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Versioni mai costruite dell'X 15

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Re: Versioni mai costruite dell'X 15
« Risposta #20 il: Dom 01/07/2007, 19:30 »
You're right Michel.
The X15 Blue Scout was conceived as "economic launcher" for the last stage of a Scout missile.
The system not convinced all USAF due to techical complexity (Blue Scout launched by X 15 launched by NB52A) and very small payload achievable.

Anyway a specific section regarding X15 Blue Scout will part of my X15 presentation the next AstronautiCon. If you will, and can, join us I'll be glad.
 

Re: Versioni mai costruite dell'X 15
« Risposta #21 il: Dom 01/07/2007, 20:47 »
The X15 Blue Scout was conceived as "economic launcher" for the last stage of a Scout missile.
The system not convinced all USAF due to techical complexity (Blue Scout launched by X 15 launched by NB52A) and very small payload achievable.
In un certo senso era un sistema a 3 "stadi", 2 dei quali riutilizzabili.


Paolo Amoroso
 

Re: Versioni mai costruite dell'X 15
« Risposta #22 il: Mar 03/07/2007, 14:30 »
i made littel calcualtion

I take the Scout A stage 3 and 4 plus 100 Kg payload
X-15A 14184 kg + 1715 Kg  Scout 3/4 makes 15899 kg
B-52 Payload 27000 kg

Delta V
B-52              277,77 m/s Max
bonus          321.00 m/s do to lanuch to ward East from 46 degrees northern latitude
X-15            2266,59 m/s
Scout 3/4   5367,13 m/s
make    8232.49 m/s

Orbital speed 7900 m/s
rest of 332,49 meter/sec reserve for losses (gravy, Control error etc.)

the question is this cheaper as Scout A launch cost of  8.610 million. in 1985 dollars???


"Spiacente per il mio italiano difettoso: è il risultato di un traduttore automatico poichè non sono italiano!"
 

Re: Versioni mai costruite dell'X 15
« Risposta #23 il: Mar 03/07/2007, 14:50 »
The calculation seems good to me.
Frankly speaking I really don't know how much cost a X15-Scout B launch vs. a Scout missile.
It is possible to extrapolate the figure given known the cost of each X15 launch, adding the cost of the Scout A stage 3.

Perhaps the end of X15-Scout B project was not only due to economical calculation but even for the complexity to handle a manned launch vs. an unmnanned launch.
 

Re: Versioni mai costruite dell'X 15
« Risposta #24 il: Mar 03/07/2007, 20:28 »
I found data zu X-15 Programs Cost !
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19670001999_1967001999.pdf

$602,000 (in 1964 $) for each Flight of a X-15
with Hardware already pay off by X-15 Program !
and with that $1000000 Launch cost of Scout A 1964
http://www.bernd-leitenberger.de/scout.shtml
that 680000$ to build Scout-A 680000/2 = $340000 for Stage 3 & 4
make $ 942000 for Launch X-15 with Scout Stage 3 & 4
not so cheap as $1000000 launch of a Scout A


"Spiacente per il mio italiano difettoso: è il risultato di un traduttore automatico poichè non sono italiano!"
 

Re: Versioni mai costruite dell'X 15
« Risposta #25 il: Mer 04/07/2007, 09:27 »
....that 680000$ to build Scout-A 680000/2 = $340000 for Stage 3 & 4
make $ 942000 for Launch X-15 with Scout Stage 3 & 4
not so cheap as $1000000 launch of a Scout A

Yep, with the further complication to have a manned launch....
 

Re: Versioni mai costruite dell'X 15
« Risposta #26 il: Dom 26/08/2007, 15:25 »
there is good stuff for sale
Republic AP-76 (X-15) detailed design report
A 70 page PDF presentation on Republics entry into the X-15 contest, containing a *lot* of detailed design data on the structure, subsystems, variants and the carrying arrangement (it was to be carried aloft by the B-36, not the B-52, with the pilot being able to enter and leave the "X-15" through the B-36's bomb bay). Packed full of illustrations, and scanned in high-rez grayscale for best image quality.



for unly 8$ worldwide shiping from Scott Lowther

 http://www.up-ship.com/drawndoc/drawndocair.htm
"Spiacente per il mio italiano difettoso: è il risultato di un traduttore automatico poichè non sono italiano!"