Concepts only: Doodles without numbers

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Radicaldude1234

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May 30, 2009
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413
Location
Front Range, Colorado
What's the floor to roof around the pax seats? Looks like a pretty big conventional craft. Large bore 6 cyl? Pax look way aft of CG.
Points:

-The humans shown are sized for the upper limit of the population. If they fit, most will.

-That's the engine size I'm aiming for!

-I eyeballed the CG. Haven't run any aerodynamic calc yet.

-It's a concept I've had on my mind for awhile and is a kind of "smallest-high-performance-4-hauler" study. Whipped it up literally a day ago.

-Aerodynamics are relatively easy to nail down (just move the wing fore/aft) and adjust size of surfaces.

-It's just smidge smaller than the larger Lancair models out there. It's intended to be a realistic representation of how compact I can design an airplane without it looking funky.

-Not trying to cryptic....but I'm sticking to my vow of no numbers in this thread ;)
 

mcrae0104

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Oct 27, 2009
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4,283
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CO
Funny how HBA works. :)

OP: Post your stuff, no pressure of technical claims, details, etc. Here's mine.

Two posts later: hey, whaddabout these three or four details?

OP: Here are some details...

@Radicaldude1234 thanks for sharing. Will look forward to others doing the same.
 

cluttonfred

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Feb 13, 2010
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World traveler
From my files, this goes back before 2001 from the old TWITT (The wing is the thing) flying wing site and group. The page is still there: The Dreams of Jerry Blumenthal

THE DREAM MACHINES OF JERRY BLUMENTHAL

Jerry Blumenthal's RATTLER, the result of many years design refinements by this former General Dynamics wind tunnel model builder. He felt the straked front fuselage section would be the key to its success. Note that he used wing-tip mounted spoilers for additional roll and yaw control. The aft portion of the tail cone also split open to provide speed and glide path control. Unfortunately, he passed away before he could complete any radio model testing of the design, since he did plan on building a full scale version for his private use.

If you like the general design, we know Jerry would love for you to take it on as a model or better yet a homebuilt glider. He was not protective of his designs and wanted them to be available to anyone who liked them and would use them for other basic designs. However, this design does not have any detailed drawings (he didn't get that far) so you are on your own if you decide to take it on as a project.

Presented below is a collage of Jerry's other design concepts. As you can see he was very prolific when it came to using pen and ink to express his his dreams of what a flying wing sport plane should look like. Some of these he put into very basic balsa models for hand glide tests and most had flew relatively well. You can also see his RC model mixer for use in very thin wings which uses standard bell cranks available from any hobby shop (this was going to be necessary for his scale Rattler model had he completed it).

Rattler.jpg blumpg4.jpg blumpg3.jpg blumpg2.jpg blumpg1.jpg
 

cluttonfred

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By the way, those sketches are:
  1. Sport plane inspired by the Avia BH-series
  2. Shoulder-wing, two-axis “Ercoupe” with rudder/elevator controls and a center section spoiler for glide control, no ailerons
  3. Little Mignet type inspired by the HM.18
  4. Low wing with high-mounted canard, visibility is actually great above and below the canard
  5. Biplane ultralight glider with Warren truss bracing and faired K-struts easily adapted to a powered ultralight (I think the idea was to detach the wings as a unit and store them lengthwise next to the fuselage in a trailer or ISO container)
  6. Low-AR Fauvel-style ultralight glider, I think the center section span and chord were 7’ to facilitate storage also in a trailer or ISO container
 

TFF

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Joined
Apr 28, 2010
Messages
17,925
Location
Memphis, TN
The upside down stick needs a correct companion. I always wanted a big Ugly Stick.
 
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