle is more of a concern with reference to maneuver margins above stall.
On a Boeing there is a slip/skid indicator under the sky pointer at all times.
On a Airbus it is also a Beta target on t/o with an Engine out.
Nothing magical here.
Join Date: Jul 2007
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To obtain bank angle for Standard rate turn.
Not talking about the glass screen aircraft but as a guide for all aircraft, take the first two digits of the indicated airspeed, add seven, this gives you the angle of bank required for a standard rate of turn of three degrees per second,
Tmb
Tmb
And in the Airbus (can't speak for the Boeing), you'll get a different AoB at altitude depending on whether you're managed or selected laterally (i.e. DIRTO or Pull HDG). This will affect your Rate of Turn.
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Standard 25° bank (30° max), but at higher speeds this will be less than rate 1 and thus giving a bigger turning radius.
