Hang Gliding and Paragliding Volume 44 / Issue 1: January 2014 | Page 25

LEFT The Chicken Whisperer team. Left to right: Nate Herse, Zach Hazen, Laura Shane, Marshal Gusman, Mike Sherback | photo courtesy Red Bull. BELOW Of the design process, Hazen says, “I build remotecontrolled airplanes, but designing something that actually lifts one off the ground is a huge satisfaction.” | rendering by Uri Tzarnotzky. 258 Ft. I f you haven’t done so already, Google some YouTube videos titled “man’s early flight attempts.” Rendered in grainy black-and-white are bold pilots testing all types of flight machines: wings flapped by pedal bikes, wings powered by roller skates, men running in early wingsuits. Some pilots catch lift, some hop along the ground, and some crash. All of them are endearing testaments to human playfulness, inventiveness, and imagination. Zach Hazen would fit in well with these early pioneers. The Palo Alto-based hang glider pilot certainly has the chops: he’s an aerospace engineer who has been designing and building paper and RC planes since he was a kid. The only problem is that this 29-year-old sort of missed the era. Zach laments, “Coming into hang gliding in 2010, things were pretty much figured out. I missed out on much of the major R and D and don’t-fly-higher-than-you–are-willing-to-fall phase of free flight.” While most of us are relieved to have had the kinks worked out, there is something crazy-seductive about the will-it-fly suspense of that time period; those pioneers were experiencing a real adventure. So when Zach’s coworker floated the idea of entering a DIY flight contest, Hazen saw a chance to release his inner Michelangelo. They assembled a team and set to work designing “The Chicken Whisperer”—a homemade glider that would set a world record at the Red Bull Flugtag contest held in Long Beach, California. Flugtag, which literally means “flight day” in German, is a worldwide contest sponsored by Red Bull. Entrants launch their DIY aircraft from a 30-foot dock into the water in front of a crowd of thousands. Design guidelines are strict: The wingspan can’t exceed 28 feet, the total weight must be less than 400 pounds., and the work and design window are limited to just a few months (and dozens of other specs). Entries are judged on creativity, showmanship, and distance. Some of the contraptions at Flugtag are entertaining flops, trussed-up creations that plunk straight off the dock into the water. But one entry, The Chicken Whisperer, caught air—a record-setting 258-foot glide, to be exact—and exceeded by 29 feet the previous world record set in Germany in 2012. Hazen’s team also addressed the showmanship aspect of the contest with a choreographed dance in chicken costumes, but that was just a fun aside for Zach: “Distance was everything in my mind. It’s all I cared about.” Secrets Of Success Two crucial design decisions enabled the Chicken Whisperer to fly so well. One was airspeed. The team ran and launched it off a moving walkway, using the combined velocity to produce thrust. The other crucial detail was the wingspan. The Flugtag rules restricted them to a 28-foot span. Since a longer wingspan equals better glide, they got around this constraint by adding “winglets” that helped the wing to act aerodynamically as if it were about 32 feet. The other challenges arose from dealing with Flugtag’s no-harness rule. The only way a pilot HANG GLIDING & PARAGLIDING MAGAZINE 25