Why don't we see more Soft-wing Ground-Gen AWE systems without pumping-cycles?

Engineering System Design
2

Welcome to the forum @jellepoland,

There is an alternative which is discussed on What is possible with Payne's patent US3987987 figure 5? about Payne’s patent US3987987 figure 5:

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Experiments and video on:

That said, as often in AWE field, when a drawback is solved, another drawback occurs…