One theme to my recent reporting and media support in the personal aviation industry has focused on the advanced materials from which the latest aircraft are composed. Composite airframes have matured over the past 20 years—no more overbuilt Beech Starships; now we have more than 10,000 Cirrus SR series singles delivered. But beyond the “skin” lie applications for everything from carbon fiber to thermoplastics in game-changing ways.
Hartzell’s Composite Props
Case in point: Hartzell’s ever-expanding line of composite propellers. The first composite prop was essentially a wood core with a metal leading edge—but we’re way, way beyond that now.
We have had the pleasure of supporting Hartzell’s media efforts at AERO this year, and it’s been very cool to have a front seat to the deep dive they have provided on just how different their new props are. Laid over a rigid urethane foam core, dozens of layers build up the body of the blade over a stainless steel shank. A nickel cobalt leading edge protects the robust blade, belying its thin profile. These stand up so well to the rigors of flight that they have essentially an unlimited life—they can be overhauled repeatedly, adding materials back up to spec rather than filing them away.
A recent white paper released by Hartzell outlines just how this is done, and it’s worth a read, since their props can be found on everything from the CubCrafters Carbon Cub to the Cirrus SR22T to the Daher TBM 960.
That Citation Longitude Wing
Another place where you’ll find advanced materials making manufacturing more streamlined—and often reducing parts count—lies within the wings and fuselages of Textron Aviation’s Citation Longitude and soon-to-debut Beechcraft Denali. I sat down with Jimmy Beeson, vice president of product innovations at TextAv, and he described how they are able to build the wing monolithically on the Longitude, and they are applying similar principles within the airframe of the Denali. The clean-sheet designs allow for this development—and form one solid reason why we can’t just innovate iteratively. We need to start from scratch to realize the biggest leaps in technology.
Aura Aero’s Integral R
While a composite aerobatic aircraft doesn’t feel quite as new, the beauty of the recently EASA certified Integral R two-seater lies more than skin deep. The R made its stateside debut at the Sun ‘n Fun Aerospace Expo, and no less an aerobatic star than Mike Goulian has taken it up as his latest mount.
