REFLECTOR: Static Port
Velocity_AZ
velocity_az at cox.net
Thu Apr 13 12:01:45 CDT 2006
Mine is mounted in front of the canard in clear air - still didn't work.
Kevin
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Donald Royer
Sent: Thursday, April 13, 2006 9:57 AM
To: Velocity Aircraft Owners and Builders list
Subject: RE: REFLECTOR: Static Port
Mine doesn't work either. I think that my problem was that I mounted it
under the canard and I apparently got it too close to the canard and ended
up in disturbed air.
Don Royer
> [Original Message]
> From: Velocity_AZ <velocity_az at cox.net>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Date: 4/13/2006 10:08:12 AM
> Subject: RE: REFLECTOR: Static Port
>
> Yes - the static port never worked. I had to make a static port per
> the plans.
>
> Kevin
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]
> On Behalf Of Alex Balic
> Sent: Thursday, April 13, 2006 9:00 AM
> To: 'Velocity Aircraft Owners and Builders list'
> Subject: RE: REFLECTOR: Static Port
>
> I somehow ended up with one of those fancy schmancy Pitot tubes with
> the static port build in- anyone have any experience with them?
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]
> On Behalf Of Ron Brown
> Sent: Wednesday, April 12, 2006 6:08 PM
> To: Velocity Aircraft Owners and Builders list
> Cc: Glenn Babcock
> Subject: Re: REFLECTOR: Static Port
>
> For those of you who are still building and haven't installed your
> static port, I have an alternate location that seems to work great.
>
> I can't recall who did this originally (Perhaps Malcolm Collier) but
someone
>
> suggested that under the door, just below the duct was an excellent
location
>
> that works without having to do anything other than drill the small 1/16"
> hole. I did this as did Glenn Babcock. Both of our static ports work
very
> well. I have done the high speed passes down the runway (I like 50
> feet which is tree height around here). My altimeter is right on at 165
kts.
No
>
> dams, no trip strips and no raised port - just a little hole.
>
> Ronnie
>
> ----- Original Message -----
> From: "Scott Derrick" <scott at tnstaafl.net>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Sent: Wednesday, April 12, 2006 12:10 PM
> Subject: Calibrating Static Port was: Re: REFLECTOR: Cirrus v.
> Velocity
>
>
> >I agree with Scott B. on the necessity of calibrating the static port.
> >
> > I bought my V and the static port was way off. My altitude was 400
> > ft
off
>
> > at cruise! I don't know how far off my indicated airspeed was but it
must
> > have been bad.
> >
> > The method described below to calibrate is fairly accurate and can
> > be
fun
> > also. Our static ports have a small plate or fence mounted for or
> > aft
of
> > the port, to calibrate you will need to change the thickness and or
the
> > orientation. Flying this is easier and more safely done with a co-pilot.
> >
> > You will be doing some low level flying so either you need to be
> > comfortable with this or have somebody else you trust that is
comfortable
> > with low level flying. Do this at an airport that the tower will
> > let
you
> > do this or an uncontrolled airport that is not to busy. Explain the
> > procedure to the co-pilot so he or she understands the procedure and
> > objective.
> >
> > 1.) set the field elevation in your altimeter when parked near the
runway
>
> > threshold. The readings you are interested in are relative so the
> > absolute reading is not important. Do not use the announced
> > altimeter setting is it does not agree with the your field elevation.
> >
> > 2.) You will need to fly as close to 20 ft AGL as you can. or some
other
> > elevation that can be verified by your co-pilot. I use 20 feet
> > because
the
>
> > large hanger at my field is 20 ft high. It may help to have somebody
on
>
> > the ground verify your height if your unsure when in flight. The
closer
> > to the ground the easier it is the estimate. 100 ft is very tough
unless
> > you have a radar altimeter. Your GPS altitude unless you have WAAS
> > is unreliable for this.
> >
> > 3.) Make a low pass at the prearranged altitude at 90 knots. A
> > trick
to
> > make this a bit safer is to dial in some up trim so it takes a
> > couple pounds of down pressure on the stick to maintain level
> > flight. This way
if
>
> > you get distracted you will tend to climb away from terra firma.
> > note the altitude and speed.
> > 4.) Make a low pass at cruise speed, same altitude. This will
> > usually
be
> > much appreciated by all at the airport with many requests to do
another.
> > Note the altitude and speed.
> >
> > 5.) Land and compare indicated altitude with real altitude. When I
> > did this on my plane I was indicating 400 ft AGL when actually 20 ft
AGl.
> >
> > The plate or fence now will usually need to be adjusted. If its aft
> > of
the
>
> > hole, a thinner(as in height) will reduce the pressure and raise
> > your indicated altitude, thicker will increase the pressure and
> > lower the indicated altitude. If the fence is ahead of the hole the
> > change in thickness is reversed.
> >
> > Make a WAG as to the change needed and fly again. you may need to
adjust
> > to some value between what is indicated during slow flight and cruise.
> > Keep track of the change made so any further adjustments will divide
and
> > conquer the needed adjustment. Do this until your satisfied.
> >
> > Once your altimeter is reading correctly out airspeed should also be
> > relatively closer, unless your pitot is installed in a very bad spot.
> >
> > Fly Safe.
> >
> > Scott
> >
> >
> > Scott Baker wrote:
> >> I have noticed that many Velocity aircraft vary in their indicated
> >> air speed due to either an un-calibrated air speed indicator and
> >> the position of the static port. Calibrating the air speed
> >> indicator at the local
avionics
> >> shop
> >> is a good thing to do - but that still leaves the possibility of
> >> air speed errors caused by the static port. I trust the Cirrus air
> >> speed
because
> >> of
> >> its being certified. It's great to get a fast moving certified
aircraft
> >> to
> >> do some side-by-side flights with the Velocity, just to make sure
> >> both air speed "meters" are indicating the same during formation
> >> flight.
> >> 200 knots indicated in the Denver area is outstanding. The true
> >> air speed must be "right on up there". I have flown the company
> >> demonstrator
> >> (310hp)
> >> at Front Range and at Colorado Springs - giving demo rides with
4-people
> >> on
> >> board and about 40-gallons of fuel - and the aircraft performed
> >> quite well.
> >> I've talked to several Cirrus 22 owners who have taken a demo ride
> >> in
the
>
> >> XL
> >> with the Continental IO-550. All of them seemed impressed - and
> >> most admitted the Velocity had a small but noticable performance
advantage.
> >> Most
> >> were looking for a way to reduce the cost of aircraft ownership.
Several
>
> >> of
> >> the Cirrus owners were upset with the cost of aircraft insurance.
> >> Sunny Eymann recently sold his Velocity XL in favor of a Cirrus 22
> >> because he liked the feel of the Cirrus in a cross-wind landing -
> >> something
that
> >> is
> >> an everyday event in Key West. Still, he likes the Velocity - he
> >> just felt the Cirrus was the right aircraft for him.
> >> Random thoughts.
> >> Scott B.
> >>
> >>
> >> ----- Original Message -----
> >> From: "Tom Martino" <tmartino at troubleshooter.com>
> >> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> >> Sent: Monday, April 10, 2006 10:51 AM
> >> Subject: RE: REFLECTOR: Take Off Performance
> >>
> >>
> >> 1600 Pounds. Actually a little less now that I am removing the back
> >> seats. If I push it I can darn near indicate 200 knots ... but normal
> >> cruise would be less.
> >>
> >> -----Original Message-----
> >> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> >> Behalf Of Al Gietzen
> >> Sent: Monday, April 10, 2006 8:23 AM
> >> To: 'Velocity Aircraft Owners and Builders list'
> >> Subject: RE: REFLECTOR: Take Off Performance
> >>
> >> Tom;
> >>
> >> I'm curious what the empty weight is on your Velocity.
> >>
> >> Thanks,
> >>
> >> Al
> >>
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> >>
> >>
> >>
> >>
> >
> > --
> >
> > -
> > The true barriers of our liberty in this country are our state
> > governments...
> >
> > Thomas Jefferson
> > _______________________________________________
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> >
>
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>
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