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Gliding range specs for Nanchang

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skidmk

Joined: 19 Nov 2007
Posts: 171
Location: Ottawa, Ontario

Posted: Tue Apr 29, 2008 4:41 pm Post subject: Gliding range specs for Nanchang

Hi all,,



doing a bit of an aircraft profile for my anywhere map... was looking for gliding specs on the chang?  anyone?



thanks

_________________
Mike "Skidmk" Bourget
Ottawa, Ontario

dougsappllc(at)gmail.com
Guest

Posted: Tue Apr 29, 2008 5:52 pm Post subject: Gliding range specs for Nanchang

Glides like a wet anvil if the prop is not turning.

  

 



 

 On Tue, Apr 29, 2008 at 5:41 PM, skidmk <bourgem(at)cia.com (bourgem(at)cia.com)> wrote:

 [quote]--> Yak-List message posted by: "skidmk" <bourgem(at)cia.com (bourgem(at)cia.com)>

 

Hi all,,



doing a bit of an aircraft profile for my anywhere map... was looking for gliding specs on the chang?  anyone?



thanks



--------

Mike &quot;Skidmk&quot; Bourget

Ottawa, Ontario

 



Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=180147#180147



 

-- 

Always Yakin,

Doug Sapp

Phone 509-826-4610

Fax 509-826-3644   [quote][b]

talew(at)bellsouth.net
Guest

Posted: Tue Apr 29, 2008 6:20 pm Post subject: Gliding range specs for Nanchang

Doug knows from experience. 

 Believe it!

 A careful search of the archives seemed to indicate  that if you throw your car keys out when the engine quits that is your landing  target. Anything else is stretching it .

 Terry 

 [quote]   ---

threein60(at)yahoo.com
Guest

Posted: Tue Apr 29, 2008 6:38 pm Post subject: Gliding range specs for Nanchang

When I had an engine out in my cj, it seemed like the glide ratio was 1 to 1.  It might be more be more but it sure felt like 1 to 1.

Larry



--

cjpilot710(at)aol.com
Guest

Posted: Tue Apr 29, 2008 6:42 pm Post subject: Gliding range specs for Nanchang

I don't remember ever seeing tables on the CJ's gliding distance.  You  could most likely theoretically work it with known figures like gross weight,  airfoil data, and wing area.  A bit out of my league.  However in  playing with my CJ, I found that if I pick a spot on the ground 1/3 the  distance in from the wing tip - I can make that spot in a clean glide, with  a wind-milling engine.  That's for just about any altitude too.   NOTE:  I have an M-14p with a paddle prop.  I suspect the Chinese  metal prop would give you a somewhat better glide.

  

 Jim "Pappy" Goolsby



Need a new ride? Check out the largest site for U.S. used car listings at AOL Autos.

  [quote][b]

jonboede(at)hotmail.com
Guest

Posted: Tue Apr 29, 2008 7:23 pm Post subject: Gliding range specs for Nanchang

I have a friend who's pretty much 100% rotor time... the whole "how do the wings stay on?" thing makes her nervous. Doing any kind of aerobatics brings loud protests (although a carrier break seems to have become an "approved" maneuver).



Power-off gliding seems to be the only "familiar" thing.. because with the power off the Chang has the glide ratio of a helicopter in an auto-rotation.  



Jon



[quote]Date: Tue, 29 Apr 2008 18:49:33 -0700

From: dougsappllc(at)gmail.com

To: yak-list(at)matronics.com

Subject: Re: Gliding range specs for Nanchang



Glides like a wet anvil if the prop is not turning.

  

 



 

 On Tue, Apr 29, 2008 at 5:41 PM, skidmk <bourgem(at)cia.com (bourgem(at)cia.com)> wrote:

  	  Quote: 	
		  --> Yak-List message posted by: "skidmk" <bourgem(at)cia.com (bourgem(at)cia.com)>

 

Hi all,,



doing a bit of an aircraft profile for my anywhere map.. was looking for gliding specs on the chang?  anyone?



thanks



--------

Mike &quot;Skidmk&quot; Bourget

Ottawa, Ontario

 



Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=180147#180147



 

-- 

Always Yakin,

Doug Sapp

Phone 509-826-4610

Fax 509-826-3644    	  Quote: 	
		  



et="_blank">http://www.matronics.com/Navigator?Yak-List

tp://forums.matronics.com

_blank">http://www.matronics.com/contribution



	
	


[b]

viperdoc(at)mindspring.co
Guest

Posted: Tue Apr 29, 2008 8:06 pm Post subject: Gliding range specs for Nanchang

And that comes from a man with first hand experience in testing the engine out glide ratio of a rock.  

Doc  

     

From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of doug sapp

 Sent: Tuesday, April 29, 2008 8:50 PM

 To: yak-list(at)matronics.com

 Subject: Re: Gliding range specs for Nanchang  

  

     

Glides like a wet anvil if the prop is not turning.  

    

   

    



 

    

    

On Tue, Apr 29, 2008 at 5:41 PM, skidmk <bourgem(at)cia.com (bourgem(at)cia.com)> wrote:  

--> Yak-List message posted by: "skidmk" <bourgem(at)cia.com (bourgem(at)cia.com)>

 

 Hi all,,

 

 doing a bit of an aircraft profile for my anywhere map... was looking for gliding specs on the chang?  anyone?

 

 thanks

 

 --------

 Mike &quot;Skidmk&quot; Bourget

 Ottawa, Ontario

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=180147#180147

 

 

 

 

 

  

 -- 

 Always Yakin,

 Doug Sapp

 Phone 509-826-4610

 Fax 509-826-3644    	  Quote: 	
		    http://www.matronics.com/Navigator?Yak-List 	
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       [quote][b]

skidmk

Joined: 19 Nov 2007
Posts: 171
Location: Ottawa, Ontario

Posted: Wed Apr 30, 2008 4:08 am Post subject: Re: Gliding range specs for Nanchang

Wow,, thanks I figured it was a rock by the circuit practices I've been doing.



I've extrapolated some numbers from the chinese "pilot manual", it appears she drops 590feet (converted from meters) for every 1.33 miles forward ,,, thats at 80kts of airspeed.  of course, it doesn't say wind, weight or any of the other variables.



your mileage may vary

_________________
Mike "Skidmk" Bourget
Ottawa, Ontario

tjyak50

Joined: 31 May 2007
Posts: 81
Location: Phoenix, AZ

Posted: Wed Apr 30, 2008 6:29 am Post subject: Re: Gliding range specs for Nanchang

Experiment with the prop control on your next engine out landing practice.

If the engine is windmilling, you most likely have oil pressure and will be up against the low-pitch stops (highest drag).



Pull the prop control all the way back and feel the airplane surge forward as the blades go to the high pitch stops (towards feather).  You can also push it back to the higher drag setting if needed.



If your engine is dead stopped it has probably already sprung itself to this coarse setting against the high pitch stops (low drag).



One client who dead sticked a Nanchang used this trick right at the end of his glide to "jump" a little berm.

Tj

brian-1927(at)lloyd.com
Guest

Posted: Wed Apr 30, 2008 10:27 am Post subject: Gliding range specs for Nanchang

It is quite interesting the lack of useful information to the  

gentleman's original question. (Yes, there were a few useful answers,  

Dennis' sticking in my mind but that was for the Yak-52.)



I don't know how other instructors provide transition training in the  

Yak or CJ but I believe you should have covered this when you got your  

transition training in the aircraft. I specifically address the issue  

by having a segment of training on engine-out performance. It includes  

putting the aircraft into several different configurations (all with  

throttle at idle), specifically:



1. gear up, flaps up, max RPM;

2. gear up, flaps up, low RPM;

3. gear down, flaps up, max RPM;

4. gear up, flaps down, max RPM;

5. gear down, flaps down, max RPM;

6. gear down, flaps up, low RPM.



We get the aircraft into a steady-state glide and measure rate-of- 

descent. This allows the student to get a feel for the drag producers  

in the aircraft. After that we make power off landings from the  

downwind. Later on we calculate glide ratio (when back on the ground).



Power off landings are pretty docile in the CJ with the stock engine  

(they are done flaps-up BTW) but can get pretty exciting in the Yak-52  

with 400hp engine and MT 3-bladed prop. Expect to fly a *very* close  

in pattern with something approaching a 45 degree bank-angle in the  

continuous-turn from downwind to final.



So getting back to the original question, you need to specify  

airframe, engine, prop, and configuration before anyone can give you a  

hard-and-fast answer to your question. My recommendation is that you  

go out and practice power-off landings yourself in order to become  

comfortable with the event. No amount of talk here on this list will  

prepare you.



If you are on the west coast I will be happy to provide instruction  

and act as safety pilot while you learn the techniques. If you are  

somewhere else I strongly urge you to find someone experienced with  

this flight regime to help you practice.



Brian Lloyd                         3191 Western Drive

brianl AT lloyd DOT com             Cameron Park, CA 95682

+1.916.367.2131 (voice)             +1.270.912.0788 (fax)



PGP key ID:          12095C52A32A1B6C

PGP key fingerprint: 3B1D BA11 4913 3254 B6E0  CC09 1209 5C52 A32A 1B6C

Dabear(at)damned.org
Guest

Posted: Wed Apr 30, 2008 1:03 pm Post subject: Gliding range specs for Nanchang

 	  Quote: 	
		   

[much good info deleted]
	


 	  Quote: 	
		  

 Power off landings are pretty docile in the CJ with the stock engine 

 (they are done flaps-up BTW) but can get pretty exciting in the Yak-52 

 with 400hp engine and MT 3-bladed prop. Expect to fly a *very* close  in 

 pattern with something approaching a 45 degree bank-angle in the 

 continuous-turn from downwind to final.


	


The CJ with the M14P and MT prop gets pretty exciting with power off.  It 

should be practiced at altitude first and particular attention should be 

paid to how it flys at lower airspeed.  The combination is wonderful when 

there is power.  Once power is off, don't get slow.  The sink rate is 

impressive.



Dabear

ChangDriver

Joined: 15 Sep 2007
Posts: 266

Posted: Wed Apr 30, 2008 6:19 pm Post subject: Re: Gliding range specs for Nanchang

Hit "Present Position" on the Anywhere Map and that is where you will land.



Craig

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