Pressure element of constant logarithmic stiffness for temperature compensated altimeter (1930)
NASA Technical Reports Server (NTRS) · leaf 4
s of the spring of a "logarithmic pressure element" and the position on the spring. The latter may be best located by giving the distance on the spring wire starting from the bottom of the spring. The following assumptions are fundamental: 1. The unmodified pressure element gives a straight line… … FracHi 2.-Typtcal curve for logarithmic element Fl0rKI secHon of P"*80™ tt«fof Pi, F«-»<rP DESIGN OF SPRING FOE LOGARITHMIC PRESSURE ELEMENT Definitions P = the differential air pressure in pounds per square inch acting on the pressure element. P« refers to the value at sea level atmospheric…
NASA Technical Reports Server (NTRS)
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