Description / Abstract:
This SAE Aerospace Recommended Practice (ARP) presents two BASIC
language computer programs to promote and standardize the
computation of installed O-ring cross-section deflection hereafter
referred to as "squeeze" and the computation of gland volume. The
two programs were written with line numbers and without use of any
system specific BASIC commands to allow usage with as many systems
as possible with a minimum of editing. The programs support entry
of customary U.S. or metric dimensions.
The squeeze program, called SQ.BAS, has the following
features:
a. allows selection of either piston or rod gland
b. allows entry of cap strip seal thickness
c. computes minimum and maximum squeeze
d. allows checking and correction of entries before
execution
e. allows viewing of output on screen before printing
f. gives advisory messages for excessive stretch or inadequate
squeeze
g. allows on-line review of essential input and output variables
prior to running program
h. computes clearance between minimum gland height and maximum
backup radial height when the backup dimension is entered
i. program output is viewable on screen or may be printed out
using either of two methods
The glad volume program called GV.BAS, has the following
features:
a. allows selection of either piston or rod gland
b. computes gland volume, O-ring volume and backup ring
volume
c. computes minimum and maximum percent occupancy
d. allows viewing of output on screen before printing
e. allows on-line review of essential input and output variables
prior to running program
f. allows entry of volume of a non-standard configuration or
special seal such as a cap strip seal
g. program output is viewable on screen or may be printed out
using either of two methods.