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EDUCATIN
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AVIAUTL1.LBR
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AIRDATA.TZT
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AIRDATA.TXT
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2000-06-30
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46 lines
The enclosed programs, AIRDATA.BAS, and DENSALT.BAS were written by
R. G. Gross, of Santa Cruz, CA. Together with his earlier program,
published variously as WINDRFT and DRFTRNGL, they have the makings
of a sophisticated flight planning program.
The latter program, given the expected wind direction and velocity,
will accurately predict the heading required to maintain a given
course, as well as the groundspeed, given the true airspeed.
The program AIRDATA.BAS, given either Calibrated Airspeed or Mach
number along with observed temperature, will accurately compute True
Airspeed. In addition to the latter, if CAS is given, the program
will compute the Mach number. Conversely, if Mach is given, it will
also compute the CAS. The program corrects for compressibility effects
in the airspeed indicating system, and will also, if so commanded,
correct for air friction errors in Outside Air Temperature indicating
systems. For the latter function, a HELP function is provided, giving
a very brief explanation of the differences in OAT indicating systems,
and steps required to modify the program for standard correction of
same.
The program DENSALT is intended to compute Density Altitude for the
purpose of Take-off performance calculation. Given Pressure altitude
and Temperature in either C. or F., the program will accurately compute
the existing Density Altitude.
The limits of both programs are approximately 45,000 feet msl, and Mach
1.000.
Potential users must be cautioned that the writer can make no guarantee
of the above accuracies, and can accept no responsibility for conse-
quences of use of the programs. Written or printed data output by a
computer has an aura of exceptional credibility, whether or not it may
be correct. In cases of limited performance, whether it regards range,
or other products of True Air Speed, or Take-off, climb, and landing
performance, it is imperative that any aircraft operator carefully
consult the FAA approved aircraft operating manual.
Numerous REM statements have been added to the programs, to assist
the user in extracting pertinent portions of the program for his own
use.
This material is intended for the use of anyone for his own non-com-
mercial purposes.
R.G.G 1-13-87