The July 1998 issue of RC Soaring Digest described a
pattern of chordwise stripes of varying widths (6" to 1/2")
which can be used to estimate altitude.
We'll make the article available as a downloadable PDF on
the RCSD web site, hopefully tomorrow, Thursday. RCSE
subscribers and rcsoaringdi
. Does anyone have a
> reference, guide or link to information how one might go about utilizing
> these stripes as an aid? Specifically I am looking for suggested widths
> and
> placement of the stripes.
On another related note, most hunting scopes (for rifles) have graduated
lines on the cross
On a somewhat related note, I know some individuals have used a series of
variying width white stripes on the lower surface of the wing as a means of
estimating altitude. Obviously this method does not work for very high
altitudes when the aircraft is at the very limits of one's vision.
For us
Using a Timex alti watch in my Windsong it recorded 3700' AGL as the highest
attained.
Mark
Soaring Is Life!!
RCSE-List facilities provided by Model Airplane News. Send "subscribe" and
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> Regis wrote:
> A few months ago I lost site of a 3M plane in blue sky. There were about
five of us watching when it just `blinked out`. Of course I tried to
spin down but it never reappeared. A few weeks latter, another flier
recounted a similar experience on this list. That got me thinking
When I got my specs redone, I got into this discussion with my eye doc
(that happened to be an ex-flight surgeon / perception researcher at
Wright Patt) about flying RC sailplanes, and how I don't see that great
at distance.
He brought up an example about experiments with the red flag exercises
in
Take a look at the Zlog. http://www.hexpertsystems.com/zlog/index.html It
is an altitude data logger for $70.
Bill Groft
-Original Message-
From: Lighthorse [mailto:[EMAIL PROTECTED]
Sent: Sunday, August 27, 2006 10:44 AM
To: CapnCrunchie; Soaring @ airage.com
Subject: Re: [RCSE] how
On Fri, Aug 25, 2006 at 07:42:09PM -0400, [EMAIL PROTECTED] wrote:
|Best I did was 'measuring' the wing on an OLY II to be 1'4" in span
|when flying over the middle of the old Hourglass Field (Home of the
|TPG) in San Diego, CA back in the mid-70's ...
|
|So, if someone can 'mass
The highest that I've verified was around 1850 m if I remember correctly, a
couple of years ago with a Picolario. I used to put my Casio altimeter watch
in my XC, and it had a max altitude, along with max rate of climb and summation
of altitude gained.The highest I recorded with the watch w
ack heat! (squirt guns;
Ron, Arthur & Don P-)
--
Rudy Siegel, AMA 131126 CD
Civis Aerius Sum
Subject: RE: [RCSE] how high really
Message-ID: <[EMAIL PROTECTED]>
I got dropped off at 2,000 feet with a scale ship, all white, on a dark blue
sky day... I had trouble seeing
ember of Joe's "Acme Sailplane Racing Team")
-Original Message-
From: Daryl Perkins [mailto:[EMAIL PROTECTED]
Sent: Saturday, August 26, 2006 10:29 PM
To: Soaring@airage.com
Subject: Re: [RCSE] how high really
You guys don't have to believe me... I had a tough
time
I got dropped off at 2,000 feet with a scale ship, all white, on a dark blue
sky day... I had trouble seeing it immediately. Took about 2 minutes to
(and it hurts to type this) bleed off altitude to get it where I was seeing
it again.
I've since gotten 'scrip sunglasses in a reddish brown to help
riginal Message -
From: "Daryl Perkins" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; "Randall Brust" <[EMAIL PROTECTED]>;
Sent: Saturday, August 26, 2006 6:36 PM
Subject: Re: [RCSE] how high really
When I talk about being at 8500 ft... the stabs had
long since
If money is no object and you want to keep track of your max altitudes without the need of a laptop, one can go to Paragear and get some very rugged equipment. Check eBay also for the same things. These units are tough and take a LOT of abuse - mine is constantly getting dropped and knocked around
This would probably be cool to use
Suunto e203
http://www.suuntowatches.com/Suunto-Escape.pro
--
Ken
York County Soaring
"Lighthorse" Team YCS
Silence is Golden
On 8/27/06, CapnCrunchie <[EMAIL PROTECTED]> wrote:
A good source for the Suunto altimeter watch is http://www.rei.com/outlet .
Kee
A good source for the Suunto altimeter watch is http://www.rei.com/outlet . Keep your eye out at this site because they often go on sale at the end of the seasons (summer/winter). I picked up mine for about $120 'n change... ;^) Blue skies, Doug
Do you Yahoo!? Everyone is raving ab
You guys don't have to believe me... I had a tough
time believing it myself. But one of the arts of
cross country flying is keeping the model in the
correct location in relation to the vehicle -
virtually directly overhead. The reason for this is to
maintain visual. I've seen the guys in Muncie fl
I asked permission from the CD during our last contest for orbital
re-entry...;-)
At 10:47 PM 8/26/2006, [EMAIL PROTECTED] wrote:
As far as "how high can you get?" You can get a LOT higher than anybody
would believe. It's a Zen Thing that no instrumentation will ever capture.
If you
can
EMAIL PROTECTED]>,
soaring@airage.com
Subject: Re: [RCSE] how high really
Message-ID: <[EMAIL PROTECTED]>
When I talk about being at 8500 ft... the stabs had
long since disappeared, the wings were literally
toothpicks, and were disappearing as well - the fuse
was non-existent. That
:41 AM
To: soaring@airage.com
Subject: Re: [RCSE] how high really
When using these altitude watches be sure to read the included instructions
very closely. Many of the ~$100 watches take pressure readings periodically
only once every 2 mins. (or greater) and are made primarily for hikers/skie
Hi Bill:At 8000 ft a 4 meter plane's image could fit in the area of a
1/64 diameter circle (at arms length). I am not sure a hawk could see
that. But hey, that's just geometry and optics!!!best to you and
our poor eyesight!regards,JimOn Sat, 26 Aug 2006
17:30:46 -0700 "Bill Swingle" wrote:Daryl sa
Daryl says 8500'. Several guys have said 4500-5000'. OK, fine. Might as well
be 100K to me.
Well guys we're getting older and I'm seeing the decline in eye sight
myself.
How about you folks?
Personally, I can't stand flying when I'm uncomfortable. Too stressful.
Bill Swingle
Janesville, CA
When I talk about being at 8500 ft... the stabs had
long since disappeared, the wings were literally
toothpicks, and were disappearing as well - the fuse
was non-existent. That's how Joe consistently beat the
pants off all the CC guys for all those years. The
plane was always in the optimum positio
I have been following this thread with some interest and would to contribute my
two undervalued cents.
First, SIZE does count.
Second, a number of years ago, Don Patterson and I were flying our Jerry
Mirlk's designed AstroJeff's on a perfect day for high altitude flying. High
clouds and some
JAMES EALY wrote:
The biggest problem with the cheapies is that they are not temperature
compensated, or VERY poorly so.
There are 2 types of temperature dependance with respect to electronic
altimeters.
The first is how temperature change affects the pressure sensor's ability to
convert p
Hello all:A couple of year ago we went through this debate and I (was
taken to task) learned a lot about the new $200 alitimeters. However, we are rarely fly overhead, but at some angle, which means we
are much farther away than "up"However, a soarer came on,
who had done his math (geometery)
When using these altitude watches be sure to read the included instructions very closely. Many of the ~$100 watches take pressure readings periodically only once every 2 mins. (or greater) and are made primarily for hikers/skiers. Suuto makes watches that can be set by user to take readings in inte
Many years ago Joe and I had his cross country
plane up to about 8500 ft. AGL. I don't recall the
exact number (it was 8500 and change), but he had one
of the first Casio altimeter watches, and we put it in
his sailplane. We could track the total altitude climb
and descent through the course of
In a message dated 8/25/2006 8:55:17 P.M. Eastern Standard Time,
[EMAIL PROTECTED] writes:
But
if anyone out there can give us some research based information on far a
human can discern an object like a 3m sailplane I'd sure like to hear
it.
That would be good! Also, it would be per
iday, August 25, 2006 3:25 PM
To: soaring@airage.com
Subject: [RCSE] How high?
Some time ago I put an Avocet wrist altimeter into my 3.2 meter plane and
thermalled it up to where I could barely see it. The altimeter max. alt.
read 2,400 ft.
Recently I read a review of a small on board max. alt
From: Robert Samuels <[EMAIL PROTECTED]>
if anyone out there can give us some research based information on far a
human can discern an object like a 3m sailplane I'd sure like to hear it.
==
Well, it depends on lighting and contrast. For resolving front-lit objects li
This will be tough to do as Superman has long passed away Dan Robert Samuels <[EMAIL PROTECTED]> wrote: I'm now a believer. I believe that people believe what they are telling us. But these distances certainly far exceed my weak vision.I'm not an expert at anything much less how far one can s
I'm now a believer. I believe that people believe what they are telling us.
But these distances certainly far exceed my weak vision.
I'm not an expert at anything much less how far one can see an object. But
if anyone out there can give us some research based information on far a
human can
;Mark Howard" <[EMAIL PROTECTED]>
To: "Robert Samuels" <[EMAIL PROTECTED]>;
Sent: Friday, August 25, 2006 5:46 PM
Subject: RE: [RCSE] How high?
7,719 feet (This was a 4.5 Meter XC plane)
7/31/04
http://www.msh-co.com/record/index.html
Although the plane was equippe
Believe.
Mark . Maui
-Original Message-
From: Robert Samuels [mailto:[EMAIL PROTECTED]
Sent: Friday, August 25, 2006 11:25 AM
To: soaring@airage.com
Subject: [RCSE] How high?
Some time ago I put an Avocet wrist altimeter into my 3.2 meter plane
and
thermalled
Best I did was 'measuring' the wing on an OLY II to be
1'4" in span when flying over the middle of the old Hourglass Field (Home of the
TPG) in San Diego, CA back in the mid-70's ...
So, if someone can 'massage' the numbers, how would 1/4"
relate to an actual wingspan of 8' and then correla
Hi Robert,The full scale pilot was reading his altimeter which was
reading MSL (Mean Sea Level) So whatever the altitude he was reading minus
your field elevation was the altitude of the sailplane.Last year at
the SW Classic I did a couple of fly-overs in my RV7. The lowest was about
500' th
In a message dated 8/25/06 2:25:36 PM Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Who,
among you, have measured how high you can see (fly) your 3 meter? How
high were you able to go and still control the
plane?Robert,
A few weeks ago at the Isle of Wight in Virginia
the SBXC t
M
To: soaring@airage.com
Subject: [RCSE] How high?
Some time ago I put an Avocet wrist altimeter into my 3.2 meter plane and
thermalled it up to where I could barely see it. The altimeter max. alt.
read 2,400 ft.
Recently I read a review of a small on board max. altitude recording thingee
and
I've thermaled a Boomerang combat wing to cloud base, with witnesses. A
local weather service office confirmed that cloud base was over 2000' AGL on
that day. Personally, I am only going to bank on it being 1000'.
I can say that my vision varies. On this day it was pretty good. But, a 4
foot s
ota
-Original Message-
From: Robert Samuels [mailto:[EMAIL PROTECTED]
Sent: Friday, August 25, 2006 4:25 PM
To: soaring@airage.com
Subject: [RCSE] How high?
Some time ago I put an Avocet wrist altimeter into my 3.2 meter plane and
thermalled it up to where I could barely see it. The altim
Best I have been able to see with the help of three witnesses was 3,400
feet here in Louisville, the sky had a huge thunder cloud that I went up toward
and that helped me see my Pike Superior, Picolario reported 3,400'. I
might have been 'able' to see it higher but those standing with me, sa
Some time ago I put an Avocet wrist altimeter into my 3.2 meter plane and
thermalled it up to where I could barely see it. The altimeter max. alt.
read 2,400 ft.
Recently I read a review of a small on board max. altitude recording thingee
and the reviewer said he thermalled his 3 meter up t
email: [EMAIL PROTECTED]
-Original Message-
From: JIM EALY [mailto:[EMAIL PROTECTED]
Sent: Monday, October 06, 2003 8:58 AM
Cc: [EMAIL PROTECTED]
Subject: Re: [RCSE] How High?
Hello guys:
During the early 80's I was involved with AMA altitude attempts. My son
did set
a AMA 2-M record (
In a message dated 10/6/2003 8:58:57 AM Eastern Standard Time, [EMAIL PROTECTED] writes:
As far as I know these toy baragraphs do not compensate for temp- which will introduce considerable more error ON THE high side!
Most state-of-the-art solid state pressure transducers are temperature compens
Hello guys:
During the early 80's I was involved with AMA altitude attempts. My son did set
a AMA 2-M record (about 1800 ft) which held up for about 10 years - and then
was only broken by a very small margin. We used triangulation with high
quality serveying instuments. ***The only way that I wi
In a message dated 10/3/2003 2:07:51 PM Eastern Standard Time, [EMAIL PROTECTED] writes:
I have heard verified stories of scale ships being flown higher andI can believe that, but I believe a 2m. would disappear at about 1500 to 2000ft.unless the light conditions were perfect..
I've had my O
> Well if you can see, and controll, and tell what a 2-meter ship is doing at
> 4100 feet!
> Then you must be Superman!
I have to agree with Charlie, I have flown one of my 8ft. deltas to around
2500ft. I verified this by measuring the distance on the ground and
using the altitude gauge on my mari
Greetings!
Well if you can see, and controll, and tell what a 2-meter ship is doing at
4100 feet!
Then you must be Superman!
Cheers
Charlie
RCSE-List facilities provided by Model Airplane News. Send "subscribe" and
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uns
You guys are all wondering about high altitudes. Check this out. None
soaring, but neat technology:
http://news.bbc.co.uk/2/hi/science/nature/3016082.stm
Cheers,
Bill
--
In theory, there is no difference between theory and practice, but in practice
there is.
Bill Johns
Pullman, WA
USA
RCSE-
CARL WALTHER wrote:
> Hi All,
>
> I was just wondering, how high can I fly my glider before I lose radio
> control??? Some say about 1 mile?
>
Out of sight.
>
> How does a 100ft. wingspan glider look from a mile up in the sky? Or how
> can I estimate the altitude?
If you really meant 100"
Depends on your visual acuity, wingspan, orientation and sky conditions. "YMMV".
Use trig for altitude calculations. a=b(tan alpha) .
--Bill
On Mon, 27 Mar 2000 20:59:56 PST CARL WALTHER <[EMAIL PROTECTED]> wrote:
Hi All,
I was just wondering, how high can I fly my glider before I lose rad
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