Today's Message Index:
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1. 09:41 AM - Re: RV-10 Flap extend speeds (Robert Jones)
2. 01:44 PM - Re: RV-10 Flap extend speeds (WILLIAM BOOTH)
Message 1
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| Subject: | Re: RV-10 Flap extend speeds |
I agree with Dan. I only have about 200 hours on my 10, but during the last 1
5 hours of my fly off all I did was instrument approaches. It was obvious th
at flaps 0 worked the best. I would only use flaps for the approach for stee
p approaches like 6 degrees. Dan=99s power settings are right on for m
ost 10=99s. Maybe small variations in MP may be required for a few 10
=99s, but 11=9D and 9=9D would be very close to what you woul
d need for any 10.
Using any flaps for the approach just makes things more complicated. It is e
asy to fly approaches with the 10 with no flaps.
I flew corporate jets for a living and I can tell you that knowing what powe
r setting to use to get the desired performance is critical to doing a good a
pproach. The 10 is really no different. Very small variations from the known
power settings will be required for extra strong head winds and other varia
bles, but you will always start very close to what you need if you know what
works for your aircraft.
Robert Jones
> On May 5, 2021, at 10:43 AM, Dan Masys <dmasys2@gmail.com> wrote:
>
> =EF=BB
> In my experience (now a bit over 1200hrs in the RV-10 with lots of IFR app
roaches in the generally yucky Pacific Northwest weather) 90kts is a nice st
able approach speed and you don't need any flaps at all to do it. (e.g., ju
st set MP to about 11 inches and trim for 90kts; drop that to 9 inches with t
he 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 thresh
old (convenient for knowing whether you have the needed 200 and a half) and t
he -10 is so good slowing down that from the MAP if you see the runway you c
an go from even reflex to full flaps and slow from 90kts to say, 70kts and b
e ready to touch down by the time you are over the numbers. (This is with t
he factory IO-540 and Hartzell blended airfoil prop -- YMMV). And if you ha
ve to go missed, since you didn't have any flaps to reposition you just add p
ower and retrim for a best rate climeout (also 90kts in my plane, though I t
end 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 p
ussycat, but a terrific tiger kitten.
>
> -Dan Masys
> N104LD
> 40447
>
>> On Wed, May 5, 2021 at 9:38 AM Thomas Gautier <ngautier@earthlink.net> wr
ote:
>>
>> 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 uncha
rted 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 8
5 kias/18 deg flaps (2nd notch) as a final approach speed. I think I would l
ike 90 kias better but that=99s kind of close to the 96 kias limit on 1
8 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 o
ut due to low airspeed on coupled approaches.
>>
>> I ask for the group wisdom. Doesn=99t look like I have much wiggle r
oom on Vfe=99s. 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 w
ith flaps in trail? What do you guys do?
>>
>> Regards,
>> Nick Gautier
>> N363TG
>> sn 40363
>>
>>
>>
>> ==========
>> -List" rel="noreferrer" target="_blank">http://www.matronics.com/Navi
gator?RV10-List
>> ==========
>> FORUMS -
>> eferrer" target="_blank">http://forums.matronics.com
>> ==========
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>> b Site -
>> -Matt Dralle, List Admin.
>> rel="noreferrer" target="_blank">http://www.matronics.com/contributio
n
>> ==========
>>
>>
>>
Message 2
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| Subject: | Re: RV-10 Flap extend speeds |
Great discussion guys. Even with lots of time in bigger aircraft it=99
s nice to see experience talking on the RV10. You have confirmed what I have
been suspecting at the 75 hour mark.
Wm Booth
Sent from my iPad
> On May 6, 2021, at 11:41 AM, Robert Jones <rjones560xl@gmail.com> wrote:
>
> =EF=BBI agree with Dan. I only have about 200 hours on my 10, but durin
g the last 15 hours of my fly off all I did was instrument approaches. It wa
s obvious that flaps 0 worked the best. I would only use flaps for the appro
ach for steep approaches like 6 degrees. Dan=99s power settings are ri
ght on for most 10=99s. Maybe small variations in MP may be required f
or a few 10=99s, but 11=9D and 9=9D would be very close to
what you would need for any 10.
> Using any flaps for the approach just makes things more complicated. It is
easy to fly approaches with the 10 with no flaps.
>
> I flew corporate jets for a living and I can tell you that knowing what po
wer setting to use to get the desired performance is critical to doing a goo
d approach. The 10 is really no different. Very small variations from the kn
own power settings will be required for extra strong head winds and other va
riables, but you will always start very close to what you need if you know w
hat works for your aircraft.
>
> Robert Jones
>
>>> On May 5, 2021, at 10:43 AM, Dan Masys <dmasys2@gmail.com> wrote:
>>>
>> =EF=BB
>> In my experience (now a bit over 1200hrs in the RV-10 with lots of IFR ap
proaches in the generally yucky Pacific Northwest weather) 90kts is a nice s
table approach speed and you don't need any flaps at all to do it. (e.g., j
ust 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). Wit
h a normal 3 degree ILS or LPV, you reach a 200 ft DH at 1/2 mile to the thr
eshold (convenient for knowing whether you have the needed 200 and a half) a
nd the -10 is so good slowing down that from the MAP if you see the runway y
ou can go from even reflex to full flaps and slow from 90kts to say, 70kts a
nd be ready to touch down by the time you are over the numbers. (This is wi
th the factory IO-540 and Hartzell blended airfoil prop -- YMMV). And if yo
u have to go missed, since you didn't have any flaps to reposition you just a
dd 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 i
t can transition to different speeds at the low end of the envelope. Not a p
ussycat, but a terrific tiger kitten.
>>
>> -Dan Masys
>> N104LD
>> 40447
>>
>>> On Wed, May 5, 2021 at 9:38 AM Thomas Gautier <ngautier@earthlink.net> w
rote:
>>>
>>> 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 uncha
rted territory.
>>>
>>> Here=99s my real problem: I=99m trying to develop sensible a
pproach 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 o
n 18 deg flaps.
>>>
>>> I tried 85kt/18deg but I found that my speed stability under the somewha
t 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. Doesn=99t look like I have much wiggle
room on Vfe=99s. 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
>>>
>>>
>>>
>>> ==========
>>> -List" rel="noreferrer" target="_blank">http://www.matronics.com/Nav
igator?RV10-List
>>> ==========
>>> FORUMS -
>>> eferrer" target="_blank">http://forums.matronics.com
>>> ==========
>>> WIKI -
>>> errer" target="_blank">http://wiki.matronics.com
>>> ==========
>>> b Site -
>>> -Matt Dralle, List Admin.
>>> rel="noreferrer" target="_blank">http://www.matronics.com/contributi
on
>>> ==========
>>>
>>>
>>>
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