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Author Topic: SAAB FS2020 Stealth Fighter Concept  (Read 37055 times)

Offline Trident

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SAAB FS2020 Stealth Fighter Concept
« on: April 14, 2010, 12:34:51 pm »
http://www.flightglobal.com/blogs/the-dewline/2010/04/video-stealth-fighter-demonstr.html

Looks quite similar to the (twin-seat, twin-engine) design proposed by Saab to South Korea for co-development a while back. If there is anything special about the canards related to Saab's patented signature reduction methods, I can't see it - although the configuration is notable for not having the canards and the wing in the same plane, as most canarded stealth designs do.
« Last Edit: April 14, 2010, 12:36:43 pm by Trident »

Offline Skyblazer

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #1 on: April 14, 2010, 06:19:00 pm »
Very interesting and amazingly realistic in flight. Any explanation as to why a naturally unstable design can fly so well in model form? I gather that a real life, full-size article would normally fly using complex fly-by-wire split-second adjustments to stay aloft... but can one emulate that on such a small replica? Thanks for any insight on this and sorry for such a naive question from a non-expert.

Offline Sundog

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #2 on: April 14, 2010, 06:33:49 pm »
To me it looks like the original Lockheed Martin STOVL fighter design. However, IIRC, the wing and canard are too small to accurately model the flight characteristics of a full size vehicle. I remember we studied this in school and I believe it's a function of Reynolds Number, but that was a long time ago. Go back and look at pictures of those subscale models that were flown of the X-29 before the full scale aircraft was attempted. The wings and canard seem much larger than the fuselage, proportionally speaking. That was so they could more accurately model how the full size aircraft would fly.


Offline mz

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #3 on: April 15, 2010, 06:25:40 am »
The model doesn't need to be naturally unstable?
Move the cg forward and adjust the incidences.

Alternatively it could use gyros. (MEMS perhaps, they're tiny and cheap.)

Offline Creative

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #4 on: April 15, 2010, 10:37:50 am »
It looks a little different from a model of a SAAB project posted here by Matej http://www.secretprojects.co.uk/forum/index.php/topic,1161.15.html but I wonder if they're still related. The video description did say "They got CAD drawing from SAAB..." ???

Offline Woody

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #5 on: July 13, 2010, 09:56:12 am »
I, for one, am always delighted to see new fighter designs and unlike most, this one has made it to the flying subscale model stage. I'm sure many of us have contemplated what a stealth Eurofighter or even a stealth F-16 would be like, well good on Saab for giving us the stealth Grippen.

It was mentioned briefly in Flight internationals latest piece on the Grippen NG but this article from Linköping University's website is more informative.

Quote
The division of Fluid and Mechatronic Systems, FluMeS at the department of Management and Engineering, have been rewarded a contract from SAAB and FMV to realise and build a scaled demonstrator of a generic fighter concept.

The concept constitutes a goal and common study object for the defence long term research and development strategy within aeronautics. The concept is a common development between SAAB and FOI with focus on stealth capability, internal load bays and “super cruise” capability.

http://www.iei.liu.se/flumes/aero/gff?l=en

Check out the video of the maiden flight on their site. I would have attached it but it's WMV file.

The wireframe image comes from:-

http://robotpig.net/aerospace-news/saab-new-stealth-fighter-program-_1827

Quote
These images are from an official SAAB presentation for a next generation fighter. It is bigger than the very compact Gripen and has two engines. It has a faceted fuselage with small internal weapon bays for air-to-air missiles. Bigger payload will be carried externally and there will be provision for tight integration with UCAVs.

Cheers Woody
« Last Edit: July 13, 2010, 10:00:57 am by Woody »

Offline Colonial-Marine

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #6 on: July 13, 2010, 09:59:24 am »
Very interesting, I wonder if the MRF program would have turned out any proposals like this.
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Offline pesholito

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Offline Woody

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #8 on: July 13, 2010, 10:26:42 am »
Isn't it the same proposal?

http://www.secretprojects.co.uk/forum/index.php/topic,4739.0/highlight,stealthy+saab.html

Yeah you're right but now we have a picture of the model and video if you follow the link.

http://www.iei.liu.se/flumes/aero/gff?l=en

Cheers, Woody
« Last Edit: July 13, 2010, 10:38:15 am by Woody »

Offline bipa

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #9 on: July 13, 2010, 01:25:59 pm »
Nice to watch it again.
The video had already been posted there:
http://www.secretprojects.co.uk/forum/index.php/topic,9798.0/highlight,saab+video.html
This is an awesome project for students.

Offline ohpossum

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #10 on: July 13, 2010, 09:13:06 pm »
I'd bet solid money that the whole thing is an animation.  1:13 scale and the camera is that steady??? Everything about that video seems fake.



Offline Steve Pace

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #11 on: July 13, 2010, 09:26:52 pm »
You seem to be antimated about that video...
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Offline prolific1

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #12 on: July 13, 2010, 10:32:04 pm »
Quote
I'd bet solid money that the whole thing is an animation.  1:13 scale and the camera is that steady??? Everything about that video seems fake.

The unnaturally steady camera work once it is airborne is not even the most obvious "tell" that this video is indeed fake. This is a poor example of compositing on a film scale, though a decent one on...say...a TV scale. The plates for the aircraft and the stock footage don't mesh well regarding the ambient occlusion in the taxi shot but this is not so cleverly masked by the text that comes on screen. The aircraft departure and taxi footage would be the biggest giveaways however they both utilize editing to make close examination difficult.
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Offline flateric

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Offline Triton

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Re: SAAB FS2020 Stealth Fighter Concept
« Reply #14 on: October 26, 2010, 08:59:39 pm »