William and all,
Vne has not directly a relation with pulling g's. You never make high speed
in rough air. To catch up speed you have to dive. This doesn't mean
vertical. You do it smoothly while observing your RPM and intake manifold
pressure. Don't overboost your engine. The Europa is as fast as you want
since the big problem was solved with the tie bar. The big problem was the
displacement of the lift point forwards with higher speeds and caused the
wings to tend forwards and bend the spars. When I purchased the Europa in
1999 the tie bar was standard and I was happy with this solution. During the
test period a friend of mine was filming my passages over the airfield of
Sedan in France. In one of the low passes I observed an IAS of 180 knots
without any difference of those below Vne. My conclusion is: don't be afraid
of Vne, accept it.
Best regards,
Karel Vranken
----- Original Message -----
From: "William Harrison" <willie.harrison@tinyonline.co.uk>
Sent: Tuesday, September 18, 2007 12:36 PM
Subject: Re: Europa-List: Dive to Vne
> <willie.harrison@tinyonline.co.uk>
>
> It's presumably not vne itself which creates the main stress, but the
> combination of g pulled by the pilot (can be airspeed-dependent if the
> pilot is not super careful) and g generated by rough air (always
> dependent on airspeed). Can't help wondering what g loadings the crash
> aircraft experienced that day. Has anyone got any info on the rumour
> about the GPS having been interrogated during the investigation?
>
> I share the doubts expressed about the real value of repeating the vne
> test every year. My own Permit expires every January which means that I
> am typically looking for a calm day in the middle of Winter (note for US
> cousins - Winter in the UK usually means crappy weather, low cloud, etc)
> with the usual anxiety about the expiry deadline looming. Maybe some folk
> are tempted to do the test in rougher weather than they should. Maybe
> some are also tempted to do the test from a lower cloudbase than they
> should, leaving less height to recover and therefore the need to pull
> more g...? It makes you wonder.
>
> Willie Harrison
> G-BZNY
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