Equipment for Short Take-off and Landing (E-STOL)


Equipment for Short Take-off and Landing (E-STOL)
Author: David Judbarovski, systems engineering, principle inventor
judbarovski@gmail.com , Linkedin

Abstract
My E-STOL comprises a aerodynamic resistance of quite small area (SAR), being rigid and turnable, and a water jet device (WJD), comprising high pressure water jets in corners of quadrangular frame.
The SAR can be very quickly erected or downed to turn it into additional wing-kite for short gliding in the sky. The WJD provides stabilization below stall speed and serves as start support, while landing or take-off.

It is very attractive for Navy aviation, because allows high cruise speed, extremely short runway, and better reliability vs. helicopter, and we can repeat approach, if taking a portion of ambient sea water, in flight by simple pails.   

The water is thrust out through the jets by gases at high pressure after ignition of “liquid vigorous combustible” (LVC), e.g. stoichiometric composition of ammonium nitrate with urea, and liquefied by a bit of water as a solvent. 

For example, an aircraft of 13.0 ton full weight consumes a little of LVC and about 1.0 m3 of water for soft landing and 1.5 m3 for take-off. Moreover, the E-STOL isn’t obstacle for take-off or landing like ordinary aircraft needs a long runway.

G = Q * t ; Q = F / v ; v^2 = 2 * g * 10 * P
Here G (kg) – water consume for take-off or landing
Q (kg/s) – water outlet
t (sec) – a time of take-off or landing
F (Newton) – the water jets total thrust
v (m/s) – water outlet velocity through the jet’s nozzle (up to 124 m/s)
P (atm) – LVC’s gases’ pressure in the water container (up to 80.0 atm)
g = 9.8 m/s2

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