Nick and Shawn
The D-10 needs three tubings to the pitot if you are going to use the AOA. Two
if you are not. It needs no wiring unless you are going to use a pitot heater.
Tom Friedland
Shaun Simpkins wrote:
> Call or e-mail them! They respond quickly. I did ask about whether the D10
> was usable with an existing pitot, and they said yes - however.
>
> They are considering using the aoa info from the probe to do some airspeed
> corrections
> which should make the unit more accurate when the a/c is at high alpha.
>
> >From this you can deduce that:
> 1. The electrical cabling in their website picture is the pitot heater
> 2. The pitot output is pressure. The probe design is based on work
> done at NASA
> in the 70s. I'm not sure if two additional lines are run for AOA,
> or if raw airspeed is sensed from the sum of two ram port
> pressures, and AOA from
> the difference. In any case, the sensors are most likely in the
> instrument.
> They're also using an oven to eliminate temperature sensitivity,
> which would probably
> make sensors in the pitot impractical.
>
> Shaun
> A207
> ----- Original Message -----
> From: "Nick Hammond" <nick.hammond@saabsystems.com.au>
> Subject: RE: The Solid-State Gyro PDA
>
> >
> > tonyk@kaon.co.nz wrote on 22 October:
> > > I had a look at the Crossbow unit at Oshkosh and wasn't very impressed.
> > > ...
> > > The Dynon developments unit on the other hand is a real work of art and
> > > is worth looking at.
> >
> > Particularly at the price. It would be fun to roll one's own EFIS using
> the
> > Crossbow AHRS as a basis but at the around the same price as the complete
> > Dynon unit, it would be hard to justify.
> >
> > BTW, can anyone confirm that Dynon's AOA Probe has electrical outputs
> (i.e.
> > that it only needs additional wiring in the wing rather than more
> plumbing).
> > Hard to tell from their web site.
> >
> > Regards,
> >
> > Nick Hammond
> > XS Monowheel 418
> >
>
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