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Author Topic: Doug Stout's Arrow Canard build (split off from the Stunt kite design tool)  (Read 357185 times)
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Doug S
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« Reply #600 on: October 15, 2018, 09:30 AM »

breezin,

Mike was flying to the song "Bali Hai" from the movie South Pacific.  Mike likes to dress to accent his music and routine.

Doug
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« Reply #601 on: October 16, 2018, 07:26 AM »

Well there went 3:41 minutes of my life. Beautiful  Smiley.
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Doug S
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« Reply #602 on: November 08, 2018, 06:52 AM »

For those of you who do not receive AKA Kiting Magazine, the following link provides access to download my article on bridle lines for single line kites, single line glider kites and dual line stunt kites.  Enjoy!

https://drive.google.com/file/d/16_QWoU-o-dVTwYFDb9KxKgmGPdJQUXBn/view?usp=sharing

Your in kiting,

Doug
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Doug S
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« Reply #603 on: November 08, 2018, 07:03 AM »

The following provides my updated flyer for my swept forward wing glider kites.  If you are interested in one being constructed one for you, just drop me an email or PM so one can be completed before the up coming end of the year holidays.

https://drive.google.com/file/d/1naUc3meXxRn_zBLINx8ZViHJSNsKl609/view?usp=sharing

Regarding my new Raptor 48, I am presently tinkering with the bridle where the kite now has an adjustable bridle to assist in the process.  The flight performance is what I was hoping for and I just need to refine the bridle to optimize flying line control.  Thank you!

Yours in kiting,

Doug


« Last Edit: November 08, 2018, 07:06 AM by Doug S » Logged

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Doug S
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« Reply #604 on: November 30, 2018, 07:11 AM »

Lining up my winter development construction projects.  Based on the great flight performance of my Raptor 36M and Raptor 48F single line swept forward wing glider kites, I scaled up the design to version with a 74-inch wing span.  The wing span was selected to allow me to use one-meter lengths of the CST DPP 0.157-inch OD carbon tubes for the wing spars.  Five years ago I designed a X-29 canard glider kite using the outline of the lifting surfaces for the actual NASA X-29.  I never found time to build it due development of my single sail swept forward wing glider kites.  I dusted off the design and refined the panel layouts, which I will build this winter.  This canard glider kite will have a 42-inch wing span, like my Rapere canard glider kite.

The attached pictures show my completed Raptor 48F and the color layouts for my Raptor 74F and X-29 Canard.

Yours in kiting,

Doug

Doug Stout's Raptor 48F


Doug Stout's Raptor 74F Color Layout


Doug Stout's X-29 Canard Color Layout
« Last Edit: November 30, 2018, 07:20 AM by Doug S » Logged

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Doug S
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« Reply #605 on: January 04, 2019, 07:43 AM »

Happy New Year!

Before the long holiday break, my source of Dyneema Composite Fabric (fka Cuben Fabric) had it in red (0.7) at a density comparable to the blue (0.51) that I use for the center panel of my 36 inch wing span swept forward wing single line indoor glider kites (Bird of Prey, Viper and Raptor).  My source is Ripstop by the Roll.  The following provides the path to view what they have in stock for this fabric:  https://ripstopbytheroll.com/collections/dyneema-composite-fabric.

My source identified the color as pink, but it's really light red with the shade like the blue that I use.  Due to the thin nature of the fabric at these densities, the dye color will produce is a lighter shade.  I ordered a length of this fabric to give it a try and build a new Raptor 36M with it.  The following picture is of this build in process on December 29, 2018.  I finished building the new Raptor 36M on January 30, 2018 and it weighs about the same as my version with the blue panel.  It balances were desired without needing the 0.1 grams of nose weigh that is needed for the version with the blue panel.  Will test fly it next week.

Yours in kiting,

Doug

« Last Edit: January 04, 2019, 07:52 AM by Doug S » Logged

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« Reply #606 on: January 04, 2019, 07:57 AM »

that is an outstanding color! .....very very nice....
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« Reply #607 on: January 04, 2019, 10:52 AM »

Sweet layout sir.
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Doug S
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« Reply #608 on: January 05, 2019, 09:04 AM »

Rob and John,

Thank you for the kind words.  The following provides a picture of the completed Raptor 36M with the red center panel, next to the Raptor 36M with a blue center panel that I have been using for indoor competition for over a year.  They both weigh 8.2 grams.

Yours in kiting,

Doug


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Doug S
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« Reply #609 on: March 25, 2019, 03:12 PM »

I updated the plans for my Bird of Prey 36 and 36M, Raptor 36M and Viper 36M.  The changes are as followings:

 - Changed the Cuben Fiber designation to Dyneema Composite Fabric (DCF).
 - Indicated the location for each of the hand stitch holes for the various reinforcements.

Google Drive Link:  https://drive.google.com/drive/folders/0Bwj9y_lTaMmFfm9QWmZzOHpzNC0ySWp2VVBIMHJmeXJPaHZTazY4SXV4dG5NWEMtSUpJLXM?usp=sharing

I will update the plans for the Bird of Prey 18 and 24 in the very near future for the changes listed above.

Yours in kiting,

Doug
« Last Edit: March 25, 2019, 03:15 PM by Doug S » Logged

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« Reply #610 on: April 03, 2019, 07:40 AM »

I updated the plans for my Bird of Prey 18, 24, and 24S.  The changes are as followings:

 - Changed the Cuben Fiber designation to Dyneema Composite Fabric (DCF).
 - Indicated the location for each of the hand stitch holes for the various reinforcements.

Google Drive Link:  https://drive.google.com/drive/folders/0Bwj9y_lTaMmFfm9QWmZzOHpzNC0ySWp2VVBIMHJmeXJPaHZTazY4SXV4dG5NWEMtSUpJLXM?usp=sharing

Yours in kiting,

Doug
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Doug S
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« Reply #611 on: April 17, 2019, 11:45 AM »

Began construction of my Raptor 74F prototype.  The following are pictures of the assembly process for the 24 PC31 panels.  Due to the size of this glider kite with a 74 inch wing span, I took over the dinning room table for the assembly process.  I have each panel on the plan labeled to indicate the assembly order, so the color order goes from darker to lighter, where I assemble from the back side of the kite.  During assembly for each panel, I place scrap paper under the seam, so when I add the glue along the edge it doesn't get on the plans.  Once the glue is applied, I remove and dispose of the scrap paper, and then add the next panel.  Using the glue stick allows me to adjust alignment during the assembly process.  After assembly is complete, I clean off the excess glue with rubbing alcohol and paper towels on my glass work table, carefully wiping in the direction of the seam.  I then let the assembled panels dry overnight where the glue drys clear.  Next step is to sew all the seams with a straight, where the seams are only 3/16 inches wide.

Yours in kiting,

Doug

Raptor 74F - 24 PC31 Panels Cut Out, Each Panel is a Double for the Left and Right Side


Raptor 74F - Panel Assembly in Process


Raptor 74F - Panel Assembly Completed, Rear View


Raptor 74F - Panel Assembly Completed, Front View with the Tips Folded In

« Last Edit: April 17, 2019, 11:57 AM by Doug S » Logged

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« Reply #612 on: April 17, 2019, 11:56 AM »

how different is the silhouette of the 74 vs the 76?
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« Reply #613 on: April 17, 2019, 12:59 PM »

Thief,

Good question.  The Bird of Prey 76 (Patriotic Eagle and Simple Bird Layout) has a wing span of 76 in., center length of 42 7/8 in., projected sail area of 1,303 sq.in., and leading edge forward sweep of 14 degrees.  The Raptor 74F will have a wing span of 74 in., center length of 45 in., projected sail area of 1,267 sq.in. and a forward leading-edge sweep of 17 degrees.  They are basically the same size, an outline that appears to be identical unless you put them side by side to see the slight differences, with the Raptor 74F having a slightly smaller wing span and sail area by 2.7 percent.  This size of my swept forward wing glider kites are designed around the CST Composite DPP 0.157 in. OD carbon tubes.  For the wing spars, I use almost a 1-meter length of this tube.  As a result, I needed to reduce the wing span of the Raptor by 1.0 in. on each side due to the additional forward wing sweep of 3 degrees to allow me to use a 1-meter length of this tube.  I anticipate the total weight and wing loading to be about the same.

Regarding performance, the additional forward wing swept of the Raptor with the associated longer center provide a few performance benefits, as observed in the smaller versions of the Bird of Prey (36M and 48) and Raptor (36M and 48F).  The additional forward wing sweep of 3 degrees, additional washout of 3 degrees at the wing tips under load due to the additional forward wing sweep, and the slightly longer center provide more stability, the same glide slope, a smoother turn and ability to turn overhead while maintaining the glide slope.

As a point of reference, the Raptor is my third generation of the swept forward wing design concept that I introduced in the Fall of 2017.  I have been using my Raptor 36M for indoor competition since the Fall of 2017 and have experienced these performance benefits.  The Raptor 36M does everything that I could ask for this type of kite.  I also have experienced these performance benefits in the Raptor 48F, when compared to the Bird of Prey 48 since the Fall of 2018.

As a point of reference, my Bird of Prey is the first generation and the Viper is the second generation of my swept forward wing design concept.  The Viper, with its forward wing sweep of 20 degrees and longer center, is very friendly and a joy to fly in the version with the 36 in. wing span.  The Viper 36M increases the glide slope when executing a turn above my head, which I find as a limitation for my indoor routines.  The Bird of Prey is very stable above my head and limits my ability to execute a turn above my head, which I find as a limitation for my indoor routines.  As a result, I developed the Raptor that is a blend of the positive performance attributes of the Bird of Prey and Viper.  This is why I selected the Raptor platform as my next glider kite to scale up to this size.

Once I complete the Raptor 74F, I will perform the same side by side comparison to the Bird of Prey 76 and see if these performance benefits exist.

Yours in kiting,

Doug
« Last Edit: April 17, 2019, 01:02 PM by Doug S » Logged

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« Reply #614 on: April 17, 2019, 04:43 PM »

Thanks Doug! Are you shooting more for indoor (and zero wind) flights with the raptor or would it handle okay outside with slight wind gusts?
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