Wind Shear, Sheer Panic
(Foster City, CA, USA)
For years, I had begged for a "kite with cartoon characters on it" (aka a retail kite), and finally, for my 10th birthday, I got a box kite with the "Garfield" characters on the panel. The kite was about 3 feet tall, just about a foot shorter than I was, wind-rated 5-20 mph, and recommended to be used with 50 lb test line. The strength of the line alone should have been a big clue about how much resistance that kite would have once up in the air.
I lived on a cul-de-sac with no trees, and we used to fly our kites in the street. The wind was blowing about 9 mph, so I had no problem getting the kite up in the air. I loved how spectacular it looked while airborne; it reminded me of an old, World War I era bi-plane. The sight must have distracted me, because I kept letting out more and more line, not realizing that the kite was getting up into the higher elevations, and higher wind levels.
The higher the kite went, the harder it became to control, and I began to realize why 50 pound test line was recommended. The kite began to tug hard, and I felt my feet get dragged a little over the pavement; it was now putting out slightly less resistance than my own body weight, and it seemed that the more I tried to reel the kite in, the more it resisted.
Finally, in an act of desperation, I threw myself sideways onto the pavement and pulled with all my might and weight. This was my big mistake--apparently, my pulling to the side altered the airflow over the surface of the kite, and it now had zero lift. I watched in horror as the kite plummeted straight to the ground at what seemed to be terminal velocity (obviously not, but to a 10 year old, it certainly looked like it). The kite smashed vertically into the pavement, hitting it so hard that the spars and struts shattered and pierced the plastic.
I collected the shattered remains of the kite, walked home, and had to explain to my parents what had happened out there. My Mom grounded me for destroying a brand-new (and expensive) kite, but my Dad, a commercial airline pilot, was a little more understanding. "Wind shear" he said, "it caused an immediate loss of lift and an irrecoverable stall. Thank goodness no one was hurt."
That was the day I reconsidered my career choice - I was obviously not going to be an airline pilot.
E-book special of the month (25% off)...
The Sode is a traditional Japanese design, and this MBK version is exciting to watch in rough air!
If you have made Diamonds before, this kite takes a little more time to make. It's still a straight-forward build though, using the same techniques as used for my Dowel Diamond.
Get the e-book for making the MBK Dowel Sode kite. The cambered sail makes this a very efficient design. Of the Dowel kites, this design is one of my personal favorites!
This Sode flies steep and steady over the Light wind range, and starts to move around quite a bit when the wind picks up to Moderate levels. Tail(s) are entirely optional, but may be added for looks.
The e-book is a PDF file - which means printable instructions to refer to while you make the kite. It also means convenient off-line access if that suits you better.
Nov 30, 16 06:00 AM
A previously published page, describing three different kinds of parafoils. Illustrated with some great close-up photos...