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rv10(at)sinkrate.com
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 Posted: Tue Sep 09, 2008 7:34 pm Post subject: power off glide and descent rate |
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What sort of numbers are people seeing for best glide speed and rates of descent? I’m curious if there is an appreciable difference between the 2-blade descent rate and the 3-blade descent rate in a power off glide? Rob have you done any testing in this arena with the hartzell? If so do you know what your descent rate is? All this talk about cruise performance between the 2 and 3 bladed guys but so far we haven’t discussed the “oh s**t” performance.
-Ben Westfall
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flysrv10(at)gmail.com
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| Posted: Wed Sep 10, 2008 1:49 am Post subject: power off glide and descent rate |
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There are couple of Robs on the list ,I think. I have done the testing but won't have access to them until next week. I'll be happy to tell you mine if you tell me yours!
On Sep 9, 2008, at 11:33 PM, Ben Westfall wrote:
| Quote: | What sort of numbers are people seeing for best glide speed and rates of descent? I’m curious if there is an appreciable difference between the 2-blade descent rate and the 3-blade descent rate in a power off glide? Rob have you done any testing in this arena with the hartzell? If so do you know what your descent rate is? All this talk about cruise performance between the 2 and 3 bladed guys but so far we haven’t discussed the “oh s**t” performance.
-Ben Westfall
| Quote: | http://www.matronics.com/Navigator?RV10-List
blue; text-decoration: underline; ">http://forums.matronics.com
style="color: blue; text-decoration: underline; ">http://www.matronics.com/contribution
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[quote][b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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rv10(at)sinkrate.com
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| Posted: Wed Sep 10, 2008 7:03 am Post subject: power off glide and descent rate |
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I’d tell you mine but I need to get busy attaching the wings and motor! Any response from a “Rob” will do of course J but I was thinking Rob Hickman but obviously didn’t make that clear…
THX
-Ben
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Rob Kermanj
Sent: Wednesday, September 10, 2008 2:48 AM
To: rv10-list(at)matronics.com
Subject: Re: power off glide and descent rate
There are couple of Robs on the list ,I think. I have done the testing but won't have access to them until next week. I'll be happy to tell you mine if you tell me yours!
On Sep 9, 2008, at 11:33 PM, Ben Westfall wrote:
What sort of numbers are people seeing for best glide speed and rates of descent? I’m curious if there is an appreciable difference between the 2-blade descent rate and the 3-blade descent rate in a power off glide? Rob have you done any testing in this arena with the hartzell? If so do you know what your descent rate is? All this talk about cruise performance between the 2 and 3 bladed guys but so far we haven’t discussed the “oh s**t” performance.
-Ben Westfall
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href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
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RobHickman(at)aol.com
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| Posted: Wed Sep 10, 2008 9:57 am Post subject: power off glide and descent rate |
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I have not tried to measure it and I don't have enough experience flying another RV-10 with the two blade prop. Dan Benua and I flew both my RV-10 and his RV-10 on Sunday practicing IFR approaches and he felt that my RV-10 had more braking (prop drag) in the pattern. I am currently using the RV-10 for IFR training and flying over 5 hours a week with an instructor. I am finding that the 90 kts flap speed is pretty slow and the drag from the prop helps.
In practicing engine out landings in the RV-10 I have not noticed a big difference between it and my RV-4. The fine pitch stop adjustment on the prop will also make a big difference in glide performance. When I switched from the 7660 Hartzell to the composite two blade Hartzell (same large blades as on my RV-10) in my RV-4 I lost a lot of the braking that I had been used to. I am not sure if it is because of the fine pitch stop or that the large blades have more thrust at idle rpm settings.
Rob Hickman
N402RH RV-10 85 Hours
Psssst...Have you heard the news? There's a new fashion blog, plus the latest fall trends and hair styles at StyleList.com.
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