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lessdragprod(at)aol.com
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 Posted: Tue May 25, 2010 11:16 am Post subject: Rocket - your TAS and stall speeds? Not book figures, I mea |
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Hi Andrew,
You need to ask this directly of Tom Gummo. Tom loves his HR2. But his claim is that he has the "world's slowest" Rocket.
I thought I found one slower than his, but it wasn't slow enough. 192 knots at 8,000' DENSITY ALTITUDE, full throttle and best RPM.
BTW, 2500 RPM may not provide the fastest speed.
A RV-10 with the IO-540 engine and a 3 blade MT propeller was 1 knot faster at 2300 RPM (15 gph) than at 2500 RPM (20 gph).
The Hartzell "D" blade propeller will probably have peak airspeed RPM, and I have seen this RPM decrease with increased altitude.
(Perhaps this is too much information?)
Regards,
Jim Ayers
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danweseman(at)yahoo.com
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| Posted: Tue May 25, 2010 12:39 pm Post subject: Rocket - your TAS and stall speeds? Not book figures, I mea |
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192 KTS true dosnt seem to bad to me? Thats 222 mph , at 15 gph that is 14.8 MPG Sound great to me..... What is typical GPH at 200 mph ?
Dan Weseman
danweseman(at)yahoo.com
www.flycleanex.com
www.fly5thbearing.com
From: "lessdragprod(at)aol.com" <lessdragprod(at)aol.com>
To: rocket-list(at)matronics.com
Sent: Tue, May 25, 2010 10:02:39 AM
Subject: Re: Rocket-List: Rocket - your TAS and stall speeds? Not book figures, I mean - yours
Hi Andrew,
You need to ask this directly of Tom Gummo. Tom loves his HR2. But his claim is that he has the "world's slowest" Rocket.
I thought I found one slower than his, but it wasn't slow enough. 192 knots at 8,000' DENSITY ALTITUDE, full throttle and best RPM.
BTW, 2500 RPM may not provide the fastest speed.
A RV-10 with the IO-540 engine and a 3 blade MT propeller was 1 knot faster at 2300 RPM (15 gph) than at 2500 RPM (20 gph).
The Hartzell "D" blade propeller will probably have peak airspeed RPM, and I have seen this RPM decrease with increased altitude.
(Perhaps this is too much information?)
Regards,
Jim Ayers
--
| | - The Matronics Rocket-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:
http://www.matronics.com/Navigator?Rocket-List |
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