Reminds me a situation back in the 70's. We got a call from a guy who had
just bought a used Hughes 500C helicopter. He said the A/C would not
perform per the spec.'s in the Flight Manual and the engine checked out, so
it had to be our airframe that was causing the problem. Did a bit of
troubleshooting over the phone, I asked about blade condition, but neglected
to ask if they were clean and waxed.
Well, I took a little trip up to Oregon to see if I could help out. Seems
the A/C was stored in a hangar that had a lot of birds in it. Bird crap was
all over the blades. We washed and waxed the blades and hook weight
improved about 400 pounds! Boy, was he red faced! He bought me a very nice
dinner though. LOL
Dale C.
highwa y fuel costs
In reference to the critical wing. Years ( lots a years ) ago when I was
flying piston helicopters, gross weight was not something you thought about
but rather how much you could lift. When a very heavy lift would come, I
would clean all the bugs off the blades and wax them. Then you could lift
more than the next guy and therefore always had a job. That probably gives
a demo of how laminar separators can be effective. Then in later years
flying jets, vortex generators greatly changed the flying characteristics,
especially at flow separation. I would think the very fast guys are or
should spend as much time with drag/lift and airflow as they do with
engines.
Bob in Canada
----------------------------------------------------------------------------
The information transmitted is intended only for the person or entity to
which it is addressed and may contain confidential and/or privileged
material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or
entities other than the intended recipient or employees of
MD Helicopters, Inc. is prohibited. If you received this in error, please
contact the sender by email and delete the material from any computer..
///
/// land-speed@autox.team.net mailing list
/// To unsubscribe send a plain text message to majordomo@autox.team.net
/// with nothing in it but
///
/// unsubscribe land-speed
///
/// or go to http://www.team.net/cgi-bin/majorcool
///
///
|