CN101871441A

CN101871441A - Electric jet engine

Info

Publication number: CN101871441A
Application number: CN201010172352A
Authority: CN
Inventors: 袁锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-22
Filing date: 2010-04-21
Publication date: 2010-10-27

Abstract

Electric jet engine is a kind of novel aeroengine of not burning fuel oil; Electric jet engine adopts powered battery, and the acting of motor drives gas compressor converts electric energy to the pressure energy and the kinetic energy of air, with the pressure of air can and kinetic energy be the aircraft driving source, the device of promotion aircraft flight.Electric jet engine basic structure is made up of crux parts such as generator, battery pack, motor, transmission shaft, gearbox, accessory drive gear, inner teeth roller box, fan, low pressure compressor, high-pressure compressor, jet pipes.Keyword: battery pack, motor, transmission shaft, gearbox, accessory drive gear, inner teeth roller box, fan, low pressure compressor, high-pressure compressor, jet pipe.

Description

Electric jet engine

Affiliated field

The present invention is a kind of novel aeroengine.

Technical background

Modern aeroengine all adopts aviation diesel oil to act as a fuel, rely on a large amount of heat energy and kinetic energy that firing chamber internal combustion gas produces, air expands step by step, the heat energy of combustion chamber high temperature gas and a kinetic energy part are converted into the kinetic energy of the motion of turbine rotation, and turbine drives compressor impeller and rotates to realize the automatic operating of system.Another part is then discharged by jet pipe, and the hot air of discharge still has a large amount of heat energy, and this part energy has just wasted.The turbine inlet temperature (TIT) of the modern aero-turbine of high velocity jet is up to 1800K even 2000K (about 1727 ℃) and the gas temperature that ejects also will this shows that the heat major part that incendiary oil discharges has been wasted up to more than 1000 ℃.As seen the business efficiency of fuel oil jet engine is very poor.

The cost of aviation fuel is very high, and in order to save not fuel consumption of cost, the present invention uses the running of motor drives gas compressor instead.Such benefit is the loss of removing mechanical friction, can be converted into kinetic energy with cutting off most electric energy, can not cause huge waste, and has removed parts such as firing chamber and turbine system is simplified, and has improved the reliability and stability of system.Air velocity was very high when aircraft aloft flew on the other hand, can utilize wind-driven generator to carry out electric power compensation and make aircraft obtain longer flying power.

Summary of the invention

The present invention is a kind of jet engine that does not need fuel oil, adopts the acting of motor drives gas compressor, converts electric energy to the pressure energy and the kinetic energy of air, with the pressure of air can and kinetic energy be the aircraft driving source, the device of promotion aircraft flight.

1, basic structure

The basic structure of this h type engine h is made up of crux parts such as generator, battery pack, motor, transmission shaft, gearbox, accessory drive gear, inner teeth roller box, fan, low pressure compressor, high-pressure compressor, jet pipes.

2, working principle

Motor is by battery-powered, motor converts electrical energy into mechanical energy, by transmission shaft mechanical energy is delivered to compressor blade is rotated, suck and pressurized air, air flows through gas compressor to quicken through compressor blade, speed up, temperature raises, pressure increases, gas compressor just is converted to mechanical energy the pressure energy and the kinetic energy of air.Pressurized gas are sprayed by jet pipe, and pressure can also change kinetic energy into, form very strong air reaction force, just can promote the aircraft setting in motion, fly to blue sky.Generally, it is that gas compressor is operated in the scope of design that motor enters steady-state operation, and flying speed depends mainly on the air mass flow of puff prot.The thrust that the big more aircraft of puff prot air mass flow obtains is just big more, and flying speed just improves.The air mass flow of puff prot depends on the air mass flow of compressor efficiency and suction port.Air mass flow is directly proportional with air velocity (air mass flow=flow velocity * area), and aircraft flight speed is high more, and big more with respect to the suction port air velocity of aircraft, the suction port air mass flow is big more.When one timing of suction port air mass flow, the gas compressor rotating speed is high more, and pressure ratio is big more, and the pressure of acquisition can be also just big more, and when maximum (top) speed was arrived in gas compressor work, aircraft also can accelerate to greatest extent very soon.And we know that the air mass flow one fast kinetic energy rejection of gas flow rate that regularly temperature is very high is big, so the turbofan jet engine adopts inside and outside two ducts to reduce the exhaust flow velocity.High-temperature gas is because flow velocity is too fast even make the reaction force field of force away from aircraft, this just why airplane carrier board a plane will be in the reason of a fast plate of retaining of the back of aircraft pull-up when taking off.Therefore we want to improve thrust, are increasing the pressure energy, and when improving air mass flow, no longer heating or combustion air can reduce kinetic energy rejection like this to improve temperature.When the aerial resistance of aircraft and motor power reached relative equilibrium, aircraft also just reached maximum flying speed.The maximum flying speed of propeller driven airplane can reach 950 kilometers/hour, because the aerial resistance ratios propeller driven airplane of jet airplane is little, so adopt the aircraft flight speed of jet engine to be expected to realize supersonic flight (velocity of sound is 1224 kilometers/hour under the normal temperature) above propeller driven airplane.

Electric jet engine also can be a kind of cool air jet engine.Because density and quality with the volume cool air under the uniform temp are bigger than hot air; High thrust is big more more for the quality of ejection air in unit time, so the thrust that identical flow velocity cool air produces is big, and the promotion efficient height of cool air jet engine.The speed that gas cylinder flies away very higher position is this reason.Low temperature realizes that down high supercharging pressure level also is this reason.In electric jet engine, suitably increase cooling unit and can improve pressure ratio effectively, so desirable electric jet engine is the jet engine of band gas holder.

3, control flying speed

Want to control flying speed in sum, we can realize by controlling aircraft suction port air mass flow and compressor efficiency.At suction port closure is set, with the flying speed of gearbox control gas compressor rotating speed with regard to the may command aircraft.Closure covers a part of suction port, reduces the air inlet area and just can reduce air mass flow, and aircraft slows down; Change the different output ratio of gearbox, the rotating speed difference of transmission shaft output, the rotating speed of gas compressor is also different, realizes that different pressure ratios is also with change of flight speed.

Specific implementation

(1) multistage compressor electric jet engine

For obtaining bigger pressure ratio, the electric jet engine of multistage compressor may be modal form.As shown in Figure 1, motor is connected with circuit with battery pack in the electric jet engine system, and battery pack is as the power supply of motor, and motor changes electric energy into mechanical energy and passes to the compressor work mechanical axis by transmission shaft.Line shaft passes to gas compressor with kinetic energy again.To obtain different rotating ratios by inner teeth roller box gas compressor.So just realized groundwork flow process with motor drives gas compressor workmanship.

(2) electric jet engine of band gas holder

The electric jet engine of band gas holder also can be described as the supercharging jet engine, as shown in Figure 2.When it is started working, earlier air is pressed in the high pressure tank continuously, and then opens high pressure tank plug door.High-pressure air in the high pressure tank has huge pressure potential, and Sai Men opens the back pressure potential and changes kinetic energy into, and the gas that ejects forms the air reaction force, promotes aircraft takeoff.Suction port and puff prot air mass flow reach flow equilibrium then, and system enters the steady operation mode.

Claims

1. the present invention is a kind of aviation jet engine that does not need fuel oil.

2. want art 1 described electric jet to start to adopt electric energy according to right, do manual work, can change kinetic energy into by pressure and promote the aircraft operation high-pressure air with the motor drives gas compressor as power source.

3. so want art 1 described electric jet to start because it has not cancelled fuel chamber in its system of needs fuel oil according to right, simplified the system architecture of original jet engine complexity.

According to right want art 1 described another characteristics of electronic jet engine be it with electric energy as power source, do manual work with the motor drives gas compressor, so it does not need turbine yet, system architecture is more succinct.

According to right want art 1 described electric jet engine neither combustion air also need not give air heating, can adopt cool air to finish impetus to aircraft as working medium.

6. the present invention has also mentioned the new solution of a kind of aeropropulsion system both to have adopted wind-driven generator has been charge in batteries, with this power supply problem that satisfies electric jet engine, guarantees that aircraft has stronger flying power.