Pressure element of constant logarithmic stiffness for temperature compensated altimeter (1930)
NASA Technical Reports Server (NTRS) · leaf 5
ratrix of the cylinder passing through the center line of the wire. The spacing is that when the pressure element is subject to the differential pressure Pb. ■■ the same as Xm except that it refers to the value of Xm between points on the spring Zs = Zi + 2nr and Zs. •the spacing in inches between… … Theory.—The stiffness of a pressure element is the sum of stiffnesses of the elements. (Reference 5.) S=8+s, (2) The stiffness of the sylphon or diaphragm capsule stf is usually small in comparison to that of the spring. The commonly used helical spring formulas given for «: 1 C3) in which 2r2 (4}…
NASA Technical Reports Server (NTRS)
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