VTOL X-Plane challenges industry and innovative engineers to create a single hybrid aircraft that would concurrently push the envelope in four areas:
- Speed: Achieve a top sustained flight speed of 300 kt-400 kt
- Hover efficiency: Raise hover efficiency from 60 percent to at least 75 percent
- Cruise efficiency: Present a more favorable cruise lift-to-drag ratio of at least 10, up from 5-6
- Useful load capacity: Maintain the ability to perform useful work by carrying a useful load of at least 40 percent of the vehicle’s projected gross weight of 10,000-12,000 pounds
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