John S. Denker
There is also a secure version of this page.
- See How It Flies -- A
new spin on the perceptions, procedures, and principles of flight.
That's a pilot-oriented book about how to fly
airplanes. The entire book is online: 200,000 words in 22
chapters, with 250 color illustrations.
- A more technically-oriented explanation of how wings produce lift. This emphasizes the
value of using vortices to describe the flow
patterns in the air.
- Some hints and suggestions for
passengers in light aircraft.
- Instructions for how to make my
favorite type of flyable paper airplane.
- A ruling from the office of the FAA Chief Counsel
explaining that the FAA permits
stalls, steep turns, and some ``unusual attitudes'' within
Federal Airways. This is important because (a) it would not
have been obvious from a plain reading of the regulations, and (b)
in many places in the US, including places where a great many
pilots live and train, practically all of the airspace lies
within Federal Airways.
I wish they would change the wording of the regulation to make this
clear, but until then, everybody will have to rely on this FAA ruling.
- A discussion of the accuracy of fuel gauges in light aircraft.
-- a tool for
downloading free US terminal procedure publications
including instrument approach plates. This is a perl program
that should run on almost any platform including Linux and Windows.
Some documentation is available.
- An introduction to Geospatial
Information Systems including QGIS and GRASS. That is, some hints
on how to make useful and beautiful maps on your computer.
- A critique of the article by David
Anderson and Scott Eberhardt, "How Airplanes Fly". The article
makes a number of valid points, but then makes a number of significant
errors. It replaces old misconceptions with new ones.
- XML code to implement an interval
timer (aka approach timer) [aka stopwatch] for a wide range of
simulated aircraft in connection with the FlightGear flight simulator,
fgfs. Having an interval timer is more-or-less indispensible for
performing certain types of instrument approaches.
- XML code specifying the
configuration for the Saitek X52 USB Throttle and Yoke (aka
joystick) for use with the FlightGear flight simulator
- A whole bunch of other patches and
contributions to the FlightGear flight simulator (fgfs)..
- Old flight planning spreadsheets.
(Note that for most purposes, services such as DUATS do a better job.)
- A simple model of how an Automatic
Direction Finder (ADF) works, including attitude-induced errors
(mainly bank error).