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FEJ BAe Hawk 1:4,5 -CG - 5/22/2013 3:06 PM   
Jet-Michi


 

Posts: 11
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Joined: 11/24/2006
Last Login: 5/23/2013
From: Tuttlingen, GERMANY
Status: offline 		...here are some pictures of our new fej hawk cockpit - lot of work but looks good - can anybody tell us the best CG for flying? -thanks a lot. best regards from germany









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RE: FEJ BAe Hawk 1:4,5 -CG - 5/22/2013 3:22 PM   
DiscoWings



Posts: 1169
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From: Baton Rouge, LA, USA
Status: offline 		wow that cockpit looks nice where did you get it and how much?

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RE: FEJ BAe Hawk 1:4,5 -CG - 5/22/2013 3:43 PM   
Ali



Posts: 4696
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From: Northamptonshire , UNITED KINGDOM
Status: offline 		Stunning work on that Cockpit.

My centre of gravity test for the hawk is to have it assembled with no fuel but hopper full. Tilt it so the nose wheel is off the floor and the rear ventral fins are just touching the ground. Release the rudder and the nose should drop down to the ground nice and gently. This is a safe setting, you can fine tune from there. I have flown with Hawks where when I do this test the back stays on the ground but I found it too sensitive on the elevator. If the nose falls to the ground hard, I found it a little nose heavy, which was not too much of a problem with the Hawk, it just means a slightly faster landing speed. I hope this helps?
Regards Al

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RE: FEJ BAe Hawk 1:4,5 -CG - 5/22/2013 6:34 PM   
FenderBean



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From: midland city, AL, USA
Status: offline 		nice work


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RE: FEJ BAe Hawk 1:4,5 -CG - 5/22/2013 6:56 PM   
rbxbear44


 

Posts: 1123
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From: Canton, GA, USA
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quote:

ORIGINAL: Ali

Stunning work on that Cockpit.

My centre of gravity test for the hawk is to have it assembled with no fuel but hopper full. Tilt it so the nose wheel is off the floor and the rear ventral fins are just touching the ground. Release the rudder and the nose should drop down to the ground nice and gently. This is a safe setting, you can fine tune from there. I have flown with Hawks where when I do this test the back stays on the ground but I found it too sensitive on the elevator. If the nose falls to the ground hard, I found it a little nose heavy, which was not too much of a problem with the Hawk, it just means a slightly faster landing speed. I hope this helps?
Regards Al


If you are looking for an actual point to start with Ali's great way of doing this....look at about 230mm from the front tip of the wing root, NOT the fuse farings. If you do use a CG structure, be certain to take the vertical stands out the end of the main outer gear door since there is some good structure there to settle the weight of the plane on.

What Ali is saying is a great way but this might give you a starting point if you are wanting a measurement.

Rex

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RE: FEJ BAe Hawk 1:4,5 -CG - 5/23/2013 7:14 AM   
Jet-Michi


 

Posts: 11
Score: 100
Joined: 11/24/2006
Last Login: 5/23/2013
From: Tuttlingen, GERMANY
Status: offline 		thank you guys - this will help me.

@discoWing - the cockpit is all selfmade. Pilot is from Skymasterjet.

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