A aviation & planes forum. AviationBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AviationBanter forum » rec.aviation newsgroups » Soaring
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Are 'Single 180 Turn From Downwind to Final' and 'Stall-spin on Turnfrom Base to Final' mutually exclusive?



 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #17  
Old November 23rd 16, 05:06 AM posted to rec.aviation.soaring
Bob Whelan[_3_]
external usenet poster
 
Posts: 400
Default Are 'Single 180 Turn From Downwind to Final' and 'Stall-spin onTurn from Base to Final' mutually exclusive?

On 11/22/2016 8:20 PM, Eric Greenwell wrote:
Bruce Hoult wrote on 11/19/2016 12:50 AM:

Define "coordinated". No problem to spin with the string perfectly
centered.

It's true in any glider with enough elevator, but the Blanik is
excellent for demonstrating it. Shallow turn, very graaaadually slow
it down, maintaining constant bank angle with aileron and keeping the
string in the middle with the rudder. Pretty soon you've got a whole
heap of out of turn aileron and into turn rudder. But the string is
in the middle and the nose isn't even very high. And then BAM full-on
incipient spin.


Bruce describes how I practice incipient spins in my ASH 26 E (also the way I
practiced them in my ASW 20 C). One moment I'm doing a smooth, coordinated
turn; an instant later, the inboard wing is rotating down - no warning.

Blame this somewhat-thread-drifting post on winter finally trying to put in an
appearance in this part of the northern hemisphere...

I'm guessing what Eric's "no warning" comment means is "in the absence of a
distinct separation-induced burble," or something similar (I've not flown
either an ASW 20 or ASH 26). I'm gonna "winter-quibble" with the concept "no
warning."

My club used to have a 2-32 (eventually sold) about which the same thing was
routinely said, and in fact the ship did routinely and enthusiastically drop
the same wing before beginning a rapid rotation if not "immediately and
properly countered." If it really did catch someone out, going through at
least 90-degrees of an incipient spin, and WAY nose down before recovery - was
in your immediate future. Many club pilots of roughly equivalent time as I
then had might accurately have been described as "unduly frightened" of the ship.

But "no warning?" Surely you jest (and my name isn't Shirley). True, before
the wing "let go" there was (almost always) an absence of aerodynamic burble
felt through the stick or one's butt or merely "drummed" through the metal
fuselage, but by the time the wing did let go, "all the other usual suspects"
had put in their appearances: low wind noise; nose noticeably high; controls
(especially stick) getting sloppy; etc. Subsequent to checking out in the
ship, I found it "intellectual fun" to mess around with it in slow flight
"trying to find the burble." Abrupt departure from controlled flight - yes,
indeed! "No warning?" - not by a long shot.

Bob - a big fan of coordination AND "sufficient airspeed" - W.
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Downwind to final turns Jonathan St. Cloud Soaring 18 June 7th 15 02:19 PM
Base to Final - Fatal Orval Fairbairn[_2_] Piloting 0 August 8th 10 03:23 AM
The Art of Racing - Final Turn.jpg (1/1) Mitchell Holman[_4_] Aviation Photos 0 February 27th 10 12:42 PM
Final Approach, pt 3 - KFME final.jpg (1/1) Mitchell Holman[_3_] Aviation Photos 0 April 8th 09 12:56 PM
Turn to Final - Keeping Ball Centered skym Piloting 224 March 17th 08 03:46 AM


All times are GMT +1. The time now is 08:08 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright 2004-2025 AviationBanter.
The comments are property of their posters.