New kind of VTOL aircraft with breakthrough advantages

New kind of VTOL aircraft of breakthrough advantages

Author: David Judbarovski, Israel

short CV in https://www.linkedin.com/in/david-judbarovski-1390944a/ ,

my last papers: http://judbarovski.blogspot.be , archive: http://judbarovski.livejournal.com

[3777]-05.10.2017

VTOL is provided by a service device comprises two cylinders of Kevlar flexible thin walls, one inside another, filled by the air of controlled pressure, while its internal pressure is vacuum and the said device external pressure is slightly higher than at ambient air. The said VTOL device is lifting an aircraft till a possibility of its flight by itself with service device can be folded, when cruise. The service devise is 20 times lighter than a payload vs. helicopter empty weight being equal to its payload.

The internal vacuum serves to lift the aircraft, while the external pressure with a help of thin ropes inside the external cylinder serves to keep coaxial position of the said cylinders. 

For example,

Aircraft of 25 ton weight can be lifted from its hot start position with 4000 kW engine’s power  in 100 sec with lifting rate of 20 m/s and then more quickly till 5000 m height using negligible power. Analogously, we can need only 60 sec to leave the land immediately after landing in a case of emergency using 3000 kW power else.  .

A landing can be more quickly than lifting, nevertheless we can reach a land with practically zero of vertical velocity  

All those can have special military interests and breakthrough advantages, and civil applications, e.g. in the light of my conception of three levels of transportation as its third level (see “Progressive Transportation Manifesto”, http://judbarovski.blogspot.co.il/2017/05/progressive-transportation-manifesto.html)