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Nanchang MAUW
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barryhancock



Joined: 09 Oct 2008
Posts: 285

PostPosted: Wed Feb 22, 2012 7:52 am    Post subject: Re: Nanchang MAUW Reply with quote

I have found that you have to stay ahead of the imbalance from early on in the flight. As soon as one of the tanks comes off 60, watch every 5 minutes or so to see when the other one comes off and attempt to keep them balanced with excess yaw and the fuller wing tank high. You might think this cuts down your TAS dramatically, but I have found it to only be a couple of knots difference. Waiting until the tanks are low to fix things is too late...

Happy slipping,

Barry


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jacques



Joined: 06 May 2009
Posts: 26
Location: Pessac, France

PostPosted: Thu Jan 27, 2022 11:44 am    Post subject: Re: Nanchang MAUW Reply with quote

Not possible to use a fuel valve with 2 (or 3 if you have a 3rd tank) to choose your tank in flight, like on Piper's, Cessna, etc?

Just have to remove the collect tank, maybe individual air vent, cancel the cut off fuel valve using the off position of the new one and why not an electric fuel pump.


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woodja51



Joined: 13 May 2015
Posts: 34
Location: MELBOURNE AUSTRALIA

PostPosted: Thu Feb 10, 2022 12:47 pm    Post subject: Re: Nanchang MAUW Reply with quote

At the Nanchang conference the Chinese engineers mentioned a MTOW of around 1650 kg being the end test point. I would assume that 1400 probably came about from a combination of wear and tear / gear loadings and the fact that with full fuel , two pax at 100 kg you pretty much hit 1400kg. So why pay higher landing fees for no reason. The other reason might be the stall speed of 59-60 knots might keep the aircraft within the risks associated with the category of aircraft ( we call it permit index etc in OZ) .. so in all practicalities , pushing the weight up anything up to 250 kg is probably of little real effect - on both airframe / gear in normal use. It might have some effect on fatigue in the long run. The other point to note is that the CoG envelope also has an expanded envelope which I used in my re-weigh a few years ago. It meant I didn’t need as much ballast to replace the ADF gear removed etc. By the way , for those who have lead ballast in the tail frame , make sure you check it for cracking. My LAME found a crack in the aft frame last inspection. Check rudder balance as well ! …

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Ttail



Joined: 24 Jun 2013
Posts: 106

PostPosted: Thu Feb 10, 2022 1:43 pm    Post subject: Re: Nanchang MAUW Reply with quote

What is this "expanded" C of G envelope of which you speak Wodja ? love to see some details.

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carl.rueck(at)gmail.com
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PostPosted: Fri Feb 11, 2022 11:11 pm    Post subject: Nanchang MAUW Reply with quote

Please remove my name from this distribution
Thank you
Carl
Carl-r(at)telus.net.

Quote:
On Feb 10, 2022, at 4:01 PM, Ttail <ttail(at)internode.on.net> wrote:



What is this extended C of G envelope of which you speak Wodja ? love to see some details.

--------
Sean Trestrail
ttail[at]internode.on.net




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=505979#505979











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stephen.hayne



Joined: 01 Nov 2013
Posts: 59
Location: United States

PostPosted: Sat Mar 05, 2022 1:09 pm    Post subject: Re: Nanchang MAUW Reply with quote

cjpilot710(at)aol.com wrote:
At some point in the future I plan on adding an adjustable rudder trim.

I have adjustable rudder trim and it makes no difference. Still feeds from the left. I also have 2-axis Dynon autopilot (ailerons and elevator). Still feeds from the left...


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Stephen Hayne, Cyber Security Consultant, Professor Emeritus (retired)
443LM Nanchang CJA
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