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Re: PSS AOA sensor position standardization

Subject: Re: PSS AOA sensor position standardization
From: LTS <lts@avnet.co.uk>
Date: Wed, 20 Mar 2002 08:40:15
For this reason I think it's advisable to have a stall warner or AOA
indicator. Something which responds to aircraft weight, flaps and attitude
rather than just flying on the ASI. I know after lots of hours people get to
know their aircraft and fly different climb and approach speeds for
different weights but I feel far happier with a simple stall warner that
tells me when I am pushing a bit close to the limits. I fly from grass
fields almost all the time and I am regularly in the circuit with slow A/C
and microlights so often find myself holding back on finals. If you find
yourself heavy on base and turn tighter than usual it could all unfold very
quickly. Better to have a stall warner in my opinion.

Jerry
                    Jerry@ban-bi.com   or    LTS@avnet.co.uk
                    www.Ban-bi.com     or   www.avnet.co.uk/touchdown
----- Original Message -----
From: "Barrington Tennant" <Tennant@t-online.de>
Subject: Re:  PSS AOA sensor position standardization


> Hi Rob,
>
> I have had an airframe buffet on the final turn. It was quite clear and
> with a little power and a push on the stick went away.
>
> I was overweight (long range fual tank and corpulent son) and had to
> follow an ultralight in so was a little slow.
>
> I now never go below 70 kts into the turn to final.
>
> Barry Tennant
>
> Rob Housman schrieb:
> >
> > It's worth the bucks because it can save your bacon.  Using some type of
AOA
> > is the ONLY way you can be sure when the a/c is about to stall (has
anyone
> > out there felt airframe buffet during a base to final turn and lived to
tell
> > about it?), and the PSS "device" has no moving parts which made my
decision
> > to buy it rather easy.
> >
> > Best regards,
> >
> > Rob Housman
> > A070
> >
> > -----Original Message-----
> > From: forum-owner@europaclub.org.uk
> > Behalf Of Richard Iddon
> > Subject: Re:  PSS AOA sensor position standardization
> >
> > Being a relatively inexperienced pilot, I've never come across an AOA
sensor
> > before, just a stall warner on the cherokees & cessna's I learned in.
I've
> > looked at the web site but what are forum members experiences of this
> > equipment, is it worth the bucks and can I get one in the UK?
> >
> > Richard Iddon ( nearly finished my wings) 533
> >
> > -----Original Message-----
> > From: forum-owner@europaclub.org.uk
> > Subject: Re:  PSS AOA sensor position standardization
> >
> > PSS' website is http://www.angle-of-attack.com. The Sport costs $890,
the
> > Professional $1500.
> > The major difference is in the display, and most purchasers ( according
to
> > the company ) buy the
> > Sport, since it gives the same information, including synthesized voice
> > warnings, and it's a whole
> > lot smaller so it fits on the glareshield better.  The Pro has a digital
AOA
> > readout and a more
> > complicated display.
> > The last time I checked with PSS they would sell you the sensor alone
for
> > $450.  I'm not sure if
> > you pay a bit more in total to split your order this way.
> >
> > Has anyone out there used larger I.D. pneumatic tubing for their
> > Pitot-Static runs than the standard
> > 1/4" OD 1/8" ID supplied?
> >
> > Shaun
> > A207
> > ----- Original Message -----
> > From: "Lyle Antieau" <lyle@antieau.org>
> > Subject: Re:  PSS AOA sensor position standardization
> >
> > > I hadn't given the AoA much thought, but am working on my wings and
should
> > > probably figure out what I'm doing before closing them out.  Does PPS
have
> > > a web site?  How much was it for only the sensors?  Does the sport
version
> > > have a stall warning horn?
> > >
> > > Lyle Antieau
> > > A137
> > >
> > > > Just curious, of those that are using the PPS AoA, did you decide on
> > > > the pro or sport versions?  Quite abit difference in cost.  I
purchased
> > > > only the sensors portion of the kit as I have yet to make up my mind
on
> > > > which version.
> > > >
> > > > Erich Trombley
> > > > A028
> > > >
<shauns@hevanet.com>
> > > > writes:
> > > >> Wow, what rapid responses!
> > > >>
> > > >> In my talks with the boss at PSS, I discussed the glider/short
wings
> > > >> conundrum.
> > > >> One needs to add a second EPROM when the wings swap, since the
> > > >> airfoil
> > > >> is different.  If we didn't have flaps, that could have been the
easy
> > > >> switch.
> > > >> Nevertheless, it should be possible to piggyback a small circuit
> > > >> board with
> > > >> an electronic switch onto the original EPROM socket that would be
> > > >> microswitched to an appropriate tang on the wing root.
> > > >>
> > > >> PSS is also in the process of certificating the AOA sport, so the
> > > >> product
> > > >> development is officially "mature", i.e., finished.  There were
some
> > > >> comments
> > > >> from some of my RV friends about the display or warnings being
> > > >> underdamped,
> > > >> which PSS claims has been solved within the last year with V.7 of
the
> > > >> software.
> > > >>
> > > >> Some of you have been irritated that PSS didn't partner with
BlueMnt
> > > >> to
> > > >> put the AOA indicator on-screen.  Aside from there being little
> > > >> incentive
> > > >> for them to do that, on-panel is the wrong place for an AOA.  It
> > > >> needs to
> > > >> be in the pilot's field of view as s/he looks out of the window
> > > >> during
> > > >> landing, which is why you see so many AOA-sports sitting on top of
> > > >> the
> > > >> glareshield.
> > > >>
> > > >> Continue!
> > > >>
> > > >> Shaun
> > > >> A207
> > > >> ----- Original Message -----
> > > >> From: "James H. Nelson" <europajim@juno.com>
> > > >> Subject: Re:  PSS AOA sensor position
standardization
> > > >>
> > > >>
> > > >> > If you check out the positioning by way of the manual, you do not
> > > >> line
> > > >> > the two ports up vertically.  What you do is keep them in line
tip
> > > >> to
> > > >> > trail but off set tip to root.  Does that make sense.  This puts
> > > >> the
> > > >> > ports at the same distance from the leading edge but not the same
> > > >> > distance from the wing tip.  Mine is off set about 2" with the
> > > >> lower port
> > > >> > closer to the root.  My wing is a foam wing and I cut a 6" hole
> > > >> through
> > > >> > the bottom skin and made a flange to put inside to reattach the
> > > >> cover
> > > >> > when I finished the installation.  I then ran my urethane lines
> > > >> out to
> > > >> > the tip and ran them back through the conduit I used for the wing
> > > >> wiring.
> > > >> >  BTW, proprietary Software has a disconnect for their tubes.  I
am
> > > >> > getting mine next week.  I forgot to mention it to Jim at PS to
> > > >> include
> > > >> > it with the kit.   I also sent Jim the way we "operate" our
Europa
> > > >> a/c.
> > > >> > Since we mono wheel drivers have no control for separating flap
> > > >> from gear
> > > >> > extensions and the tri gear drivers only have flaps to operate,
> > > >> I've
> > > >> > asked Jim to help us on our setups to the CPU in the unit.  I
will
> > > >> keep
> > > >> > you up dated.
> > > >> >         Well, I'm doing the final bits to proceed with painting.
> > > >> Which I
> > > >> > should have done for Sun-N-Fun.  I'll be bringing my a/c to the
> > > >> Europa
> > > >> > dinner as one of at least four others.  It will give us all a
> > > >> chance to
> > > >> > see the many varietys we are doing.
> > > >> >
> > > >> >
> > > >> >                               Jim Nelson
> > > >> >
> > > >> >                               A058     N15JN
> > > >> >
> > > >> >
> > > >> writes:
> > > >> > > Shaun:
> > > >> > >             I'm not going either.............:-(
> > > >> > >             I have foam wings, and that seems to be old poo so
> > > >> don't
> > > >> > > think
> > > >> > > I'm topical. I phone the boss at Proprietary and we had a long
> > > >> chat,
> > > >> > > the nub
> > > >> > > of which was you can be inside his limits and the only thing
> > > >> that's
> > > >> > > critical
> > > >> > > is that the two orifices are directly vertical one under the
> > > >> other.
> > > >> > > He said
> > > >> > > the real comparison is between them rather than the proper
> > > >> readings
> > > >> > > of each.
> > > >> > > Hope this softens worries somewhat - sorry I can't speak for
the
> > > >> XS
> > > >> > > models.
> > > >> > > Ferg
> > > >> > > A064
> > > >> > >
> > > >> > >
> > > >> > >
> > > >>
> > > >> > > The Europa Forum is supported by Aviators Network UK
> > > >> > > <info@avnet.co.uk>
> > > >> > > In the event of problems contact
<forum-owner@europaclub.org.uk>
> > > >> > >
> > > >> >
> > > >>
> > > >> > The Europa Forum is supported by Aviators Network UK
> > > >> <info@avnet.co.uk>
> > > >> >
> > > >>
> > > >>
> > > >>
> > > >> The Europa Forum is supported by Aviators Network UK
> > > >> <info@avnet.co.uk>
> > > >
> > > > ________________________________________________________________
> > > >
> > > > The Europa Forum is supported by Aviators Network UK
<info@avnet.co.uk>
> > >
> > >
> > >
> > >
> > > The Europa Forum is supported by Aviators Network UK
<info@avnet.co.uk>
> > >
> > >
> >
> >
> >



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