I have an idea which I cannot take to the production stage myself. I am sending it by way of getting contacts (electronic engineers, manufacturers or investors) for helping me with a 3 dimensional circuit manufacturing idea (already well worked out). Here goes: We already have turbojet engines on aircraft. Now the idea is to take the exhaust of two of them and pipe it into the same tube, then trough a charged grid that makes a large static electric field. The field must be strong enough to ionise much of the combustion products (Kerosene oxidated). The recombination after passing trough the grid should give extra thrust. The cool thing is that no fuel is needed for the ionisation - the grid can be recharged periodically from capacitor(s) which can be charged while the aircraft is on the ground. The turbojets may both be mounted skew ( / \ ) if neccessary as long as they produce the same thrust (the sideways thrust would cancell). The only theoretical concerns are then charge relaxation, dielectric brakedown, coronal discarge and the heat and corrosion resistance of the parts. Orientation by magnetic field may also be neccessary to ensure the recombination happens orderly. I can work out the charge relaxation concern, but the dielectric brakedown may need to be determined practically. If the exaust is an Omic conductor (likely since there must be ions in the gas due to the heat) the discharge of the grid due to charge relaxation can be estimated by permitivity/conductivity = charge relaxation time. A large value would give slow discharge. I will look for the data. If the discharge is too fast to be practical we may still have an advantage: speed boosts activated whenever the pilot decides. May work with ramjets too.