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GSP history
The development of GSP started at the Delft Technical University (TUD,
Aerospace dept.) in 1986. At TUD, NASA's DYNGEN (NASA TN D-7901, 1975) program was
used for jet- and turbofan engine simulation. However, DYNGEN appeared to
have many problems with numerical stability and had a poor user interface. As a
consequence, GSP was developed, inheriting features from DYNGEN. Significant
deficiencies of DYNGEN were fixed in GSP; especially the stability, the speed
of the numerical iteration processes and the user interface were improved.
It appeared that an additional amount of improvements, adjustments and extensions to the GSP
program were necessary before useful simulation of a generic jet engine was possible.
Development continued at NLR, where GSP has been converted first to FORTRAN77
and later when desktop computers gained computational power for acceptable prices
to Borland® Delphi(TM). Delphi allows rapid adaptation due to the use of object orientation,
offering excellent means to maintain and extend the program.
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DYNGEN (1975)
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unstable
slow
poor user interface
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GSP in FORTRAN77 (1986)
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thesis of W. Bouwmans at Delft University, Aerospace faculty
improved UI, solver, stability
practically usable
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GSP for Windows (1996)
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rapid development using Borland® Delphi(TM)
Object Orientation
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GSP
