leogates(at)allvantage.co
Guest
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 Posted: Fri May 05, 2006 5:55 am Post subject: Vortex Generators for CH601HDS - Again |
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List,
I read Michael Mossman's article, Stall Reduction in the 601 HDS, in
Zenair News, issue #153, March/April 2006, with interest. I noted he
had no before and after comparison figures, as he put on Vortex
Generators (VGs) prior to flying his plane. He also gave no TAS figures,
only IAS.
N601Z is unpainted so I figured she was an excellent candidate for some
experimentation. N601Z, without VGs, flies much as Michael described
the flight performance of his plane, with VGs.
I washed N601Z and re-test flew her to verify lift-off, climb, cruise,
low speed handling and stall. I made GS from .025, as per Michael's
article and glued them on.
Flight test report:
Lift-off - no change
Climb - no change
Cruise - no change
Low speed handling - no change
Stall speed - no change 
I sent the following to Zenith: "I need an informed suggestion. Do I
start moving the VGs back and forward to see if I get any positive
results or is this a waste of time?"
Nicolas Hines replied: "I have forwarded you e-mail to Chris..."
When I get a reply I will post it here.
Leo Gates
N601Z CH601HDS TDO
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