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  #71  
Old 07-10-2012, 10:06 AM
Kevin Horton's Avatar
Kevin Horton Kevin Horton is offline
 
Join Date: Jan 2005
Location: Ottawa, Canada
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Quote:
Originally Posted by dlloyd3 View Post
Okay, I understand the need to treat use the true airspeed Vne limitation to avoid flutter. What I don't understand is why I have never ever seen this mentioned in any magazine or flight training material regarding certified airplanes. Piper, Beech and Mooney (older, non-turbo) seem to treat Vne as an indicated airspeed limitation.
It is all a question of how the aircraft is designed, and exactly what it is that requires VNE to be where it is. In general, type-certificated light aircraft have VNEs that are defined as a specific calibrated airspeed value. The manufacturer has shown that the aircraft is free from flutter to VNE + some margin, at all approved altitudes.
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  #72  
Old 07-22-2012, 09:13 AM
mike in phx mike in phx is offline
 
Join Date: Apr 2007
Location: phx
Posts: 61
Default More high alt test

Today i was just trying to set up a nice high alt cruise and se what i could get non turbo

Non turbo

And 48 % power
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  #73  
Old 07-22-2012, 10:11 AM
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Impressive fuel efficiency on those last 2 shots.
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  #74  
Old 07-22-2012, 10:20 AM
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tcone1 tcone1 is offline
 
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Location: Fresno, CA
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There's nothing wrong with the efficiency in the first photo either...

I'd love to see 189 KNOTS on 9 gallons per hour.
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  #75  
Old 07-22-2012, 11:29 AM
johnny stick johnny stick is offline
 
Join Date: Dec 2008
Location: Los Angeles, CA
Posts: 301
Default Vne is important to glider guiders

Quote:
Originally Posted by dlloyd3 View Post
Okay, I understand the need to treat use the true airspeed Vne limitation to avoid flutter. What I don't understand is why I have never ever seen this mentioned in any magazine or flight training material regarding certified airplanes. Piper, Beech and Mooney (older, non-turbo) seem to treat Vne as an indicated airspeed limitation.
Well, I had this training during my private pilot glider and during the bi-annual glider reviews. This was a recurring theme during my glider days because gliders frequently run into this high and fast in wave. For power, I guess most instructors figure the generic spam can can't get there anyway so why confuse the students?
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  #76  
Old 07-23-2012, 10:03 AM
mike in phx mike in phx is offline
 
Join Date: Apr 2007
Location: phx
Posts: 61
Default Mpg with turbo

So if you look at mpg and calculate it from true air speed because we dont know where the wind is going to be blowing any given day
@ 17500 feet running 190 kt true mpg is about 24
@ 17500 feet running 162 kt true mpg is about 29
@ 17500 feet running 131 kt true mpg is about 32

This is converting to mph and mpg
Better than most " cars "
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  #77  
Old 08-11-2012, 04:53 PM
mike in phx mike in phx is offline
 
Join Date: Apr 2007
Location: phx
Posts: 61
Default Kdvt to krap via klxv

So wheels up at 5 am going to sturgis for the bike ralley 2 hours and 26 min to leadville got that crossed of on my bucket list and gas was only $4.95 Andy the airport manager was very nice.just for the fuel its worth it to go
During runup i set the map to 26 inches and takeoff was no problem
After that it was on to rapid city total flight time was kdvt klxv krap 4:27
I planned the trip at 180 ktas aopa said 4:26 so i guess it was close
Fuel for 759 nm was 42g
Temp in phx this morning at 5 am 94 rapid city at 4 pm 75
It is so nice to cool off
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  #78  
Old 08-11-2012, 05:36 PM
mike in phx mike in phx is offline
 
Join Date: Apr 2007
Location: phx
Posts: 61
Default Hope the hail dont hit the Airport

Wauw hail storm close to krap hope the plane is ok

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  #79  
Old 08-12-2012, 08:35 PM
mike in phx mike in phx is offline
 
Join Date: Apr 2007
Location: phx
Posts: 61
Default Plane was ok

The plane was ok after the hail storm. KRAP to KLXV was just 2:00:35
No sign of andy but we filled up with $4.95 fuel and then bag to KDVT flight time total was 4:38:26 so a little cross wind slowed us down but not bad at all and i got to se mount rushmore small diviation from the curse



On the ground in leadville


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  #80  
Old 08-12-2012, 09:18 PM
dlomheim dlomheim is offline
 
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Location: (2OK2) OK City, OK
Posts: 381
Default Better than cars! :)

Quote:
Originally Posted by mike in phx View Post
...Better than most " cars "
I should hope so!!! I haven't heard of any cars that will do 131 kts and still get 32 mpg!!!
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