Piston stop for free piston shock tube/tunnel

Details Piston stop for free piston shock tube/tunnel Piston stop for free piston shock tube/tunnel

1992-01-03

1993-09-21

Woodiel, Donald O.

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

73 1207, G01M 900

Patent

active

052458687

ABSTRACT:
A free piston shock tube/tunnel having a mechanism for stopping the piston or controlling the movement of the piston near the diaphragm end of the compression tube. The mechanism includes a generally annular protrusion positioned at the diaphragm end of the compression tube and extending upstream from the diaphragm to engage the piston at a point where the velocity of the piston is substantially at a minimum. The annular protrusion is spaced inwardly from the compression tube and has an inner diameter greater than the diameter of the shock tube.

REFERENCES:
patent: 4696182 (1987-09-01), Meir
patent: 4898028 (1990-02-01), Brehm
patent: 5115665 (1992-05-01), Lacey, Jr.

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