HANGAR DOORS 11-24-14:
How do you open hangar doors? Well around here at Skyhaven,
you push a button that says up, or down, or stop. But what about very large
hangar doors that are on hangars for commercial airlines? In a recent article
about special industrial computers called
PLC's (Programmable Logic Controllers), they are basically saying that
at some large airports the control panel to open the massive doors, 130
x 90 feet x 74,000 lbs, is a computer screen.
Similar to the aircraft
that go into these hangars, the door control systems are "glass panels."
Levers and button, switches and relays are being replaced by solid state
components that provide feedback information to the computer with all kinds
of data about the doors condition, location all fed with cameras, laser
and infrared sensors. The computer than controls the motors and mechanism
required to move the doors.
on 33 11-21-14:
Everybody is getting ready for winter. If you didn't change the oil on
your snow blower last spring, it's probably a good idea to do it pretty
soon or you'll end up going two years on the same oil. Speaking of oil,
it's also that time of year to plug in the engine oil heaters. Don't forget
to plug in after your flight. By the way, that green fence is a "snow fence"
and from what I understand, there is a specification on its size and dimensions
from the taxiway. I believe the idea is to deflect the wind so that the
taxiway will have minimum snow accumulation. I'll take another picture
in January to see how it's working. Click on the runway numbers below to
see some pics of the new runway.
at 34,500 m.p.h. 11-14-14:
Space travel these days seems to be happening mostly in the movie theaters.
However, for the past 10 years since its launch, an
unmanned spacecraft (is that an USV?) has been circling the inner parts
of the solar system to gain enough momentum to rendezvous with a comet
called 67P somewhere out beyond the orbit of the planet Mars. The spacecraft
is so far away, it takes 30 minutes for the radio signal (traveling
at 186,282 miles per second) to reach it. Thanks to 17th century mathematician
Isaac Newton for mathematically defining the laws of motion and gravity,
engineers and scientist are able to calculate with orbital mechanics the
trajectory of the spacecraft and use two nearby passes of earth and one
pass by Mars to use a slingshot effect to accelerate to 34,500 mph required
for the rendezvous. I wonder if manned spaceships will have a "Direct-To"
button on their navigational screens?
225 Newsletter 11-10-14:
Itís been 4 months since we last had a meeting in Sanford, Maine and our
November meeting will be hosted by Southern Maine Aviation in Sanford.
The November meeting will be held on Veterans Day (Tuesday, November 11th)
and as a tribute to our veterans, they will eat our EAA 225 barbecue
You Ready for Glass? 11-05-14:
The days of analog boiler gauges seems to be taking a back seat to what's
the "Glass Panel." I had an opportunity to fly a light sport with a full
Dynon EFIS-D1000 (Electronic Flight Monitoring System) and EMS (Engine
Monitoring System) with auto-pilot. For some pilots, having all that automation
in a light sport is a contradiction. Give me a six-pack, com-nav vor and
a transponder and you're good to go. All right, maybe a Garmin GPS for
nav instead of the VOR. Anything more than that is going to be a distraction.
Besides, if you are going for a little ride for that so called $100 hamburger,
you'll be able to see your airport of destination shortly after take-off.
But if you're interested in a $300 hamburger, now you have some time to
play around with the glass panel. Getting used to the little rectangular
computer screens with all the sliding and scrolling bars framing the screen
and spattered with various types of data in strategic locations takes a
little getting used to. Dynon has a unique feature where the multifunction
buttons are along the bottom of the screen so they can use the computer
screen to show the name of the button function relative to the different
screen pages that are active. And if you don't have enough information
to satisfy your wow factor, you have the option to split the EFIS screen
and add more data. Don't forget to look out the window every now and then
so you don't overfly your destination.
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information about aviation and various activities at Skyhaven.
welcome your comments and suggestions and hope you find the site informative
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