Thank you for your response.
If the fan keep both outputs equal,two of themcan be made a self-sustaining and energy providing with the expolitation of the front output. This doesn't violate second law of thermodynamics. Please read it again.
The first statement absolutely violates the law, by definition, a self sustaining machine in a closed system IS the definition of a perpetual motion machine and therefore violates the first and second laws of thermodynamics.
If HAAM can become a self sustaining and energy providing system it can not be classified as a perpetual machine. Because a perpetual machine gets only one input but HAAM gets two inputs.
A perpetual machine doesn't work because the idea is to feed back the output as input, instead of the external input, to keep the machine perpetuating, working none stop. But the output is always less than the input because a major part of output consumed inside the machine. So the output comes out from the machine is a lot less than the input.
In the case of HAAM, you have two parallel operating machines. One of them is a usual machine, two fans or more, and the other is hydro-atmospheric. Both fans get an external input and provide an output a lot less than the input. An electric or hydraulic machine could have an efficiency of upto 90% but a heat engine has an efficiency of less than 50%. Assume the ducted fans of HAAM are electrical and has and efficiency of 70%.
A fan generates two outputs, one at the front as a lower atmospheric pressure and one at the back as higher atmospheric pressure. But the fan works only to generate the higher pressure output at the back, it has nothing to do with the lower pressure output at the front. The fan uses all the external input to generate higher pressure output at the back, lower pressure output at the front doesn't cost any external input of the fan.
Both outputs have a thrust. Front output can have a maximum potential thrust of 14.7 psi or 1 kg/sq centimetre. But back output can have more than that. But assume we keep both outputs equal and assume the fan has an efficiency of 70%. This means the fan generate a higher pressure output of 70% of the input at the back. This also means we have another 70% at the front without input cost. So total efficiency becomes 140%. Feed back 100% as input to run the fan and use the other 40% for any use.
The front output is not something from nothing. It is atmospheric pressure differentiation between external atmospheric pressure and atmospheric pressure between the blades of the fan. When the fan operates, it throws out or pumps out air between its blades. This causes lower atmospheric pressure between blades. This causes external atmospheric, which is higher, to rush to fill the vaccuum between blades. This is compatible with first and second law of thermodynamics.