OT: These Russian modders are getting really out of hand.

VA_Rapier · Joined: Aug 08, 2008 Posts: 1083

http://igor113.livejournal.com/51213.html

Laughing

_79_niah · Joined: Jun 24, 2008 Posts: 199

amazing thing is that this monster actually moved and was used (well tested afaik) - cold war has produced some weird contraptions on both sides

pucara-ARG · Joined: Apr 23, 2008 Posts: 130 Location: Argentina

wow thats sure looks loke a spaceship..
insane----

Sugar · Posted: Tue Mar 09, 2010 7:06 am Post subject:

I saw a program on this thing years ago. Found a little on Wiki.

http://en.wikipedia.org/wiki/Ground_effect_vehicle

It could carry a lot of weight.

I always thought this was a cool idea.

TomcatViP · Joined: Nov 08, 2006 Posts: 748

Browse W.I.G (Wing In Ground effect or for a more detailed explanation there (a very good site):

http://www.aerospaceweb.org/question/aerodynamics/q0130.shtml

Bartini in Russia was the father of that strange design. Reading some of the related archive will lead you trough more hair rising account of what human thinking can achieve.

~S!

Viper2000 · Joined: Oct 10, 2005 Posts: 2065

400 tonnes flying at 500 km/h <10 m above the sea is scary enough without the missiles...

The fact that google lets me read it all so easily is possibly even scarier though!

VA_Rapier · Joined: Aug 08, 2008 Posts: 1083

terrorfleiger · Joined: Oct 15, 2008 Posts: 268

I know a guy who has one. For the record, he tells me it will easily out-turn a Spit. Very Happy

JZG_Thiem · Posted: Tue Mar 09, 2010 12:50 pm Post subject:

Bulkin · Joined: Mar 12, 2007 Posts: 76 Location: Moscow, Russia

splendours and miseries of russian aviation

pucara-ARG · Joined: Apr 23, 2008 Posts: 130 Location: Argentina

such short wings??

Sugar · Posted: Tue Mar 09, 2010 9:05 pm Post subject:

It only gets about 10 feet off the water Pucara.

Viper2000 · Joined: Oct 10, 2005 Posts: 2065

Ground effect reduces induced drag because the ground modifies the formation of tip vorticies.

Therefore high L/Ds can be attained by pretty low aspect ratio wings. The article claims 25:1 for the vehicle in the pictures. Which is pretty impressive given that the fuselage appears to have the aerodynamics of an SUV...

The other interesting thing about these machines is that the centre of pressure moves aft in ground effect, much as it does in supersonic flight. Which means that if the vehicle is conventionally stable in ground effect, it's likely to have marginal or even negative stability out of ground effect.

Which is pretty much what is described in an account of somebody deciding to take one up to 500 m or so "to find out what would happen". Whether this decision was vodka-assisted is not recorded...

BTW, did you guys know there are several other parts to that blog post? In part 2 you can see the cockpit instrumentation and internal structure. The description of the vehicle as "an aeroplane built in a shipyard" is pretty accurate. The cockpit instrumentation is interesting because it's not quite the same as a conventional aircraft.

It seems to have been designed to operate at up to 10º alpha, with a g limit of 2.5ish. Since 2 g is 60º of bank, this implies flight at almost 1 span mean altitude.

As the tip of the outside wing would be at almost 1.5 spans altitude, it would have much weaker ground effect than the inside tip at say 0.1 spans, and so I imagine that the stability & control implications would have been quite interesting...

FooFighter · Joined: Oct 13, 2005 Posts: 101

http://www.youtube.com/watch?v=MT7ewylPlAQ&feature=related

3min-> theres footage of the plane from first post.

Fender · Joined: Mar 02, 2010 Posts: 3