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Douglas X-3 Stiletto X

I will be in possession of the entire Test-Flight research reports by end of day. Please don't buy anything until I get back to you. It may contain what you need. :) 12 PDF reports.
 
Milton Shupe said:
Bjoern,

It's not nightmarish to model, but to get it right would require cross sections.

The issue is not the front; it's the mid-section to end of afterburners.
Click to expand...

I was looking at that last night/this morning which is why i posted the pic from the paper airplane company. It shows the joint that defines ( my words arent so good right now.. sorry ) the section. If we remove the mouse ears Whats left is simply two opposing triangular cones fitted together. The mouse ears get added on to form the sides and define the engine tunnel. They are almost extraneous, and the flat sides of the plane are nearly an illusion..

douglas_x_3__stiletto__by_sfreeman421-d7e85q5.jpg


What chaffes my hide, is that all these model companies that make plastic models, work directly from drawings such as you need. And they keep them locked away..
 
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930090201.pdf

Figures have a better 3 view and Gear diagrams


https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930088730.pdf

Figure 3. 3 view shows additional engineering definitions angles and dimensions


Pam, I have them all now. 10 PDF's that are relevant.

All can be found here:


https://ntrs.nasa.gov/?N=0&Ntk=All&...m=123|Collection|NASA STI||17|Collection|NACA

If this link doesn't bring up the search results. Search for "Douglas X-3"

All the info for EXACT AIR FILE creation are contained in the these research reports.

You're welcome! LOL :)
 
000rick000 said:
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930090201.pdf

Figures have a better 3 view and Gear diagrams


https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930088730.pdf

Figure 3. 3 view shows additional engineering definitions angles and dimensions


Pam, I have them all now. 10 PDF's that are relevant.

All can be found here:


https://ntrs.nasa.gov/?N=0&Ntk=All&...m=123|Collection|NASA STI||17|Collection|NACA

If this link doesn't bring up the search results. Search for "Douglas X-3"

All the info for EXACT AIR FILE creation are contained in the these research reports.

You're welcome! LOL :)
Click to expand...

Perfect.. Thanks Rick. I still remember how to do nested calculations within larger calculations, so maybe if i write everything out long form, I can make sense of it again..
 
Penzoil3 said:
It will take awhile to get here from England. Let you know asap... Don't tell anyone I did something nice, you'll ruin my reputation.
LOL
Sue
Click to expand...

LOL Sue; the secret is safe with me, indeed. :)

No hurry on the shipping; I know it takes 10-14 days for delivery.

I have the B-26 Marauder project to wrap up, and I have the FSX Native radial-based Grumman Mallard to complete, about 65% done now.
 
000rick000 said:
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930090201.pdf

Figures have a better 3 view and Gear diagrams


https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930088730.pdf

Figure 3. 3 view shows additional engineering definitions angles and dimensions


Pam, I have them all now. 10 PDF's that are relevant.

All can be found here:


https://ntrs.nasa.gov/?N=0&Ntk=All&...m=123|Collection|NASA STI||17|Collection|NACA

If this link doesn't bring up the search results. Search for "Douglas X-3"

All the info for EXACT AIR FILE creation are contained in the these research reports.

You're welcome! LOL :)
Click to expand...

Well done Sir; thanks :)
 
You see, we think of airplanes and well, we think of what we know to be airplanes with everything in its standard position. This plane broke all the rules. the J-34 engines were below the reference atum line, but centered with center of lift, which is unusual compared to what we see in most aircraft made since then. The entire tail cone/empannage is the fuel tank, so now you have all your fuel well above the reference datum line and behind the CG. I remember studying one aircraft which had fuel tanks in the vertical stabilizer. I mean, this was the dawn of the jet age, and frankly, these guys didnt know how to design a jet. They were breaking new ground every day, and planes like the X-3, X-4 starstreak and others went a very long way into pioneering todays aircraft. The X-3 was perfect for what it did, as a result of its poor design. The J-42 jet engine that the X-3 was supposed to have had, never materialized and the planes primary role could not be fullfilled, but what it gave us has saved millions of lives over the years through better design engineering..
 
warchild said:
You see, we think of airplanes and well, we think of what we know to be airplanes with everything in its standard position. This plane broke all the rules. the J-36 engines were below the reference atum line, but centered with center of lift, which is unusual compared to what we see in most aircraft made since then. The entire tail cone/empannage is the fuel tank, so now you have all your fuel well above the reference datum line and behind the CG. I remember studying one aircraft which had fuel tanks in the vertical stabilizer. I mean, this was the dawn of the jet age, and frankly, these guys didnt know how to design a jet. They were breaking new ground every day, and planes like the X-3, X-4 starstreak and others went a very long way into pioneering todays aircraft. The X-3 was perfect for what it did, as a result of its poor design. The J-42 jet engine that the X-3 was supposed to have had, never materialized and the planes primary role could not be fullfilled, but what it gave us has saved millions of lives over the years through better design engineering..
Click to expand...

Pam,

Maybe you overlooked the very large fuel tank in the belly just behind the cockpit and below the AC section, and well forward of the CoL/CoG/MAC 25-75.
Since in the belly at the widest part of the fuselage, I'd bet that its capacity exceeded that in the tail section which was narrow but long.

"... the J-36 engines were below the reference atum line, ..."
My drawing shows the engines above the reference datum line. ???
 

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Milton Shupe said:
Pam,

Maybe you overlooked the very large fuel tank in the belly just behind the cockpit and below the AC section, and well forward of the CoL/CoG/MAC 25-75.
Since in the belly at the widest part of the fuselage, I'd bet that its capacity exceeded that in the tail section which was narrow but long.

"... the J-36 engines were below the reference atum line, ..."
My drawing shows the engines above the reference datum line. ???
Click to expand...

I stand corrected. Thank you.. Please be patient with me today. It's a very rough day. The worst yet.
 
I've been living afloat for a number of years, so, no postbox, no library's, which is a minor down side. Upside, no junkmail, by-law screws, other humans with giant subwoofers and no brain; no JW's or LDS knocking on the door at 08:00 either, unless they want to swim a long, long way, and risk being harpooned.:a1310: I was thinking more in terms of somebody's scanned and PDF'd it, somewhere...:untroubled: Best thing ever is the cheap dish and Hughes. But, that may be a dead end-the X-planes book. The EDF R/C guys may be wrong despite the claim, yet somebody's done a set of sections drawings. Still beating the bushes. Somebody will score. Fired off some inquiry's to the AF museum and NASA's PR flack, see if that gets a response other than getting blown out of the water by a Predator:biggrin-new:
 
lazarus said:
I've been living afloat for a number of years, so, no postbox, no library's, which is a minor down side. Upside, no junkmail, by-law screws, other humans with giant subwoofers and no brain; no JW's or LDS knocking on the door at 08:00 either, unless they want to swim a long, long way, and risk being harpooned.:a1310: I was thinking more in terms of somebody's scanned and PDF'd it, somewhere...:untroubled: Best thing ever is the cheap dish and Hughes. But, that may be a dead end-the X-planes book. The EDF R/C guys may be wrong despite the claim, yet somebody's done a set of sections drawings. Still beating the bushes. Somebody will score. Fired off some inquiry's to the AF museum and NASA's PR flack, see if that gets a response other than getting blown out of the water by a Predator:biggrin-new:
Click to expand...

Where do you live; down at the gates in sausolito???
 
Another interesting read:

https://www.thisdayinaviation.com/tag/douglas-x-3/

Bill Bridgeman: "
“Then one morning Johnny called me to his office. ‘Bill, we would like you to take a look at the X-3. Maybe you would like to test her. She’s in the final stages over in Hangar Three. Go over and take a look at the mock-up. See what you think. . . ‘ On the ground floor in front of a door marked KEEP OUT. SECRET PROJECT MX656. . .

“I climbed aboard. In order to get into the cockpit, the seat was mechanically lowered to the ground. There was a button to raise the elevator. It buzzed ominously as it very slowly lifted me into the nose. Visibility was extremely poor from her windows, they were faired-in exaggerations of the Skyrocket slits. It was impossible to see the ground. The thin, insecure looking wings were so far behind me that they were out of sight. It would take some weighing to decide whether or not I wanted to bet my life on the integrity of this ship. . .

“I was afraid to take on this airplane. I was also afraid someone else would accept the challenge. And I was afraid that I would decide to accept it.”
 
I don't have any good drawings of it with cross sections, but I am asking around. I'll let you know what I find.
 
ok, so, I have a question for you guys before i start digging into this flight model.. Do you want me to model both the powerplant it had AND the power plant it was supposed to have ( which never appeared ), or do we want to just use the one powerplant??
 
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