Rule of thumb

[GroundBound]

I'm looking for a "rule of thumb" for the relationship between descent rate and airspeed. If a descent rate (e.g. imposed by ATC) is increased, is it possible to calculate/guess the increased aispeed in (IAS or TAS)?

e.g. Normal rate of descent 2000ft/min and IAS 220, ATC ask for 3000ft/min, what would the IAS be?

Can a similar rule be applied to reduction of airspeed if ATC ask for increased climb rate?

Does shuch a rule (it it exists) apply to all types of aircraft (from snall single props to
4-jet whiz-bangs)?

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The truth is inside!

[GroundBound]

Thanks Zeke,

some usefull stuff there, but unfortunately not covering quite what I need.

Cheers, anyway

[Blindside]

and the background music's shocking!

[GroundBound]

See (hear?) what you mean about the music :-0 I didn't even know there was any (noise knob wound fully left), until you said!