Mailing List lml@lancaironline.net Message #27684
From: Dominic V. Crain <domcrain@pacific.net.au>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: Knots - not
Date: Tue, 18 Jan 2005 07:59:05 -0500
To: <lml@lancaironline.net>

The post I made was for a small but important debate re the KNOT factor.

It just seemed to me, over here on the upper side of the planet, that some guys down under ( i.e., the US) might use the term MPH when indeed they mean KNOTS.

Having been over that before as we know, I wanted to now obtain some of your data for stall speeds at MTOW in the approach config.

I am interested to know if we are all using a defined measure of approach speed over the stall, i.e., 1.3 Vs.

For example, my aircraft stalls in the approach config. at 64 knots after a MTOW. So near enough to max weight of 816 Kgs (1800 lbs).

That is a minimum approach of 83 KNOTS.

Pucker factor means I approach at 90 KNOTS, and bleed to 85 over the fence.

That approach speed gives me a lot of leeway in the event, which occurs regularly in the MBZ, some manoeuvring is required for traffic. It also accounts for turbulence and my incompetence.

Nevertheless these aircraft are unforgiving if you run out of speed, and I would rather err on the fat side than the lean.

So we all know what we mean, I reckon we should all get KNOTTED.

I LOVE METARS.

Regards

Dom

 

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