Search: Posts Made By: jluther
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Forum: Aerodynamics
08-13-2010, 04:38 PM
Replies: 20
Views: 4,200
Posted By jluther

Steve, Yes I'll send I'll upload a slide...

Steve,

Yes I'll send I'll upload a slide show and send you the link.

Jerry
Forum: Aerodynamics
08-12-2010, 05:53 PM
Replies: 20
Views: 4,200
Posted By jluther

Steve, It's been a few weeks since our last...

Steve,
It's been a few weeks since our last exchange. My plane is flying perfectly now with all your help. I've flown over 20 missions several over water and one in 7 mph gusting winds with complete...
Forum: Aerodynamics
07-05-2010, 05:03 AM
Replies: 20
Views: 4,200
Posted By jluther

I moved the CG back 1.5 mm for a smooth recovery...

I moved the CG back 1.5 mm for a smooth recovery to glide. Than slowly lowered the up-elevator trim to a normal flat position while maintaining the even recover to a glide.

jerry
Forum: Aerodynamics
07-04-2010, 04:02 AM
Replies: 20
Views: 4,200
Posted By jluther

Steve, I got a chance to test fly this...

Steve,

I got a chance to test fly this afternoon. I made no changes to any settings and did the dive CG test. It went into a steep stall and continued to oscillate. So I kept reducing the...
Forum: Aerodynamics
07-02-2010, 06:37 PM
Replies: 20
Views: 4,200
Posted By jluther

Great diagram. If the indicated thrust angle...

Great diagram. If the indicated thrust angle shown is the one suggested than I had it wrong on my first attempt with my back-up plane.
Forum: Aerodynamics
07-02-2010, 05:37 PM
Replies: 20
Views: 4,200
Posted By jluther

Steve, That's got my concern focused now. If...

Steve,

That's got my concern focused now. If the plane is balanced why do I have so much up elevator trim? I'll do that test when the rain lets up here. I would rather have a thrust off-set than a...
Forum: Aerodynamics
07-02-2010, 03:44 AM
Replies: 20
Views: 4,200
Posted By jluther

Gentlemen, So todays test. I closely examined...

Gentlemen,
So todays test. I closely examined my balance points and found that they were 1 t0 1.5 mm forward from specification. Interestingly it's that critical, the balance is a few degrees nose...
Forum: Aerodynamics
07-01-2010, 03:39 PM
Replies: 20
Views: 4,200
Posted By jluther

Great suggestions. I'll test flight this morning,...

Great suggestions. I'll test flight this morning, looks like still air, and report the results.

This weekend I have three flight missions over water and one off and on a small area and over a 500...
Forum: Aerodynamics
07-01-2010, 12:30 AM
Replies: 20
Views: 4,200
Posted By jluther

The plane specs out at 28 oz. and is a very light...

The plane specs out at 28 oz. and is a very light floaty trainer with a wing-loading of 10 oz. per sq. ft. My modifications including the camera take it to 32 oz. with a wing-loading of 12.5 oz. per...
Forum: Aerodynamics
06-30-2010, 10:02 PM
Replies: 20
Views: 4,200
Posted By jluther

It feels and flies like an angle of attack...

It feels and flies like an angle of attack problem, but when I put straight edges on the stab and wing they line up as specified. I'll give all the leading edges a check for warp and twist.
Thanks...
Forum: Aerodynamics
06-30-2010, 08:12 PM
Replies: 20
Views: 4,200
Posted By jluther

Problem establishing sweet spot trim in mod Easy Star

I use Easy Stars in my aerial photography business. I've modified them to carry my cameras and perform well. With all the modifications I still use the specified CG and a 1 1/2 oz. tail weight to...
Showing results 1 to 11 of 11


 
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