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Post by coenraad on Mar 24, 2010 23:51:21 GMT -5
Here a movie i made of a takeoff from Wellington, this time i skipped filming me taxiing. I now have a new video edit program, so the movie is allot higher in detail. If you watch it on youtube (double click on the movie. And use p480 you can easy see it fullscreen This is just a rouch unedited movie. As i wanted to test my new program. Hope you like it.
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Post by ashaman on Mar 25, 2010 9:35:43 GMT -5
You took off at blowers off? Is it even legal?
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Post by sunny9850 on Mar 25, 2010 20:23:01 GMT -5
1. It's definitely legal ... as there is no rule that you have to use full power for takeoff. Just enough power to get safely airborne and comply with any airport restrictions. So if you have a light airplane and plenty of runway you can do what ever you want.
2. I would not be too surprised if the remaining Connies flying today would be doing exactly that provided that weight and runway allow for that operation. It will save the engines and therefor a lot of money.
Stefan
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Post by coenraad on Mar 26, 2010 0:01:06 GMT -5
Euhm, in the kneepad checklist, it clearly shows blowers on After! takeoff, i am merely following that list.
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Post by stansdds on Mar 26, 2010 6:10:25 GMT -5
I think the primary problem with taking off with less than full power is if you were to crash. You would have to have a good answer for the FAA and/or NTSB as to why you did not use full power. So far, neither agency has investigated any crashes in FlightSim... so far.
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Post by Tom/CalClassic on Mar 26, 2010 9:40:36 GMT -5
I'm not sure what people mean as "Blowers off". AFAIK there is no such setting - they are either in LOW or HIGH. There is no "neutral".
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Post by Pixel Pilot on Mar 26, 2010 10:25:43 GMT -5
I have noticed that the supercharger controls are in what's marked as an "off" position by default when the airplane is loaded. I move them into low blower prior to takeoff and have noticed that the manifold pressure doesn't increase just by moving the controls.
Ed
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Post by ashaman on Mar 26, 2010 12:37:42 GMT -5
As Ed says, the real plane might have had two positions, Low and High, but the sim plane has 3 positions, Off being the default spawning position. When I take off, I usually press the SM key for optimal mixture, and this engages the blowers at Low, where I leave them for all the take off. That was were my question came from. This begs a question though: if the plane had no Disengage positions on the blowers... why does the sim plane have one?
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Post by sunny9850 on Mar 27, 2010 0:18:02 GMT -5
I'll actually have to go back to the copious documentation that we have for the Connie systems to see if we may have a small technical snafu there with the blowers regarding the disconnect position.
But for a normal takeoff they should be in the low speed position. Actually the blowers are checked in both the LB and HB positons during the runup and then remain in the LB position for Takeoff.
That said..while you certainly would not use minimal power to takeoff it is perfectly acceptable to use less than MAX power if conditions allow. Especially if for example you simulate a flight of a classic airplane in todays environment flown for an airshow or if you are so lucky pleasure.
C-46 China Doll certainly does not takeoff with Max power when the CAF takes her out of Camarillo and the B-25 "In the Mood" that was based at my home airport also used less than MAX power when going out for a pleasure flight.
These airplanes are far below their original MTOW and just like you hopefully do not mesh the gas pedal down as if you were at the Grand National Finals to go from one red light to the next on your way to the grocery store the crew in command of the airplane takes into account the Wx conditions, runway length, Weight and terrain around the airport.
Stefan
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Post by coenraad on Mar 28, 2010 15:10:50 GMT -5
I also read somewhere that full power would wreck the engines, due to the difference in octane levels in the modern fuels we use now. The octane is lower now, so you cannot go full out for some reason.
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Post by sunny9850 on Mar 28, 2010 18:46:22 GMT -5
That is definitely true since you can't get 135/145 octane fuel with exception maybe at the Reno Air Races. So yes in order to prevent engine damage you can not use the original Max power anymore.
Stefan
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Post by Lockheed on Mar 28, 2010 18:52:53 GMT -5
Most of the places I fly the Connie to, I can get 135/145 fuel.
[That's in the Sim of course !! ;D ;D]
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Post by PeteHam on Mar 28, 2010 20:01:22 GMT -5
Apart from the technicalities of power settings , you were a brave man to be flying out of Wellington then. We had gale force winds blowing through the capitol with speeds reaching 60 - 70 kts Pete.
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Post by ashaman on Mar 29, 2010 8:51:43 GMT -5
I also read somewhere that full power would wreck the engines, due to the difference in octane levels in the modern fuels we use now. The octane is lower now, so you cannot go full out for some reason. Replace the engines with Diesel ones and you're set. ;D Better than replacing them with turbines any day.
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Post by sunny9850 on Mar 29, 2010 21:30:17 GMT -5
Most of the places I fly the Connie to, I can get 135/145 fuel. [That's in the Sim of course !! ;D ;D] LOL and you don't even have to go bankrupt in the process of buying a few thousand gallons Btw..can you shed light on the Supercharger System in the Connie. Was there a regular disconnect position (no cabin pressurization either in this case I think) or was there only the LB and HB position ?? Stefan
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