Flying Apparatus With Flexible Shell and Coanda-effect

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The technical solution is based on a flight apparatus with flexible outer shell, powered by the pressure effect described as the Coandă-Effect, apparatus built as an experimental model.

This is an innovative solution for all flying apparatus with vertical take-off, high-speed flying apparatus, or the ones which require a robust and compact body – reentry body – at high altitudes and high speeds. The compact built and propulsion technology also is fit for landing and flying in tight locations, and cause its compact construction it takes less space as far as storage space.

Lenticular vehicles with Coandă Effect are suitable for movement in air, but also in water (under water), using the same propulsion principle. Because of the developed propulsion system and compact built, very tight turns can be made, not only left-right, but also up-down. Tilting on every axis is the major advantage of this system of displacement. Simple and robust construction.

• High reliability
• Low production price
• High specific power on the active surface
• Optimum functioning at low speeds or when stationary
• High traction at vertical take-off
• Great protection without complex mechanical systems by original geometric construction works
• Great application in toys, drones, personal transport vehicles, submersible crafts

As a military “vehicle”, it offers a greater tolerance from direct hits, for the pilot but also the rest of the propulsion system and mechanism, because it is placed in a central position. In case of a failure, cause of sustained damage, a ballistic parachute can be fitted.

The exterior body of the vehicle is at best to be lenticular, ovoid.

Our experimental (aero)model is based on a toroid.
Retractable wings or aerodynamic breaks can be added to the built.

The retractable/folding body from the build is superior to the rigid build because of its flexibility, the mechanical resistance of the construction, but also because of the superior functionality – through its exceptional maneuverability in any situation, given by the control of the entire surface of the lenticular body: by slow and controlled blowing of the bearing surface, but also through the interchangeability of the surface, this through the possibility of determining the shape and amplitude of the Aerodynamic Profile’s curve – according to the Patent No. 00121196, CLASA B63H9/04 from 06.12.2006–the movement inside de fluid mass is maximized.

The dual Turbine-Type Compressor is contra rotating, and it compensates for the steering moment – a multipe build, which optimizes the compression process of the work-fluid cause of the geometric shape of the intake duct which has a splay cylindrical shape and the spiral type exhaust, or centrifugal, with peripheral ejection.

The cost effectiveness for manufacturing this aero-spacial vehicule is much greater then other ships, because of its compact shape which reduces the exposed surfaces, eliminates completally the (rigid) wings, but also the immovable and mobile stabilizers: horizontal (rudders), vertical (stearing) – heavily under pressure and which a great change of them getting damaged.


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  • Name:
    Danut Sobol
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  • Danut's favorite design and analysis tools:
    Pen and paper
  • Danut's hobbies and activities:
    scale models, wood working, bicycles
  • Danut is inspired by:
    Scientific research and the conquest of new frontiers.
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