Author Topic: PRIME X-23 Lifting Body  (Read 4896 times)

Offline Blackstar

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PRIME X-23 Lifting Body
« on: 11/06/2014 10:03 PM »
I was scanning these for somebody and thought I would include them there. Official history of the X-23 PRIME lifting body. I've got some other interesting stuff too.

Offline Blackstar

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Re: PRIME X-23 Lifting Body
« Reply #1 on: 11/06/2014 10:03 PM »
Some more PRIME documents.

Offline Blackstar

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Re: PRIME X-23 Lifting Body
« Reply #2 on: 11/06/2014 10:04 PM »
The flight test summary of the final PRIME flight. They built four vehicles, had three successful test flights and ended the program there. The fourth, unflown, vehicle is in the Air Force Museum in Dayton. There's also a flown PRIME vehicle there, but I don't know which one.

Offline Blackstar

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Re: PRIME X-23 Lifting Body
« Reply #3 on: 11/06/2014 10:06 PM »
Some more PRIME materials.

Offline Blackstar

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Re: PRIME X-23 Lifting Body
« Reply #4 on: 11/06/2014 10:06 PM »
PRIME Familiarization Manual.

Offline Blackstar

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Re: PRIME X-23 Lifting Body
« Reply #5 on: 11/06/2014 10:07 PM »
Some materials on ASSET, which was contemporaneous with PRIME. It was also an experimental hypersonic reentry vehicle.

Offline archipeppe68

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Re: PRIME X-23 Lifting Body
« Reply #6 on: 11/10/2014 08:29 AM »
Thanks a lot for all those PRIME/ASSET stuff, I really do appreciated them.

Online edkyle99

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Re: PRIME X-23 Lifting Body
« Reply #7 on: 11/10/2014 02:28 PM »
Martin Company had a quite a decade, with the Titan missiles and orbital launchers, with Pershing (perhaps the best long range land based ballistic missile the U.S. ever fielded), with the very early "smart bombs" like Walleye, and with X-23/X-24, among other things.  This company did some solid engineering.

First time I've seen plans for an orbital version of PRIME.

 - Ed Kyle
« Last Edit: 11/10/2014 02:33 PM by edkyle99 »

Offline Antilope7724

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Re: PRIME X-23 Lifting Body
« Reply #8 on: 12/21/2015 07:19 AM »
PRIME X-23 Lifting Body Prototype Arrival , Unloading, Atlas Mating and Launch.
From Vandenberg AFB, 21 December 1966 - 11 minute video - San Diego Air and Space Museum



Film from the Atlas Centaur Heritage Film Collection which was donated to the San Diego Air and Space Museum by Lockheed Martin and United Launch Alliance. The Collection contains 3,000 reels of 16-millimeter film.
« Last Edit: 12/21/2015 09:14 AM by Antilope7724 »

Offline Rocket Science

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Re: PRIME X-23 Lifting Body
« Reply #9 on: 02/09/2016 01:39 PM »
With Dream Chaser getting selected for CRS-2, giving this great thread a bump to demonstrate her lifting body ancestry...
« Last Edit: 02/09/2016 10:14 PM by Rocket Science »
"The laws of physics are unforgiving"
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Offline Arch Admiral

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Re: PRIME X-23 Lifting Body
« Reply #10 on: 02/16/2016 08:04 AM »
A common myth about X-23 PRIME is that it had the same shape as the manned X-24 (USAF Flight Dynamics Lab SV-5). Actually it had a large ramp added between the vertical fins to make the SV-5 shape stable during the hypersonic part of reentry, similar to the ramp on X-20 Dyna-Soar. Unfortunately the ramp reduced stability at transonic and subsonic speeds. The X-23 flight vehicles deployed a ballute well above Mach 1 to keep them from tumbling.

The myth persists because the recovered X-23 #3 was incorrectly restored for display at the Air Force Museum. Photos in Jay Miller's book THE X-PLANES clearly show #3 with the ramp after recovery and without it after it was cleaned up at Dayton. They also puttied up the severe damage to the ablative heat shield.

The promoters of the X-38 claimed that X-23 and X-24 between them had proven the SV-5 shape at all Mach numbers, so they could use it without any expensive wind tunnel and flight tests. I don't know if they really believed the myth or were just low-balling the cost to lure NASA into funding the program. In reality they designed two completely new shapes for X-38 and put them through an interminable series of B-52 drop tests that tripled the cost of the program by the time it was cancelled.


Offline GClark

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Re: PRIME X-23 Lifting Body
« Reply #11 on: 02/16/2016 09:30 AM »
The promoters of the X-38 claimed that X-23 and X-24 between them had proven the SV-5 shape at all Mach numbers, so they could use it without any expensive wind tunnel and flight tests. I don't know if they really believed the myth or were just low-balling the cost to lure NASA into funding the program. In reality they designed two completely new shapes for X-38 and put them through an interminable series of B-52 drop tests that tripled the cost of the program by the time it was cancelled.

That's an interesting assertion, seeing as Wayne Hale has stated on his blog that it was the one part of the US segment of ISS that was coming in under budget.

Also, I'm not sure 7 flights is "interminable."

Offline JAFO

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Re: PRIME X-23 Lifting Body
« Reply #12 on: 11/08/2017 12:43 AM »
Bump for the Dream Chaser ALT-2 test.
Anyone can do the job when things are going right. In this business we play for keeps.
Ernest K. Gann

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