A dramatic new type
of airplane wing has been turning heads
at airport terminals all over the country.
Airlines such as Southwest have recently
been installing new “swept-up”
wing tips on their Boeing 737s to increase
fuel efficiency. What makes airline travelers
stop and stare is that the tips on these
new wings rise dramatically upwards, like
a dorsal fin sticking high out of the water.
Boeing 737 with winglets.
What’s even more unusual is that
a non-aerospace company, Pocock Racing
Shells, played a major role in developing
these wing tips. So what’s a boat
manufacturer doing developing wing tips?
It all started back in the mid-1990s
when Bob Lamson, a consultant for Aviation
Partners – Boeing (APB), contacted
Pocock president Bill Tytus. APB was in
the process of developing wing tip additions,
called winglets, which would improve aerodynamic
efficiency. Lamson, a retired Boeing test
pilot and a composite field visionary,
was familiar with Pocock’s cutting
edge work with composite materials for
their racing shells and thought they would
be perfect for the winglet prototype work.
“The winglets needed to be lightweight,
strong and cost effective – just
like our racing shells,” said Tytus.
“Boat manufacturers can be much
more flexible and innovative than airplane
manufacturers. We’re at the cutting
edge of what these materials can do.”
Interestingly enough, 80 years earlier,
Pocock worked with another pioneering
aviation company. In the early 1900s,
George Pocock helped William Boeing make
pontoons for his fledgling airplane company’s
first float planes.
In 1995, Pocock began working on the
first winglets for APB. Over the next
five years, Pocock worked on several different
full-scale, flying prototype winglets.
The first prototype was for the Gulf Stream
II, a private commercial jet.
Gulf Stream II with winglets.
“The Gulf Stream II winglets were
made with the same resin and materials
as our boats, but unlike the boats, they
were built without a mold from the inside
out,” said Tom Evans, Pocock shop
manager.
The testing on the Gulf Stream II prototype
was extremely successful, with a seven
percent improvement in fuel efficiency.
The next prototype winglet Pocock worked
on was for the Boeing 737. This prototype
was even more successful, with a 10 percent
increase in fuel efficiency.
“The winglets give these old 737s
new life,” said Tytus. “It
takes an airplane that was designed more
than 40 years ago and makes it perform
as well as the very latest airplane design
– it’s quite remarkable.”
The 737s were not the only high performance
vehicle that benefited from Pocock’s
work on the prototypes. This new technology
was also incorporated into the racing
shells that Pocock builds.
Pocock production team with prototype
winglet.
“Working on these winglets gave
us tremendous insights into highly loaded
structures and provided us with valuable
data on how to build a stiffer, longer-lasting
racing shell,” said Evans. “The
same principles of stiffness are applied
whether you’re flying through the
air or flying through the water.”
|