Altitude protection device

摘要

The altitude protection device according to the invention for an acceleration protection suit (1) operating according to the hydrostatic principle and having a plurality of liquid-filled veins (4) consists of a bladder (3) inserted in a pocket (2) and consisting of an elastic plastic. A knitted spacer fabric, preferably consisting of monofilament material, is enclosed in the pocket (2). This fabric is non-compressible under the loads to be provided and thus defines a minimum volume in the interior of the bladder (3). The bladder (3) is closed off or opened relative to the surrounding air in the aircraft cabin by means of a valve (5). The valve (5) is set up in such a way that it is opened if 1 ${\frac{dp}{dt}\le \frac{dp}{dt}\&RightBracketingBar;}_{\max }$ $\mathrm{and}\mathrm{closes}\mathrm{if}$ $\frac{dp}{dt}>\frac{dp}{dt}{|}_{\max },$ where 2 $\frac{dp}{dt}$ represents the rate of change in the cabin pressure 3 $\left(\mathrm{in}\frac{N}{m^2}\text{/}\sec \right)$ and 4 ${\frac{dp}{dt}\&RightBracketingBar;}_{\max }$