XST first glimpse

Secret or Developing projects, first peeks...

XST first glimpse

Postby AADX » 03 Apr 2009 15:41

:ugeek:

render_yafray_1024.jpg
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Re: XST first glimpse

Postby kiofka » 03 Apr 2009 18:05

DUDE!!! AAAAWESOME!!! I'm holding my credit card in my hand...
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Re: XST first glimpse

Postby GlowWorm » 17 Apr 2009 06:55

Could I hold yours too?

AADx: excellent move!
kiofka wrote:DUDE!!! AAAAWESOME!!! I'm holding my credit card in my hand...
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Re: XST first glimpse

Postby AADX » 25 May 2009 15:19

While considering the "ST" style ships as aircraft, another one that has always been an influence going back to the X450M, is the "Romulan Warbird" style.

I'm leaning toward the Romulan Heavy Cruiser style. Imagine that baddie on the RAMP at the local Executive FBO.. Disruptors ready. :shock:

Either can work aerodynamically, I think the HC would have a better chance without the bi-wing issues of the BC style. I'm thinking the gear would be pleasantly robust, and even for an aircraft to carry some Romuan influence into the color and surface design. There is a Shuttle design too that works okay, but it's wing form and top down view are not the most ideal.

But seriously. I'm excited at the concept of devising the most original valid precedent "aircraft" forms by which these centuries forward spacecraft would be rooted, design and form-factor wise, on. I can imagine the Heavy Cruiser style as an aircraft at a scale similar to...a Hawker 400-800. Not the most useful for interior space, but possibly a decent size multipurpose compartement in the aft hull, and a decent size passenger compartment in the nose. So that aft section could be a car garage (thinks Aston Martin DBS) or a small Suite. While the forward section would be flight deck and....

Vegas has seen the XST and is anxious to do some Star Trek style outfits and pictures. I can only imagine what she might do for some Romulan style outfits too. With the newly released Star Trek movie out now, with "Enterprise" that has very "jet" looking engine nacelles.. is the perfect time for these. More on the XST in another message entry.

heavycruiser_c5.jpg


battlecruiser_zv1B.jpg


romulan-shuttle.jpg


:cylon1: in the WAY WAY WAY BACK MACHINE: AADX 450M "Marvin" Martian Airliner

The Dual wing does pose a problem aerodynamically for the pressure region between the wings and double induced drag. The X450M was a dual wing with hybrid jet turbine, ramjet Martian atmosphere Airliner. Relying on dual wings for double the wing surface area and deflection lift. But it still had a ~400kt takeoff and landing speed.. sadly constant changes to x-plane-mars destroyed the usability of the X450M. X450M was designed and run in X-Plane 5.x with Mars. I'd installed regional airports aligned along straight course paths so departing one and holding a straight course, setup for being received at the distant Martian Airport. Changes to the navaid system, apt/nav dat file system, navaid transmission/receiver distance. and of course flight model. Takeoff was at full power, with afterburner, on a 3 mile takeoff run with launch cable. Landing was at ~1 degree approach angle, high flare automated greaser into arrest wires. Anyway, it was fun while it lasted.

ImageImage
ImageImage

Image
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Re: XST first glimpse

Postby GlowWorm » 25 May 2009 15:30

That'd be a very interesting and sexy design to fly. Looking forward.
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Re: XST first glimpse

Postby AADX » 25 May 2009 16:03

XST project snippit...

I feel most comfortable with the XST at 44' overall length. I feel that keeps it at a GA scale, while permitting a useful interior height but not being too big structurally. Engines are PW300 series, 305 or 307 I think. Smaller than the enclosures, but the nacelle enclosures (as designed at that size) permit for some area around the engines for some electronics, antenna's, and systems elements.

Presently I have a logistics problem with getting from ground level, up onto the back where there'd be a walkway up the flat surface of the top of the rear, to the access door on the trailing edge of the saucer section. The height of the rear deck is nearly 6' off the ground, so thoughts of a flip over and down ladder/stairs. stairs that extend down from underneath and a hatch that opens on top. I really don't want to cut into the bottom of the saucer section for a ladder up port, and at GA scale, can't expect to have ramp/FBO provided steps everywhere to get up on the back. So far steps that extend out the rear and lower down, and retract back up is where i'm feeling.

All of the heaviest materials are in the hull body section, distributed around the MAC cg point. The center hull body area can house all computers, equipment, radar and such. I'd reserve the top of the saucer section for the gps sensor, and the "deflector dish" area for weather and surface radars. All of which leaves the saucer section free for habitation materials. controls, displays, seats, and small galley & lav possibly. Ultimately the weight of the entire craft is distributed along the entire length of the whole craft. Since the entire length is various lifting bodies and airfoils

xst_scale_comp.jpg

wire_scale.jpg


render_1024.jpg


xst_flowfield.jpg


To make sure my thinking was in line with real science, I entered the same airfoil form that is the saucer section lifting body, spoon like form. To see the flow field and pressure fields that will generate the lifting forces. The Saucer section has two lifting components, clean air flow field, and lower face deflection surface. The nature of "canard" type aircraft with lifting surfaces forward of CG is that if they are too strong, they can flip the aircraft end from end, by affecting pulling the nose behind the tail. The more ideal sense is a balanced design where all wings stall at the same time. So the worst that happens is a high deflection angle, entire craft stall, fwd and aft lifitng surfaces all stalled, with rear surfaces more authoritative to get the tail in line first, then resume flying speed aerodynamics.

The design does employ fairly aggressive artificial stability AOA limits, but even at the upper end of the AOA limit, the design just gets so deflection draggy that speed erodes down to stall levels and cleaning up the flight profile resumes clean aerodynamics and returns to stable flight. There are only TWO moving flight control surfaces. Mixed Elevon rear wing flight control paddles. On the engine pylon wings, the large area controls there effect pitch, and roll combined. While Vacuum ports outboard of the engine pylon wings effect "drag rudder" vacuum drag for yaw regulation. The oversized engine nacelles also serve to act as large surface areas for deflection stabilizers. The vacuum pumps for the yaw-affect vaccuum ports are in the engine nacelles driven by ram air. An emergency ram air hydraulic pump is in there too, so ultimately, even in a total system failure, ram air driven vac, hydraulic and trace electrical provide enough control capacity to glide fly the ship down to any safe landing.

One of a rare few aircraft where every single square inch of the entire aircraft is partially responsible for the aircrafts aerodynamic flight ability. Even the oversized jet intakes act as lift scoops at takeoff AOA. The only main holdup is all the time required for 3D, textures, 3d interior, and entirely custom 2d panel content for ST like displays. She flies already, and get this. is trans-continential, trans-oceanic range at Mach 0.8~

Any uniform requests? i'm going with the ST:TOS minidress or ST:TNG first season minidress. Vegas, the order is in. "Make it So!" ENGAGE.

Guess I just suppose, which would be cooler on the Executive FBO ramp. an XST or Rom Heavy Cruiser style. or both. How Trekkie. sounds like a Las Vegas fly-in to the scifi convention. :geek:
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Re: XST first glimpse

Postby AADX » 24 Sep 2009 17:02

Among other things like crashing helicopters, and snooping around the dark corners of the skunkworks hangar.. I walked over to XST44, looked at the clock, and said.. yeah... lets go. Rolled her out onto the strip, belted into the crude in-progress spartan seat and controls...

Spooled up the PW 305's... ATHR 180 KTS.... WYSIWYG

Image

Aerodynamically. what you see is what is happening. it's not a 3d model on a conventional acf.. that is the plane.. and it flies, as you witness.... and remember.. overall, it's about double the size of a L25. see images above for scale reference to L25 & G2. Only TWO control surfaces, the 'flippers' on the rear engine pylon wings.

EDIT: This has been hiding on the artwork page for quite a while. thought I'd add it here so you can see where the concept originated from

Image
Here’s to the crazy ones. The rebels. The troublemakers. The ones who see things differently.
While some may see them as the crazy ones, we see genius.
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Re: XST first glimpse

Postby AADX » 06 Jul 2012 16:28

screenshot_0.jpg

... and people think Burt Rutan was visionary. :D
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Re: XST first glimpse

Postby AADX » 18 Jul 2012 18:20

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Re: XST first glimpse

Postby GlowWorm » 31 Jul 2012 16:06

Yeah that'd be cool to fly that shuttle. I feel a disturbance in the force. :-)
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