| 11. | The long thin air intake to the cockpit pressurisation system was fitted under the exhaust stacks on the starboard cowling.
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| 12. | These two prototypes were not to be fitted with cabin pressurisation, although this was planned for a third prototype.
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| 13. | The failure was a result of metal fatigue caused by the repeated pressurisation and de-pressurisation of the aircraft cabin.
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| 14. | The failure was a result of metal fatigue caused by the repeated pressurisation and de-pressurisation of the aircraft cabin.
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| 15. | The fuel was used at 4 gallons per second; refuelling took at least 90 minutes and pressurisation around 15 minutes.
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| 16. | The decision for pressurisation resulted in the double-bubble and elliptical fuselage designs being abandoned . | group = N }}
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| 17. | Balloon tanks are the most extreme of these, they are held rigid only by internal pressurisation, but are extremely lightweight.
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| 18. | Rather than the complex centrifugal turbopumps used for most Walter engines, a simple gas pressurisation system was used to feed the propellants.
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| 19. | In order to carry out this check without requiring the aircraft's engines, the pressurisation system was set to " manual ".
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| 20. | A subsequent attempt on 24 June was also scrubbed, due to a problem with the pressurisation of the rocket's fuel tanks.
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