By Bjorn Fehrm

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July 28, 2025, © Leeham News: In Part 4 of our five-part series on examining the potential next generation of aircraft in the coming decades, we take a closer look at Aircraft 5 to 8 in our Figure 1.

Figure 1. The 13 airliners we look at in the series. Source: Leeham Co.

These are the (5) GE, NASA, and Boeing hybrid airliner, (6) Airbus ZEROe hydrogen airliner, (7) Boeing’s NMA, and (8) the Boeing New Light Twin.

We examine the market for these aircraft, their technological challenges, and their potential future.