Window element for insertion in a window aperture in an outer skin of a transport
A window element has a cover pane which is substantially flush with an outer skin of an aircraft or other transport, achieving a fluid-dynamically favorable, substantially unbulged exterior surface. As a result of the presence of an additional back-ventilated cover pane arranged in front of the actual outer pane of the window element, a fluid-dynamically favorable integration of the window element into the outer skin of an aircraft fuselage airframe is achieved. Any deformation, such as any buckling or bulging of the outer pane of the window element, as a result of a difference in pressure between the interior of the aircraft fuselage airframe and the exterior space at cruising altitudes, has no fluid-dynamically disadvantageous effect. The outer pane is covered by the cover pane which remains substantially undeformed with respect to the outer skin of the aircraft fuselage airframe, for example. Any deformation of the cover pane is largely eliminated by back-ventilation.
1. A transport, comprising:
an outer skin having an inner surface, an outer surface and a window opening;
a sealed, double-pane window element having two window panes sealed together by a seal and mounted in a window frame, the window frame having a window-frame outer face facing away from an interior of the transport toward an exterior environment, the window-frame outer face having an outer peripheral portion being mounted to the inner surface of the outer skin; and
a cover pane having a peripheral portion of an inner surface of the cover pane ventilatingly coupled to an outer surface of a support frame, the window-frame outer face having an inner peripheral portion extending from the outer peripheral portion of the window-frame outer face and extending over a portion of the support frame and the peripheral portion of the inner surface of the cover pane, the support frame having an inner surface of the support frame coupled to the inner peripheral portion of the window-frame outer face such that the window-frame outer face extends across any gap between the outer skin and cover pane, and air pressure between the window element and the cover pane ventilatingly coupled to the outer surface of the support frame equalizes with an air pressure external to the transport, achieving back ventilation of the cover pane.
2. The transport of claim 1 , wherein the cover pane is joined adhesively to at least a portion of the supporting frame.
3. The transport of claim 1 , further comprising a pressing frame attached to the supporting frame wherein the supporting frame comprises at least one connecting element attachable to the window frame.
4. The transport of claim 3 , wherein the seal is clampable between the pressing frame and the window frame such that the window frame seal receives an inner pane and an outer pane using at least one connecting element.
5. The transport of claim 3 , wherein at least one connecting element includes a stud bolt and a threaded nut, the stud bolt being selected to fit in a hole in the window frame and the threaded nut engages threads on the stud bolt for joining the supporting frame and the window frame.
6. The transport of claim 5 , wherein the pressing frame has at least one hole reinforced by a reinforcing element and the stud bolt fits through the at least one hole such that the pressing frame is joined to the supporting frame.
7. The transport of claim 5 , wherein the at least one connecting element is at least six connecting elements space substantially uniformly with respect to one another in the supporting frame.
8. The transport of claim 3 , wherein the pressing frame is of a fiber-reinforced plastic material.
9. The transport of claim 1 , wherein the window frame has a substantially rectangular cross-sectional geometry.
10. The transport of claim 9 , wherein the window frame is of a fiber-reinforced polymeric material, a metal or both a fiber-reinforced polymeric material and a metal.
11. The transport of claim 1 , wherein the supporting frame has a substantially rectangular cross-sectional geometry.
12. The transport of claim 1 , wherein the supporting frame is of a sheet metal, and the sheet metal is painted, coated or laminated.
13. The transport of claim 1 , wherein the window-frame outer face is joined by gluing or riveting to at least a portion of the inner face of the outer skin.
14. The transport of claim 1 , wherein the cover pane is attached to the supporting frame by gluing or riveting.
15. The transport of claim 1 , wherein the cover pane is of a polymeric material.
16. The transport of claim 15 , wherein the polymeric material is of a polycarbonate.