New Vector-PDF Diagrams

 aircraft, art, drawings, new products, projects, rockets, spacecraft, US Bomber Projects, US Fighter Projects, US Launch Vehicle Projects, US Transport Projects  4 Responses »
May 302016
 

I’ve recently figured out how to get reliably good-quality vector graphic PDF files from my AutoCAD diagrams.These differ from standard “raster” graphics like GIFs and JPGs in that they are composed of scalable lines rather than pixels; this means that they can be printed off at many scales and they’ll retain clarity.

I think a lot of the diagrams would look quite good printed in large format; I’ve previously mentioned that I’m working on a few diagrams specifically for printing off on large format (24X36) mylar, but I’ve others that I think would also look good scaled for 18X24. I’m making these first seven diagrams available, formatted and scaled for 18X24. They can be viewed on screen, printed on a standard printer or printed by a large format printer all with equal clarity.

If this idea appeals, be sure to tell your friends, family, foes, anyone you think might be interested. Also be sure to comment if there are any diagrams I’ve previously created for APR, USXP or elsewhere that you’d like to see in this format. Some of them would be best as multi-sheet diagrams. Suggestions on how to improve also appreciated.

CAD007

CAD 007: Northrop Low Altitude Penetrator

A 1/72 diagram of a 1979 design for a B-2 alternate configuration

Download for $3

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CAD006

CAD 006

A 1/96 scale diagram of the 1979 Rockwell D645-4a spanloader bomber.

Download for $3

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CAD005

CAD 005

A 1/144 scale diagram of the Manned Spacecraft Center MSC Orbiter 020, a 1972 Space Shuttle concept with a single 260″ solid rocket booster.

Download for $3

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CAD004

CAD 004

A 1/350 scale diagram of the 1971 Boeing Resource Air Carrier (AKA RC-1, AKA “Brute Lifter”) designed as a flying oil tanker for the arctic.

Download for $3

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CAD003

CAD 003

A 1/72 scale diagram of the Martin-Marietta “Zenith Star” experimental space-based laser for the Strategic Defense Initiative.

Download for $3

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CAD002

CAD 002

A 1/24 diagram of the Lockheed “Harvey,” the initial concept for a low radar cross section strike platform that eventually became the F-117.

Download for $3

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CAD001

CAD 001

A 1/32 diagram of the North American Rockwell D-541-4 “Surprise Fighter” from 1973, an early stealth concept designed to sneak up on Soviet AWACS planes.

Download for $3

 

Download all seven for $18.90 (10% off)

 

 Posted by at 12:37 pm

Roci: business end

 art, awesomeness, models, Nuclear Pulse Propulsion, rockets, science fiction, spacecraft  10 Responses »
May 262016
 

Progress…

2016-05-25

Probably wisely, the fusion “Epstein Drive” used by ships in the universe of “The Expanse” are not described much at all. Since the mechanics of the drive systems are not germain to the plot, it’s best to leave them as undescribed as the mechanics of the internal combustion engine in a story about someone driving a taxi cab. Still, hints are dropped here and there, including that they use “fuel pellets.” This would tend to indicate that it’s a form of nuclear pulse propulsion, but one with not only an insanely high pulse rate, but also extreme thrust *and* extreme Isp. The result of that should be an extreme amount of waste heat that would need to be radiated, but clearly the ships of The Expanse don’t have giant radiators. There are theoretical ways to explain that away, but from what I’ve read so far it hasn’t been touched on. I know how I explain the lack of radiators on the fusion powered ships in *my* fiction…

UPDATE: In “Cibola Burn,” Alex the pilot gives a very, very brief description of the engine. It uses lasers to crush the fuel pellets and magnetic fields to direct the resulting exhaust. So it *is* clearly a nuclear pulse system, of the inertial confinement micropellet variety.

 Posted by at 8:22 am

OSC Next Generation launcher

 news, projects, rockets  16 Responses »
May 252016
 

SpaceX’s successes with the Falcon 9 is forcing the rest of the launch industry to come up with new ideas. Orbital Sciences has released a bit of info on the Next Generation Launcher, which is based on a Space Shuttle booster first stage with a new Blue Origin third stage (which *might* indicate that the third stage is to be recoverable). And like Falcon 9, the NGL is designed with a heavy version… which has not only a pair of solid strap-on boosters, but a different first stage solid rocket.

Can’t say as that really make a whole lot of sense to me. But I guess we’ll see. First, we’ll see if OSC is truly serious about this, and they actually forge ahead.

With luck a clearer version of this chart will be made public.

 Posted by at 8:26 am

Supersonic Split Line Nozzle

 rockets  4 Responses »
May 222016
 

This here is what you call a  “supersonic split line nozzle.” It’s not commonly encountered out in the wild, but it has been tested for decades for use as a vectorable nozzle on relatively small solid rocket motors, generally military missiles. The ball-and-socket design allows the nozzle to be gimballed (either hydraulically or electromechanically); the unusual location of the splitline (where the fixed part meets the movable part) downstream of the throat means that the joint is moved out of the high-pressure environment within the motor. A nozzle like this *should* have lower leakage and erosion issues that a subsonic splitline nozzle, while being easier to move than a nozzle with a flexible joint (basically a rubber gasket that is bonded to both sides and requires a whole lot of force to horse around) with easier thermal issues.

ssslnozzle

 Posted by at 8:51 pm

Hammerhead ET

 drawings, projects, rockets, spacecraft, US Launch Vehicle Projects  5 Responses »
May 172016
 

A 1977 Rockwell concept for how to expand the utility of the Shuttle system: move the payload from the Orbiter and put it in a shroud ahead of the External Tank. This would have allowed for much larger-diameter payloads to be carried. The ET would of course have had to go into orbit with the Orbiter itself. More info and diagrams of this are in US Launch Vehicle Projects issue 1.

uslp 01-07-1

 Posted by at 8:33 pm
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