| 2017 was a busy year for rotorcraft and other vertical-flight applications. |
| Engine technology developments in 2017 included advances in open rotors, hypersonics, and electric propulsion. |
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| You'll see some rare birds, including the only airworthy Aero 45 in North America and one of eight flyable Standards in this gallery that harkens back to the early days of aviation. |
| Efficiency, emissions, noise, speed, affordability, accessibility—all challenges ahead for aviation and aerospace. |
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