At 16:45 23 November 2012, kirk.stant wrote:
On Friday, November 23, 2012 10:00:08 AM UTC+1, wrote:
Great responses Papa3 & BobW. For those wanting to quantify glide
ratios,=
the Airbus A330-300 quotes a glide ratio of 18:1 with a double engine
fail=
ure. This includes the added drag from the RAT, an emergency windmill
that
=
extends to provide hydraulic and electrical power in such a situation.
Not
=
bad for a 238,000kg machine Casey

Yeah but what is the sink rate? And at what speed?

Kirk
66


Well lets do some Mathematics....

Estimated best L/D speed 160 knots
Therefore vertical speed = 160 / 18 = 8.89 knots

and that equals 8.89 x 6000 =53,333 ft / hr

which equals 53,333 /60 = 889 ft/min.

QED