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07-10-2012, 10:06 AM
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Join Date: Jan 2005
Location: Ottawa, Canada
Posts: 2,357
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Quote:
Originally Posted by dlloyd3
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.
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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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07-22-2012, 09:13 AM
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Join Date: Apr 2007
Location: phx
Posts: 61
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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

__________________
Mike Poulsen
Phoenix
RV 6 TURBO
N 694 MP
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07-22-2012, 10:11 AM
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Join Date: Jan 2005
Location: Richmond, VA
Posts: 696
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Impressive fuel efficiency on those last 2 shots.
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Don Alexander
Virginia
RV-9A 257SW Purchase Flying - O-320, Dynon D100
RV-9A 702DA (reserved) Finish Kit IOX-340
www.propjock.com
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07-22-2012, 10:20 AM
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Join Date: Feb 2007
Location: Fresno, CA
Posts: 321
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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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Timothy Cone
Sierra Skypark (KE79) Fresno CA
RV-8, XP360, RV200
Flown Sept. 12, 2007
1600 hours on the hobbs and loving it
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07-22-2012, 11:29 AM
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Join Date: Dec 2008
Location: Los Angeles, CA
Posts: 301
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Vne is important to glider guiders
Quote:
Originally Posted by dlloyd3
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.
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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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John
2016 dues paid since 2008
- High hopes fade on a warm hearth stone,
he travels the fastest who travels alone-Kipling
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07-23-2012, 10:03 AM
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Join Date: Apr 2007
Location: phx
Posts: 61
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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 "
__________________
Mike Poulsen
Phoenix
RV 6 TURBO
N 694 MP
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08-11-2012, 04:53 PM
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Join Date: Apr 2007
Location: phx
Posts: 61
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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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Mike Poulsen
Phoenix
RV 6 TURBO
N 694 MP
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08-11-2012, 05:36 PM
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Join Date: Apr 2007
Location: phx
Posts: 61
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Hope the hail dont hit the Airport
Wauw hail storm close to krap hope the plane is ok

__________________
Mike Poulsen
Phoenix
RV 6 TURBO
N 694 MP
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08-12-2012, 08:35 PM
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Join Date: Apr 2007
Location: phx
Posts: 61
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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

__________________
Mike Poulsen
Phoenix
RV 6 TURBO
N 694 MP
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08-12-2012, 09:18 PM
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Join Date: Sep 2006
Location: (2OK2) OK City, OK
Posts: 381
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Better than cars! :)
Quote:
Originally Posted by mike in phx
...Better than most " cars "
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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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