Incidence meters

[Brian Young]

My bet for figuring the incidence is as described
below, measure from a table. But if you need something
other than zero how about set it at zero then do the
math for the wing adjusters and turn to give the
incidence required.

--- Kenneth Blackwell <kblackw at snowhill.com> wrote:
> Paul,
> 
> The line that you mentioned is the "zero thrust
> line" and it is determined
> by the designer when the airplane is laid out. If
> you are starting with a
> kit, the kit manufacturer should provide information
> that will allow you to
> set up the incidences corectly. Sometimes this is
> accomplished by specifying
> how to set the fuselage up on a flat surface, by
> blocking up the tail a
> specified amount. Then, you can measure up from that
> flat surface to the LE
> and TE....and calculate the incidence angle with
> trig....etc. etc. Another
> way that manufacturers specify the incidences is by
> scribe lines or mold
> lines on the sides of the fuselage.
> 
> In the end, the most accurate way to determine
> incidences is by measuring
> LE/TE from a good flat surface....as Jerry Budd has
> already stated earlier.
> We need to be able to set incidences to an accuracy
> of about 0.1 deg and
> this just isn't possible with any of the devices
> mentioned...so far.
> 
> Cheers,
> 
> Ken Blackwell
> 
> ----- Original Message -----
> From: "Paul Lawrence" <pwl45 at yahoo.com>
> To: <discussion at nsrca.org>
> Sent: Wednesday, May 21, 2003 7:56 AM
> Subject: Re: Incidence meters
> 
> 
> > Speaking of incidence, what is the best way to
> find the thrust line for
> > measuring the incidence?
> >
> > ----- Original Message -----
> > From: "David Wartel" <dwartel at attbi.com>
> > To: <discussion at nsrca.org>
> > Sent: Tuesday, May 20, 2003 11:23 PM
> > Subject: Re: Incidence meters
> >
> >
> > > The book, "Building a Pattern Airplane" has a
> how-to on building a very
> > > accurate incidence meter from a digital level
> and parts from a Robart
> > > incidence meter. I obtained a digital level at a
> reasonable price on
> > E-bay.
> > >
> > > Here's the link to where you can buy the book,
> which is excellent.
> > >
> > > http://www.ranchcreek.com/airplane/default.htm
> > >
> > > Dave
> > >
> > >
> > > ----- Original Message -----
> > > From: "Ron Van Putte" <vanputte at nuc.net>
> > > To: <discussion at nsrca.org>
> > > Sent: Tuesday, May 20, 2003 11:11 PM
> > > Subject: Re: Incidence meters
> > >
> > >
> > > >
> > > >
> > > > ORLANDO FRETS wrote:
> > > >
> > > > >I'm looking to buy an incidence meter. Can
> anyone shed some
> experience
> > > with the Great Plane laser and the Robart type.
> Which is a good
> > > recommendation?
> > > > >
> > > > >
> > > > >
> > > >
> > > > Get Jerry Budd's laser meter.  It's not cheap,
> but is very good.
> > > >
> > > > Ron Van Putte
> > > >
> > > >
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=====
Brian Young
Tulsa
b4598070 at yahoo.com
918-745-6046h
918-838-0900w

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