Today's Message Index:
----------------------
1. 09:33 AM - Re: RV-10 Flap extend speeds (Thomas Gautier)
2. 09:57 AM - Re: RV-10 Flap extend speeds (Tim Olson)
3. 10:05 AM - Re: RV-10 Flap extend speeds (Phil Perry)
4. 10:18 AM - Re: RV-10 flap extend speeds (Bob Turner)
5. 10:34 AM - Re: Re: RV-10 flap extend speeds (Tim Olson)
6. 10:38 AM - Re: RV-10 Flap extend speeds (Dan Masys)
Message 1
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| Subject: | Re: RV-10 Flap extend speeds |
Thanks for all the replies guys. I was hoping for more relief on Vfes. I have seen
a POH with higher speeds but am reluctant to explore uncharted territory.
Heres my real problem: Im trying to develop sensible approach speed/flap configurations
for IFR approaches. I saw a suggestion for 85 kias/18 deg flaps (2nd
notch) as a final approach speed. I think I would like 90 kias better but thats
kind of close to the 96 kias limit on 18 deg flaps.
I tried 85kt/18deg but I found that my speed stability under the somewhat turbulent
conditions I had was poor enough that my auto pilot was dropping out due
to low airspeed on coupled approaches.
I ask for the group wisdom. Doesnt look like I have much wiggle room on Vfes. What
is the lowest sensible autopilot cut out speed (I have a Dynon auto pilot
with my SkyView system)? Should I just use 90 kias with flaps in trail? What do
you guys do?
Regards,
Nick Gautier
N363TG
sn 40363
Message 2
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| Subject: | Re: RV-10 Flap extend speeds |
I think I have mine to something like 75 or 80kts, because you're still
a ways from
a stall at that point. I just want to make sure that if I approach a
stall, the AP goes
off. Other than that I'm not to worried about it.
Tim
On 5/5/2021 11:33 AM, Thomas Gautier wrote:
>
> Thanks for all the replies guys. I was hoping for more relief on Vfes. I have
seen a POH with higher speeds but am reluctant to explore uncharted territory.
>
> Heres my real problem: Im trying to develop sensible approach speed/flap configurations
for IFR approaches. I saw a suggestion for 85 kias/18 deg flaps (2nd
notch) as a final approach speed. I think I would like 90 kias better but thats
kind of close to the 96 kias limit on 18 deg flaps.
>
> I tried 85kt/18deg but I found that my speed stability under the somewhat turbulent
conditions I had was poor enough that my auto pilot was dropping out due
to low airspeed on coupled approaches.
>
> I ask for the group wisdom. Doesnt look like I have much wiggle room on Vfes.
What is the lowest sensible autopilot cut out speed (I have a Dynon auto pilot
with my SkyView system)? Should I just use 90 kias with flaps in trail? What
do you guys do?
>
> Regards,
> Nick Gautier
> N363TG
> sn 40363
>
>
Message 3
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| Subject: | Re: RV-10 Flap extend speeds |
Can you reconfigure your flap position controller so you get more flap stop options?
That sounds like the solution youre looking for.
10 Flaps (13 if youre counting -3 as 0) at 95-100kts yields positive control and
still has the ability to slow down once you break out. I typically fly the
approaches around 100 kts until we breakout. Going to absolute minimums I might
slow it down a bit more.
But my flap controller allows me to set intermediate positions and not just -3,
0, 15, and 30.
Phil
Sent from my iPhone
> On May 5, 2021, at 10:37 AM, Thomas Gautier <ngautier@earthlink.net> wrote:
>
>
> Thanks for all the replies guys. I was hoping for more relief on Vfes. I have
seen a POH with higher speeds but am reluctant to explore uncharted territory.
>
> Heres my real problem: Im trying to develop sensible approach speed/flap configurations
for IFR approaches. I saw a suggestion for 85 kias/18 deg flaps (2nd
notch) as a final approach speed. I think I would like 90 kias better but thats
kind of close to the 96 kias limit on 18 deg flaps.
>
> I tried 85kt/18deg but I found that my speed stability under the somewhat turbulent
conditions I had was poor enough that my auto pilot was dropping out due
to low airspeed on coupled approaches.
>
> I ask for the group wisdom. Doesnt look like I have much wiggle room on Vfes.
What is the lowest sensible autopilot cut out speed (I have a Dynon auto pilot
with my SkyView system)? Should I just use 90 kias with flaps in trail? What
do you guys do?
>
> Regards,
> Nick Gautier
> N363TG
> sn 40363
>
>
>
>
>
>
Message 4
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| Subject: | Re: RV-10 flap extend speeds |
IMHO you need to be prepared to fly several different configurations/speeds. Ive
flown into major airports where I was mixed with jet traffic, and ATC asked
for best possible speed. OTOH that clearly doesnt work well on a dark foggy night
with visibilities right at 1/2 mile. So I practice:
120 kias no flaps for big city airports
100 kias flaps zero (in trail) for routine
85 kias flaps 20 (2nd notch) for anytime visibility is < 1 mile.
My autopilot is a Trio, and it is programed to lower the nose below 70 kias.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=501715#501715
Message 5
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| Subject: | Re: RV-10 flap extend speeds |
I would say that Bob's right on. I usually use 100kts for routine
approaches, if it isn't super low.
I can reconfigure the plane pretty quickly, and like the feel at 100kts
better and get gets you
there quicker. Having he flaps to zero gets you done with that initial
flap switch push, so
you're ready for setup to landing. And when it's low, I do slow down to
about 85kts and
get fully prepared for landing when I break out.
Even for just general landing practice, it's a good idea to practice
straight-in approaches
at speeds like 140kts, occasionally. I've had plenty of times when
I've been asked to
keep my speed up due to jet or higher speed traffic following, so it's
nice practice
an expedited approach. I find that with the right combination of
pitch/power/prop,
you can slow down pretty quickly and transition to landing from higher
speeds
real well in the RV-10.
Tim
On 5/5/2021 12:18 PM, Bob Turner wrote:
>
> IMHO you need to be prepared to fly several different configurations/speeds.
Ive flown into major airports where I was mixed with jet traffic, and ATC asked
for best possible speed. OTOH that clearly doesnt work well on a dark foggy
night with visibilities right at 1/2 mile. So I practice:
> 120 kias no flaps for big city airports
> 100 kias flaps zero (in trail) for routine
> 85 kias flaps 20 (2nd notch) for anytime visibility is < 1 mile.
> My autopilot is a Trio, and it is programed to lower the nose below 70 kias.
>
> --------
> Bob Turner
> RV-10 QB
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=501715#501715
>
>
Message 6
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| Subject: | Re: RV-10 Flap extend speeds |
In my experience (now a bit over 1200hrs in the RV-10 with lots of IFR
approaches in the generally yucky Pacific Northwest weather) 90kts is a
nice stable approach speed and you don't need any flaps at all to do it.
(e.g., just set MP to about 11 inches and trim for 90kts; drop that to 9
inches with the same trim and down you go from the FAF with or without
autopilot). With a normal 3 degree ILS or LPV, you reach a 200 ft DH at
1/2 mile to the threshold (convenient for knowing whether you have the
needed 200 and a half) and the -10 is so good slowing down that from the
MAP if you see the runway you can go from even reflex to full flaps and
slow from 90kts to say, 70kts and be ready to touch down by the time you
are over the numbers. (This is with the factory IO-540 and Hartzell
blended airfoil prop -- YMMV). And if you have to go missed, since you
didn't have any flaps to reposition you just add power and retrim for a
best rate climeout (also 90kts in my plane, though I tend to use 100-110 to
improve cooling and it still climbs at 1500+ fpm.
The -10 is just remarkable with respect to controllability and how fast it
can transition to different speeds at the low end of the envelope. Not a
pussycat, but a terrific tiger kitten.
-Dan Masys
N104LD
40447
On Wed, May 5, 2021 at 9:38 AM Thomas Gautier <ngautier@earthlink.net>
wrote:
>
> Thanks for all the replies guys. I was hoping for more relief on Vfe
=99s. I
> have seen a POH with higher speeds but am reluctant to explore uncharted
> territory.
>
> Here=99s my real problem: I=99m trying to develop sensible ap
proach speed/flap
> configurations for IFR approaches. I saw a suggestion for 85 kias/18 deg
> flaps (2nd notch) as a final approach speed. I think I would like 90 kias
> better but that=99s kind of close to the 96 kias limit on 18 deg fl
aps.
>
> I tried 85kt/18deg but I found that my speed stability under the somewhat
> turbulent conditions I had was poor enough that my auto pilot was droppin
g
> out due to low airspeed on coupled approaches.
>
> I ask for the group wisdom. Doesn=99t look like I have much wiggle
room on
> Vfe=99s. What is the lowest sensible autopilot cut out speed (I hav
e a Dynon
> auto pilot with my SkyView system)? Should I just use 90 kias with flaps
in
> trail? What do you guys do?
>
> Regards,
> Nick Gautier
> N363TG
> sn 40363
>
>
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