Kestrel DG200 canopy mod.
On Friday, November 15, 2019 at 8:39:50 PM UTC-8, Charlie Quebec wrote:
You will be 16kg + parachute over the maximum pilot weight 110kg, ( this is also the limit for the harness as standard) and out of the CG range without adding tail ballast, and worst of all, after that, significantly over the max weight of the none lifting parts. The Canopies are not blown, as they get too thin as they stretch, they are formed by forcing a plug upwards into the hot plastic.
Not trying to rain on you parade, but you should know this.
You are not raining on my parade...
By no means, I welcome all thoughts.
As to CG, I am moving my body weight farther back into the wing by two inches--where water ballast normally would be. All calcs and work will be done professionally--with wife not accepting self as a test pilot. That dog don't hunt.
The sailplane I own has a empty gross weight of 330kg, and fully loaded gross weight of 472kg. That leaves 15.42kg for gear, that I may or may not add at a future date. The rest of the gross weight is my Canary Ass at 125.552Kg at Seven foot, two inches tall...
Short guys are the lucky ones when it comes to gliders. Strap on and go, I have always flown customized gliders--with last being a Pilatus B4. My heart was broken when the club let that bird go--too much bird that fit too few people in the club. Our soaring club formerly was mostly novice flyers--outside of perhaps ten of us old goats.
Back to the Kestrel...
Even added roughly 4kg as a penalty of a serious harness upgrade. The mounts also had to be backed with aluminum load distribution plates. The nice folks from a tandem parachute company helped me obtain the 500Kg five point harness I am yet to purchase in fire engine red, royal blue, charcoal, or grey. If people can hang safely from the harness with a second person attached for two years--seems reasonable it can keep me from bouncing in a seat for ten years.
Agreed on making a plug for the windshield--and thermoforming, sometimes writing faster than I think and edit. Basic plan is to make a carbon fiber turtle deck--saving kg's, a carbon fiber windshield enclosure--saving more kg's offsetting the weight of the comfortable six inch rise in new window. As the housing that extends to the front of the glider--it will be more efficient in not dumping precious laminar flow.
I am not looking to gain more L/D--just get published values. People do not realize that L/D is illusive and not many people truly attain all their bird has to offer. Seals, air leaks, anything destroys laminar flow--I am not being a test pilot--I am just conscientiously eliminating wasted L/D.
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