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  #1  
Old 03-30-2019, 08:09 AM
727TT 727TT is offline
 
Join Date: May 2016
Location: Granbury TX
Posts: 36
Default Take off and landing performance charts.

Does anyone have a TO and land perf chart for RV7A, 0360 fixed pitch?
I want to calculate high density take off performance.

Thanks!

Steve
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  #2  
Old 03-30-2019, 09:40 AM
727TT 727TT is offline
 
Join Date: May 2016
Location: Granbury TX
Posts: 36
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I've looked at a number of owners manuals and have not found anything.

Is there a "rule of thumb" for every 1,000 feet of density altitude equals another 120 feet of take off runway required?
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  #3  
Old 03-30-2019, 10:49 AM
David Paule David Paule is offline
 
Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,435
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A long, long time ago, I obtained a couple of Denalt Performance Computers. These circular slide rules are used to estimate the take off and climb performance for an airplane with a normally-aspirated engine. There is one for a fixed-pitch prop and one for a constant speed prop.

You set the air temperature and against the pressure altitude scale, read a factor to multiply against sea level performance. For example, 6,000' pressure altitude and 100 F, the take off distance increases 2.9 times and the rate of climb is 24% of sea level's.

At this temperature, the slide rule only goes up to 6,000 feet, unfortunate here in Colorado as we have airports higher than that.

This suggests that you might be able to find something equivalent, perhaps an on-line calculator, that provides similar estimates.

Dave
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Old 03-30-2019, 11:19 AM
flyinga flyinga is offline
 
Join Date: Dec 2007
Location: Fredericksburg, TX
Posts: 662
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Koch chart.
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Jim Averett
RV-8
TS36 - Silver Wings
Fredericksburg, TX
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  #5  
Old 03-30-2019, 11:25 AM
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ChuckGant ChuckGant is offline
 
Join Date: Oct 2015
Location: Collierville, TN (M41)
Posts: 120
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Maybe this app will meet your needs. The only downside is that it is in meters instead of feet.

https://itunes.apple.com/bw/app/take...332633556?mt=8

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Last edited by ChuckGant : 03-30-2019 at 11:45 AM.
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