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User Artwork / Re: X-30A COPPER CANYON and Tupolev Tu-2000A
« Last post by Meteorit on Today at 12:27:41 pm »
Finally some comparison views of both vehicles. Note the size difference, though no exact dimensions for the "Government baseline" vehicle are available. Takeoff weights 36,000 kg vs 70,000 kg. Which one is more realistic? ;)
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User Artwork / Re: X-30A COPPER CANYON and Tupolev Tu-2000A
« Last post by Meteorit on Today at 12:23:58 pm »
The Tupolev Tu-2000A was to be a demonstrator of a single-stage to orbit spaceplane comparable in function to the US X-30 vehicle. Development started in 1986 as a response to NASP.
Length: 55.5 m
Wingspan: 14.0 m
Height: 12.25 m
Empty weight: 40,000 kg
Take-off weight: 70,000 kg
Propulsion: 2 x D-100 turbofans (Mach=0-2.5), dual-mode scramjet (Mach=2-20), 2 x liquid-propellant rocket engines (Mach>=20), all using slush hydrogen fuel.
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User Artwork / X-30A COPPER CANYON and Tupolev Tu-2000A
« Last post by Meteorit on Today at 12:22:06 pm »
My 3D models of two comparable 1980s SSTO projects:

This one is meant to represent the "Government baseline" vehicle that was the end result of the $5.5-million COPPER CANYON study program run in 1984-1985, and input for NASP Phase 2. It was scaled up somewhat from the initial "du Pont baseline" which was to be an "F-15 sized 50,000 pound (22,700 kg) vehicle" to an "SR-71 sized 80,000 pound (36,000 kg) vehicle". Propulsion was provided by du Pont designed engines using a scram-LACE cycle. Payload 2,500 pounds (1130 kg) to polar orbit, propellant mass fraction 0.54, Isp 1,400 s, delta-V 47,000 fps (14,300 m/s).
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Designation Systems / Re: UTVA designations
« Last post by hesham on Today at 09:12:36 am »
Utva C-3 Trojka (Trey) - 2 seat trainer, first flown 1946, built during early 1950s by Ikarus as the Ikarus 251 Trojka (though I have seen it described as UTVA 251 too).

My dear Hood,

I think it was P-251,because this company used anther series,such as P-418.
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Designation Systems / Re: Ikarus post war projects
« Last post by hesham on Today at 08:43:17 am »
Hi Blockhaj,

unfortunately no more Info available about this aircraft,but I will check my files.
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Designation Systems / Re: Ikarus post war projects
« Last post by blockhaj on Today at 08:30:15 am »
A reference in Flight to the Bristol Orpheus turbojet having been supplied for use in the B-12:

http://www.flightglobal.com/FlightPDFArchive/1956/1956%20-%201241.PDF

Tiny picture of the B-12 windtunnel model attached.
Do u have more info about this plane?
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Theoretical and Speculative Projects / Re: Fictional Warships - Novels
« Last post by Graham1973 on Yesterday at 07:10:35 pm »
David Poyer, The Cruiser, 2014

United States

USS Savo Island (CG-???)
Ticonderoga Class Cruiser
Details as per the class members fitted with VLS.

USS Monocacy (CG-???)
Ticonderoga Class Cruiser
Details as per the class members fitted with VLS.

Both ships are fitted with prototype Ballistic Missile Defence software/missiles (SM2 Block 4A). It is also implied in novel that the Aegis Combat system includes a fully autonomous combat mode (Only intended for defensive use...) descended from the system tested out aboard the Kidd Class Destroyer USS Barrett (DDG-998) in the novel 'The Passage'.

Plot summary: As the US gets ready to attack Iraq following 9/11 (Bush the Youngers War), Dan Lenson, an officer considered the best person to bring troubled ships back to fighting trim (As he did in 'China Passage' and 'The Command'.) is assigned to a new ship, one carrying a prototype weapons system, but suffering from a dispirited/splintered command team and a mysterious illness. Will he be able to turn the ship around, or will he end up like the last captain, fronting a board of inquiry.

Note: Up to this book, the Dan Lenson series has roughly paralleled actual history, this is the first novel to seriously diverge from historical events that I have read.
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Designation Systems / Re: Westland designations
« Last post by hesham on Yesterday at 08:13:37 am »
Hi,

here is my speculation and suggesting about all Westland series;

-WT : that designation began in early of 1920 by WT-1,raising up to WT-27,and maybe more

-W : was for aircraft,maybe began in early 1930s by W.1,and continued up to W.38

-W : second use of this series,maybe started after WWII,passing with W.37 for N.114T

-W : third use of this designation,maybe launched after WWII,with W.50 up to W.80,W.81,
                   W.85 & W.90,for helicopters only

-WG : was for helicopter and VTOL aircraft,is still existing to this day as I think,WG.1 to WG.34,
                      appeared in early 1962
-P : used from 1930,with P.1 up to P.15,no more Info available

-P : second use of this sequence,from early 1940s,P.1000 up to P.1061,maybe raised more

-Model : we find Model-606 & Model-656,guess it started from Model-500 ?

-J : early 1940s,used for Jet powered aircraft only,J.1 to J.15

-PJD : a Project Drawing,early 1940s,from PJD.1 up to PJD.310

-PDD : also a Project Drawing,for helicopter compound and VTOL aircraft,PDD.1 up to PDD.45
                        grew up in 1960s ?

-SD : I can't ID it well,SD.522 for Brabazon IIA,I think it was a series of early drawings began with
                     SD.1 or SD.100 ?

 Any additions or corrections are welcome
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Propulsion / Hispano-Suiza 12Y-21
« Last post by Jjr on June 23, 2017, 10:35:23 am »
Is there any body who can tell me if the 12Y-21 was only for water cooling or was it also posible the cool it with glycol?
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