Ppl & cpl?

**marty** · 28th July 2009, 22:53

Originally Posted by Jantar

e. Like "the clouds down here have hard centers." etc. .

the old Cumulus Granitus huh.....

**marty** · 28th July 2009, 22:57

Originally Posted by Jantar

Another potential trap. You cannot outclimb the down side of a wave, you can only turn downwind and fly out of it as quickly as you can. If there is a ridge downwind then that is even better, because that decending air mass hitting a ridge line will result in an equally strong updraught.

A few weeks ago I was dragging an old 206 with 8 pax up to 10000' over at Matamata. Big north easterly (the best for a lee wave but makes it bumpy low level at matamata).

On top of the Kaimais I saw the VSI off the clock (over 2000fpm) from 4000' to 12000' - normal ROC at that weight is a sedate 600fpm......

The first down draught was about 10 miles to the lee of the ridgeline.

**Jantar** · 28th July 2009, 23:09

Originally Posted by marty

.... Big north easterly (the best for a lee wave but makes it bumpy low level at matamata).....

I just love that easterly wave at Matamata. Its bumpy as hell down low, but as smooth as silk just ahead of the cloud. One particular time I remember well was in the Jantar (hey that's where my username comes from) and climbing at 1000 fpm between the primary and secondary leniticiulars. From the Quarry east of Matamata to Thames in 30 minutes and that was without benefit of a spinning thing up front.