초록

An aircraft windshield having an outer glass ply spaced from an inner polycarbonate laminate. The space between the two structure is pressurized with gas at a level approximately one pound per square inch less than the aircraft cabin pressure.

대표청구항 ▼

A transparent vision unit for an enclosed pressurized vehicle, the vehicle having means therein to monitor pressure within said vehicle, means for containing gas under pressure, and means acting on said gas containing means and responsive to said monitoring means to control the flow of gas from said

A transparent vision unit for an enclosed pressurized vehicle, the vehicle having means therein to monitor pressure within said vehicle, means for containing gas under pressure, and means acting on said gas containing means and responsive to said monitoring means to control the flow of gas from said gas containing means, the unit comprising: an outer ply having a predetermined deflection value; an inner ply having a predetermined deflection value less than that of said outer ply; means for spacing said plies to provide a sealed space therebetween; means connecting said sealed space and said pressurized gas containing means; and means to move gas under pressure into and out from said sealed space to maintain the gas pressure within said sealed space at about said monitored vehicle pressure in response to said control means.