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What is the cabin pressure of Boeing 787?
6,000 feet
The 787’s internal cabin pressure is the equivalent of 6,000 feet (1,800 m) altitude resulting in a higher pressure than for the 8,000 feet (2,400 m) altitude of older conventional aircraft; according to a joint study performed by Boeing and Oklahoma State University, such a level significantly improves comfort levels.
Is the 787 a Dreamliner?
The Boeing 787 Dreamliner is an all-new, super-efficient family of commercial airplanes that brings big-jet ranges and speed to the middle of the market.
Why does the Boeing 787 use cabin air?
Boeing is moving to a bleedless system with the 787 Dreamliner and GEnx engines. In the past engine bleed air has been used extensively for ECS (Environment Control System) e.g. cabin pressurization and air conditioning, as well as anti and de-icing, ozone removal and many other uses. Nevertheless Boeing firmly believes…
Why does the 787 have so much drag?
As air passes over the wings and tail of an aircraft, at some point, the smooth flow of air breaks away from the surface and becomes turbulent. This turbulent air creates drag, slowing the aircraft down, requiring more power from the engines to drive it forwards. The more power needed from the engines, the more fuel is needed.
How are the air conditioners on a Dreamliner?
From here, the air is fed to four electrically powered Cabin Air Compressors (CACs). Here, it is pressurized and sent to two air conditioning packs — L Pack and R Pack in the diagram below. The packs are responsible for conditioning the air to a certain temperature and humidity and then sending it toward the cabin.
What are the features of the 787 Dreamliner?
The 787-9 is the first aircraft to be fitted with hybrid laminar flow control (HLFC), which is a feature of the tail-fin and the horizontal stabilizer beneath it. By using a special suction system, the air flowing over these surfaces remains in a smooth parallel flow for much longer, greatly reducing the drag created.