Contents
What is the cabin altitude of a 737?
approx 8,000ft
In all 737’s the pressurisation system ensures that the cabin altitude does not climb above approx 8,000ft in normal operation.
What is the cabin altitude of a 777?
That formula has changed slightly with Boeing’s announcement at the Farnborough air show that the 777X cabin will “replicate” the maximum, 6,000ft pressure altitude of the 787 cabin, a significant cabin improvement from the 8,000ft maximum pressure altitude of the 777.
What altitude does a 787 fly at?
Plane facts and figures
| Aircraft type | Speed in km/u* | Altitude in ft* |
|---|---|---|
| Boeing 747 | 920 | 35,105 |
| Boeing 737 | 850 | 35,000 |
| Boeing 777 | 905 | 35,000 |
| Boeing 787 Dreamliner | 907 | 40,026 |
How is 787 pressurized?
The 787 no-bleed systems architecture is shown schematically in figure 1. On the 787, bleed air is only used for engine cowl ice protection and pressurization of hydraulic reservoirs. Instead, the compressed air is produced by adjustable speed motor compressors at the required pressure without significant energy waste.
How high can you fly without a pressurized cabin?
12,500 feet
The higher the maximum differential pressure, the closer to sea level the system can maintain the cabin. Federal Aviation Regulations say that without pressurization, pilots begin to need oxygen when they fly above 12,500 feet for more than 30 minutes, and passengers have to use it continuously above 15,000.
How often do planes lose cabin pressure?
Airliners can descend over 8,000 feet per minutes if needed. A descent from 35,000 feet at that rate would have you down to 11,000 feet in 3 minutes or less. John Cox is a retired airline captain with US Airways and runs his own aviation safety consulting company, Safety Operating Systems.
What is the maximum cabin altitude?
The regulations2,3 stipulate that the maximum cabin altitude should not exceed 8000 feet during normal operations, and, in fact, at usual cruising altitude the cabin altitude rarely exceeds 6000 or 7000 feet in a modern jet airliner.
What’s the maximum cabin altitude of a Boeing 787?
Based on that knowledge, Boeing designed the 787 to be pressurized to a maximum cabin altitude of 6,000 feet. So if we assume a constant altitude of 43,000 (the 787’s service ceiling 1), we would get a maximum differential of: 6,000 ft Cabin Altitude = 9.06 psi 8,000 ft Cabin Altitude = 8.11 psi
How tall is the Boeing 787 Dreamliner in feet?
The 787-10 is to be 224 ft (68 m) long, seat 330 passengers in a two-class cabin configuration, and have a range of 6,430 nmi (11,910 km; 7,400 mi).
What should the cabin altitude be on a plane?
This means that, while cruising at an altitude of 37000 feet, the cabin of the aircraft would have a pressure, equivalent to the atmospheric pressure at 8000 feet of altitude. Lower the cabin altitude, greater is the comfort level of the passengers. Normally, commercial aircrafts, have a cabin altitude of around 7000 feet.
How is the weight of a Boeing 787 reduced?
Weight is being reduced by the fact that up to 50% of the aircraft is built using composite materials, including the fuselage and wings. To put this in perspective, compare the Boeing 787 with Boeing’s top-selling Aircraft, the Boeing 777. The fuselage is constructed using single piece barrels joined end to end instead of multiple panels.