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Author Topic: Sänger II aerospaceplane project  (Read 21258 times)

Offline Meteorit

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Sänger II aerospaceplane project
« on: August 13, 2006, 08:43:41 am »
I've always found the German Sänger 2 project interesting, even if it wasn't technologically very feasible.

The development of the Sänger II began at Deutsche Aerospace in 1985. It was the reference vehicle of the German Hypersonics Program and received most of the domestic funding for spaceplane development. The Sänger II was a two stage to orbit vehicle with a large hypersonic air-breathing first stage and a smaller rocket-powered upper stage. The first stage was designed for maximum commonality with a supersonic passenger transport with a Mach 4.4 cruise range of 11,000 km. The upper stage could be a manned reusable HORUS (Hypersonic Orbital Reusable Upper Stage) or an expendable CARGUS (CARgo Upper Stage) for heavy payloads. Full development could have begun in 2004, but the program was cancelled in 1994 for cost reasons. A single Sänger vehicle would have costed about $ 500 million, total program cost would have been $ 20 billion. Design lifetime was 300-500 flights for Sanger, 100-120 orbital flights for Horus.

Sänger II (EHTV)
Crew: unmanned
Length: 84.5 m
Diameter: 14.0 m
Span: 41.4 m
Gross mass: 249,000 kg
Empty mass: 149,000 kg
Propellant mass: 95,000 kg
Engines: 5 x Co-axial turboramjet
Sea-level thrust: 5 x 300 kN
Propellants: Air/LH2
Burn time: 6,565 s
Hypersonic lift-to-drag ratio: 4.8-5.3
Maximum speed: Mach 6.8

Horus
Crew: 2
Length: 27.6 m
Diameter: 5.5 m
Span: 15.6 m
Gross mass: 96,000 kg
Empty mass: 23,100 kg
Propellant mass: 69,600 kg
Payload: 6,000 kg to LEO; 3,300 kg to space station Freedom with personnel
Engines: 1 x ATCRE (ATC-700)
Vacuum thrust: 1,280 kN
Propellants: Lox/LH2
Burn time: 298 s

Cargus
Crew: unmanned
Length: 32.8 m
Span: 15.6 m
Gross mass: 96,500 kg
Empty mass: 11,500 kg
Propellant mass: 71,000 kg
Payload: 14,000 kg to LEO; 2,500 kg to GEO
Engines: 1 x Ariane 5 engine
Propellants: Lox/LH2

I have seen varying dimensional and performance figures, probably from different stages of the vehicle's evolution. Any feedback or corrections to the above data would be appreciated. Also any pictures besides those at http://www.astronautix.com/lvs/saegerii.htm and those of the Revell model would be nice. IIRC a scale model was constructed and should now be on display somewhere. Any pics of it? Also anything more on the EHTV (European Hypersonic Transportation Vehicle) passenger airplane version of the first stage.

Offline flateric

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Re: Sänger II aerospaceplane project
« Reply #1 on: August 13, 2006, 09:29:29 am »
Following is from Dec.1993 AIAA document prepared by MBB so that's probably semi-final drawings and numbers before project went nowhere.
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Offline flateric

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Re: Sänger II aerospaceplane project
« Reply #2 on: August 13, 2006, 10:09:45 am »
more
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline Matej

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Re: Sänger II aerospaceplane project
« Reply #3 on: August 13, 2006, 10:15:31 am »
Partialy nowhere. In the late 90s, program was partialy once again opened under ESA studies FESTIP (Future European Space Transportation Project) funded by EU. Thanx to it some of the proposed technologies were realized and tested. The result was that full development will cost some 15 - 20 mld Euro and that is something what ESA cant paid for.

http://www.hitechweb.genezis.eu/spacefighters5.htm
« Last Edit: July 21, 2008, 05:44:22 am by Matej »

Bizarre aviation expert.

Offline flateric

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Re: Sänger II aerospaceplane project
« Reply #4 on: August 13, 2006, 01:35:25 pm »
For reference, here's 1989 Saenger II configuration
« Last Edit: August 13, 2006, 01:39:02 pm by flateric »
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline flateric

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Re: Sänger II aerospaceplane project
« Reply #5 on: August 13, 2006, 01:40:05 pm »
More on 1989 and 1993 Horus/Cargus
« Last Edit: August 13, 2006, 01:48:09 pm by flateric »
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline Meteorit

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Re: Sänger II aerospaceplane project
« Reply #6 on: August 13, 2006, 02:14:26 pm »
Thank you flateric, I knew I could trust in you.  :)
I wonder if there are any high-res three views, or cross-section drawings, as I would like to make a 3D model of this project.

Matej,
Actually the FESTIP program almost directly followed Sänger II, and ran from 1994 to 1998. It was then superseded by FLTP (Future Launchers Technologies Programme).

Offline flateric

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Re: Sänger II aerospaceplane project
« Reply #7 on: March 24, 2008, 01:34:04 pm »
Comrades, ahoy! Igor Afanasyev calling for your help again...for an upcoming article in Novosti Kosmonavtiki of Saenger II, help needed with promotional graphics/photos/etc (cool pics in one word) of Saenger II that were around in the early 90s.

Please help if you can.
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline Michel Van

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Re: Sänger II aerospaceplane project
« Reply #8 on: March 25, 2008, 05:09:39 am »
Sänger II had  also like his Grandfather RT-8-01 Raumtransporter
to be launch on hotwater Booster
see Ron Miller book "The dream Machines"
page 608 and 609

there also some drawing of first version of Sänger II on page 608

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Offline mz

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Re: Sänger II aerospaceplane project
« Reply #9 on: March 25, 2008, 07:35:08 am »
Crazy design. Typical eighties hubris.

Offline richard

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Sänger's 1991 configuration
« Reply #10 on: May 02, 2008, 01:08:26 am »
I never saw a single fin Sänger proposal before

(From Flight 1991)

Offline Michel Van

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Re: Sänger's 1991 configuration
« Reply #11 on: May 02, 2008, 02:43:42 am »
year is strange and complet useless

that gigant fin for a Mach 7 aircraft
and how to launch the second stage with out ramming the fin ?
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Offline Orionblamblam

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Re: Sänger's 1991 configuration
« Reply #12 on: May 02, 2008, 07:05:50 am »
I never saw a single fin Sänger proposal before

And you still haven't. That's a two-fin booster with the far-side fin either cropped out of the photo or not in place on the model (possibly incomplete or a cutaway model). If you look at the base of the fin, it's clearly offset towards the camera, which was close and had somethign of a wide-angle lens.
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Offline McTodd

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Re: Sänger's 1991 configuration
« Reply #13 on: May 02, 2008, 11:45:04 am »
...That's a two-fin booster with the far-side fin either cropped out of the photo or not in place on the model (possibly incomplete or a cutaway model). If you look at the base of the fin, it's clearly offset towards the camera, which was close and had somethign of a wide-angle lens.

I think you're right there - in fact, judging by the way the rear straight edge of the fairing over the booster's engines is angled towards the right, which potentially places the vanishing point roughly mid-way along the 'big' fin, I would say that the port fin is actually present but due to the angle is on the far side of, and thus masked by, the starboard 'big' fin.

BTW, damn fine job with APR V1N5, ta!  ;)
« Last Edit: May 02, 2008, 11:47:04 am by McTodd »

Offline pometablava

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Re: Sänger II aerospaceplane project
« Reply #14 on: May 02, 2008, 03:17:01 pm »
Topics merged