Future flyingThe future of commercial airline business?
Facts as of today• Commercial airliner engines using kerosene are seen very energy unefficient, noisy and polluting• Airline industry has grown to multibillion everyday business serving millions of passangers and carry millions of tons of cargo each day• Climate is warming up due to human activity – mainly use of fossil fuels (oil and coal)• Climate change has started to cause extreme weather conditions affecting to air traffic service
Future facts?• Energy prices rise due to the shortage of fossil fuels and ever increasing demand• In the medium long term it is clear that the economy will turn into electric/hydrogen based• In the long term hydrogen will be the fuel for commercial airliners• Commuter flying becomes uneconomical as the electric high speed trains serve the travelling needs between cities up to about 2000km apart (about 4 hours travelling time)• Modified airliners using hydrogen will operate between cities 2000-5000km apart using existing airfields (about 4 hours travelling time)• High speed travelling between continents (5000- 22000km) will be done using hydrogen fueled scramjet planes.
Hydrogen powered Ram/Scramjet A ramjet engine. A scramjet engine.A ramjet has no moving parts and achieves Scramjet is an acronym for Supersoniccompression of intake air by the forward Combustion Ramjet. The scramjetspeed of the air vehicle. Air entering the differs from the ramjet in thatintake of a supersonic aircraft is slowed by combustion takes place at supersonicaerodynamic diffusion created by the inlet air velocities through the engine. It isand diffuser to velocities comparable to mechanically simple, but vastly morethose in a turbojet augmentor. The complex aerodynamically than a jetexpansion of hot gases after fuel injection engine. Hydrogen is normally the fueland combustion accelerates the exhaust used.air to a velocity higher than that at theinlet and creates positive push.
Scramjet-powered planes (and missiles) may be closer than you thinkThe race to build a working and dependable scramjet is happening all the world over — the United States, China, Australia and who knows who else all want one. DARPAs HTV-3X, also known as Blackswift, is an unmanned scramjet-powered plane that may take to the skies as soon as 2012, hitting speeds of up to Mach 6. Why the rush? Planes flying with scramjet engines would be able to fly from New York to Tokyo in two hours. Certainly more enticing to the nations of the world, a missile using a scramjet would be able to hit any target anywhere on the globe in a handful of minutes.http://www.msnbc.msn.com/id/37377401/ns/technology_and_science-space/
Lift the runway to 10km height!In order to reduce the take-off energy the scramjet plane fueling, maintenance and loading could be done in a constant airflow altitude.The platform would be mostly remotely robotically operated on top of series of hydrogen balloons.The platform would carry windmills to produce electricity for the platform operations and hydrogen generation on the ground.The platform would be anchored to the ground with nanocarbon cables, which also would carry electricity to the ground.The hydrogen would rise by itself through tubes to the platform to be used for suspension balloon control and liquidated fuel for scramjet planes.Helium blimbs (for safety reasons) would lift cargo, aircrews and passangers to the platform and back to the terminal on the ground.
Plane structureThe plane would consist of four relatively independent parts:• The frame would consist of a hull, wings, engines and aviation equipment.• The cockpit would consist of life support to pilots, navigational and communication equipment.• Cargo/passanger module would carry life support, entertainment, nourishment etc systems for passangers and aircrew as well as emergency beacon and module parachutes. This module will be fully airtight, unflammable and capable of floating even when fully loaded.• Liquid hydrogen fuel tankAll these can be separated from each other in case of emergengy in the air (explosive bolts)The cockpit and passanger module are like monocock in F1 car designed to shield the people inside in an accident.
Loading and unloading the planeThe frame and the fuel tank would land on the ground only for regular maintenance , if it can not become maintained on the platform.The cockpit and cargo/passanger module would be checked, maintained, loaded and unloaded on the ground terminal below the platform.Helium blimbs (for safety reasons) would lift cockpit cargo and and cargo/passanger module to the platform and back to the terminal on the ground.On the platform the robots would attach the cockpit and and cargo/passanger module to the frame, then the filled hydrogen fuel tank, and check that the plane is operational before liftoff.Lastly the robots would attach the liguid helium booster rockets to the plane, that would accelerate the plane to the needed supersonic speed for the scramjet to start. These rockets would be dropped off when used.On arrival the plane’s high electric charge is used to decelerate on the platform and conducted to neutrality before any unloading operation.The people will stay within the module until the blimbs have taken the module to the ground for unloading.Every passanger brings in personal luggage into the passanger module and takes the luggage with them, too. During the flight there’s no access to luggage lockers.
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