THE ERA OF LONG HAUL EFFICIENT JETLINER-Boeing 787 dreamliner Aircraft
BOEING 787 DREAMLINER Aircraft.
A flagship from Boeing and an entire Boeing 787 Dreamliner Aircraft is new breed of aircraft designed for ultra long haul flights. It has come right out of dreams of many airliners, an aircraft which can fly non-stop to destination where no other airlines ever dreamt to reached. It flies most unachievable destinations as far as 14000 kms but do it more efficiently and much quietly. The most fascinating part of this bird isn't its looks but the very material it’s made up of. The same material most of your cell phones and cars are made of, Plastics. Yes! plastics but not just any, Carbon fiber Reinforced Polymer. It’s the most new wonder material then the conventional aviation grade aluminum or alloys. Its lighter, stronger and tougher than any engineered material made by mankind.
Why a new aircraft with this material, when aviation manufacturer are building very competent products in very recent past? Answer to this question is a new approach of manufacturing which is the world beacon for aviation industry.
Its pushing the dimension of manufacturing in a whole new way by which aircraft can be made. Its 20% more efficient on fuel burn, makes engines more powerful, reduces nox emissions and noise reduction capabilities. Since the carbon fiber can be woven in different angles and layers to gain maximum strength to weight ratio, its engineered to fit in bit by bit to make up the complex component for Boeing 787 dreamliner aircraft. It's got a whole new bigger window to see the world from above which is 20 % larger than existing aircraft operational, which are electro chromatic dimmable and the largest in industry of size 10.7 * 18.4 inches. Thanks to the composite material which has the highest fatigue strength in a flight cycle. It has a seating capacity of 440 max for its model Boeing 787 dash 10.
Ability to handle stresses and distributing the stress concentration has made this material to overcome many asymmetric design challenges. One being the pressure cycle of the cabin, which can accommodate bigger windows, withstand higher stress loading and higher cabin pressure of 6000 feet for passenger comfort for superior environmental control. It has more humidity in ambient cabin pressure than any other aircraft of its class, which is 6 to 7% drastically reduces the jetlag and risk of altitude sickness. Conventional aircraft maintain 1 to 2 % of humidity for safety reasons because higher humidity can corrode metal alloys from inside but composite has no impact of high humidity levels. One interesting design change is that it doesn’t have a bleed air system which in turn means lesser components, efficient engines and high cabin pressure can be achieved by electro compressor atmospheric system.
In the absence of bleed air one would wonder, what about the icing problem? It has a revolutionary electronic deicing system in form of heating mats on leading edges which senses the precondition and activates before the icing occurs. It’s a complete electrically driven system, which is fairly automated on the flight performance parameter for best delivery of results and even reducing the weight requirement of bleed air heating system. It has industry first brake by wire a electrical braking system and no complex hydraulics and pneumatics on braking system.
The wing design has a wing tip known as winglet which reduces the significant fuel consumption. It's Wings are housing even more revolutionary power plant which are the single most largest thrust producing engines by general electric GENX or RR Trend 1000 on a twin engine aircraft. Its produces a whooping 76,000 Pounds per foot of thrust each. It has 7 generator at any given moment and a total max electrical power delivery is 1.5 MW enough to delivery power to a small town. It is the first airplane to actively use Lithium Polymer battery in its electrical sources for its power density and light weight. Its uses all LED lighting system which is industry new for replacing all the other heavy sources of lighting. It provides power socket at every seat for mobile and others gadget charging capacity.
The powerful engines of Boeing 787 Dreamliner Aircraft on long haul twin jets has earned itself a great ETOPS rating of 330 minutes for its operational reliability on long over sea routes. It has a saw shaped tipped exhaust cowling called Chevrons which mixes the
cold bypass air with hot core blast softly to reduces the engine noise on takeoff or landing. It’s a very handy innovation where airport implement strict Noise Abatement Procedures. The cowling of Boeing 787 Dreamliner Aircraft engine nacelle has special noise absorbing material to reduce noise below 80 decibels, which helps it to make the most quietest cabins in the world on cruising altitudes.
The cockpit of Boeing 787 Dreamliner Aircraft has more new redesigned features for crew comfort with five large displays and two Head Up Display by Rockwell and Collins company. The increased cabin pressure reduces the fatigue effect on the operating crew and jetlag. It's one of the most advanced and highly automated glass cockpit in the aviation world.
It's by far the most advanced twin jetliner of aviation to incorporate heavy use of composite and new technologies of the era. The Airbus company has recent launched it completer called AIRBUS A350 XWB aircraft with similarly features but lack the orders. Boeing 787 Dreamliner Aircraft has bagged the orders of 1403 planes and has delivered about 754 aircrafts as of November 2018.
It’s a well thought design to complete for many years to come. Its efficient engine, lighter but stronger composites and ground breaking technologies makes it the most modern and safest jewel in the skies. The operational reliability and it's efficiency will keep the Boeing 787 Dreamliner Aircraft airborne for decades, fulfilling many aspiration and dreams to come true.
-Er. ABHINAV. A. BILODI