GVFlyer
Well-known member
- Joined
- Feb 22, 2002
- Posts
- 1,461
10 atmospheres? 147 psi?
Yes.
The GV pressure vessel was required to be tested at only 17.5 psid, but the company took it to nearly 9 times that with no failure. No Gulfstream has ever had a blow-out as a result of a passenger window failure.
[FONT="]Sec. 25.365 - Pressurized compartment loads.[/FONT][FONT="]
For airplanes with one or more pressurized compartments the following apply:
(a) The airplane structure must be strong enough to withstand the flight loads combined with pressure differential loads from zero up to the maximum relief valve setting.
(b) The external pressure distribution in flight, and stress concentrations and fatigue effects must be accounted for.
(c) If landings may be made with the compartment pressurized, landing loads must be combined with pressure differential loads from zero up to the maximum allowed during landing.
(d) The airplane structure must be designed to be able to withstand the pressure differential loads corresponding to the maximum relief valve setting multiplied by a factor of 1.33 for airplanes to be approved for operation to 45,000 feet or by a factor of 1.67 for airplanes to be approved for operation above 45,000 feet, omitting other loads.
[/FONT]I continually hear people referring to the "Grandfathering" of Gulfstream's trademark large oval windows, but anyone who checks the Type Certificate will find see the only window "Equivalent Safety" finding is concerning the Horizontal Axis (as opposed to vertical axis) Emergency Exit windows.
GV