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1. 06:33 AM - Re: RV-10 Flap extend speeds (Bill Watson)
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| Subject: | Re: RV-10 Flap extend speeds |
Agree with Tim and Bob and Dan. The '10 flies approaches really well at
higher speeds right up to 120+ which is really handy and welcomed at
busy airports. It really slows down nicely when it's time to do so
whether at mins or above.
I put the flaps in trail either when I slow to below 120 or when
intercepting the slope, whichever comes first. I keep them there until
committed to land. That, along with prop forward (2400 when cleared for
the approach) makes missed approaches a simple matter of pitching and
powering up. (I have to admit LOP ops familiarity has me keeping the
mixture lean until slope intercept)
Bill "What a great plane and panel we all have!" Watson
On 5/5/2021 1:37 PM, Dan Masys wrote:
> In my experience (now a bit over 1200hrs in the RV-10 with lots of IFR
> approaches in the generallyyucky 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
> <mailto:ngautier@earthlink.net>> wrote:
>
> <ngautier@earthlink.net <mailto:ngautier@earthlink.net>>
>
> 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
>
>
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