Welcome to Jetcopter !

                                                    

             Helicopters invented in 1920's , 100 years in use with no changes




It's time for new generation copter ?



* hybrid propulsion - take off by electric motors  , cruise on diesel engine.

* 2 counter rotating centrifugal 300 cm diameter turbines powered by 4 electric motors (2 on each shaft for safety)
* rear diesel motor with pusher prop for efficient horizontal flight and recharging batteries after take off


Why helicopters inefficient :


* use all the time lifting power when it need it only for short time at take off and landing 
* have no wings
* very complex controls and components
* waste 15-18% power for rear anti torque rotor
* almost not possible to add parachute
* dangerous rotor blades
* short lifespan of many components = very high costs per traveled mile


What is idea of JETCOPTER ?

 USA patent  , publication US-2019-0016453-A1 



                                                          replacing main and tail rotor by double centrifugal air turbines 
                                                                    replacing cyclic control by airflow vectoring




                             4 points air vectoring from jet to jetcopter

* most compact size VTOL in the world  
* much safer to passengers and to people nearby - have fully duct fans .
* more efficient  in horizontal flights , have wings , pusher propeller 
* more affordable compared with similar 5 seats helicopters
* feasible construction and effective production costs




                                      practically proven Harrier jump jet 4 nozzles thrust vectoring system 





eVTOL AIRCRAFT , WHY WE WILL WAIT FOR IT ANOTHER 20 YEARS ?


It's a long story to explain why some VTOL aircraft construction can be better than other . Presently it's boom of VTOL designs ,majority of them are just recalls from 1950's , second attempt to bring them to life . Today only very lazy not offered own VTOL aircraft design and there are reason - electric motors . Looks so simple - just add 4 rotors + motors around the cabin and S'il vous plaît - new aircraft . But reality is not so simple , in 2019 UBER ELEVATE summit engineers announced -  today we still have no batteries working well for e-VTOL , motors have , but batteries - no  .







             JETCOPTER will be better VTOL aircraft 

          ( it will take a time to add all info )


Aircraft for take off will be powered by electric motors ( 2 electric motors per rotor for redundancy and safety ) , after aircraft will take off in 10 m height , the pusher propeller powered by automotive piston motor will start to push aircraft forward . Electric motors will be used for short time -  take off and landing 15 min + 15 min . In flight batteries will be charged by automotive motor .
JETCopter will have  two counter rotating centrifugal fans  , which then divert their airflow to four outflow points. Like other VTOLS, the amount of power given to each output point can be manipulated to control vertical hovering and maneuvering. Once the JETCopter is in the air, its fixed-wing tilts for horizontal flight, and from there it operates much like a jet.




The jump to jet power enables a more continuous and powerful airflow stream. This could make for more advanced maneuvering. It also eliminates the presence of a suctioning force at the extraneous points, which would be much safer in urban environments.
Jetcopter’s distributed power concept opens up a new class of flying cars. New VTOL designs may start featuring jet power points rather than rotor blades at every point and features such as higher ranges and speeds could add value to a higher end segment of the market; people who wish to travel further or faster. 





 PROPULSION SYSTEM

CENTRIFUGAL AIR TURBINE vs AXIAL





Automotive piston motors + electric motors vs turboshaft


Power : 300 kW , weight - 135 kg ,

price -250 000$

TBO - 3000 h



4 cylinder piston : 312 kW , weight -160 kg ,

price - 12000$

TBO - 8000 h


electric motor : 260 kW , weight - 50 kg
Batteries weight for 30 min :        kg
TBO - 20 000 h




                                       Urban flights will require additional capabilities as VTOL aircrafts will operate close to pedestrians and buildings.

                                                               Why not multicopters ?





1st multicopter law :  as smaller rotors are , as more powerful motors you will need .
2nd multicopter law : more rotors = more motors = more problems

3rd multicopter law : more rotors = more air drag


Average helicopter rotor is 12 m diameter , it's 113 m2 disc area !

Most of multicopters have up to 2m diameter rotors , which have 3 m2 or smaller disc area !

That is 37 times smaller than helicopter !

They must have 37 x  rotors to get enough lifting power !

The smaller is rotor disc area - more power you will need for take off .

More power = more motors = more controllers = more batteries = more weight = short flying time .




                                                     video below in short and funny form shows essence of urban air taxi

                                                                  


                               


                                             

              Bell made it with 6                                                                                            Airbus with 4

                                                                                          

                                                 

               Bell Nexus                                                                                                       Airbus airtaxi



                                                                  Jetcopter made with 2 rotors



                              New technology urban VTOL aircraft with automotive hybrid motors , 1000 km flying distance                                                                  


                                                  

Spec :

propulsion : 2 counter rotating 300-400 cm radial air turbines
motors : electric 4 x 250 KW
or
motors : hybrid 2 x 500 KW  
       capacity : 5 seats


flying distance  with hybrid motors 1000 km ( 620 miles ) 
flying distance  with electric motors :  --- km ( --- miles ) to be confirmed
speed with hybrid motors:  > 300 km/h ( 186 mph )
speed with electric motors :  --- km/h ( --- mph ) to be confirmed
 MTOW :  2000 kg  ( 4400 pounds )
safety : 2 parachutes 


Why Jetcopter will be better urban VTOL ?





                                                     

                   

                                                               

                                

JETcopter construction



modular construction



Why Jetcopter will be more efficient VTOL ?



JETcopter will be able to use air lifting power , helicopter not  . 



JETcopter evolution 



Engine  :


       
 2 x 450 hp  automotive with  duplicated fuel , cooling  , power supply systems .


 


 



Reliable and less mechanically complex 


no swash plates , no cyclic , no hydraulics , no clutch .







Take off :  helicopter mode or  plane mode
 fly as plane 












will be able to land at auto parking ,
will be able to maneuver safe between cars











powered by reliable automotive motors ,
may not need helicopter pilot licence 
much easier to pilot









Production costs ( compared with 6 place helicopter ) :

 rotors  -   70 %  cheaper 

carbon fiber fuselage - 50 % cheaper

 motors - 90 % cheaper






Operational costs

predicted 60-70 % lower than helicopter










 better aerodynamics
better functionality











 equipped with 2 parachute life saving system 











fuselage all made from carbon fiber

                                         

                                           


















Tilt wings with 4 vectoring nozzles








                                                                                               








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