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Lifting bodies?

PostPosted: Sat Aug 20, 2005 6:14 pm
by rch427
Hello all --

I'm looking for any information about experimental aircraft--past or present--that utilize "lifting body" type configurations.  I've read the two books on NASA's lifting body experiments in the '60s, but can't find a thread connecting them to any manned aircraft or gliders (although I seem to recall having a styrofoam glider toy shaped like the NASA models, when I was a kid back in the '70s).  

So far, the aircraft that I know of that are at least related to lifting bodies would be the Facetmobile, the Trautman RoadAir of the '50s, the Aereon 26, and that's about it.  I guess there's a blurry distinction between the true lifting bodies--which have no separate wings, the planes with a Burnelli-type airfoil-section fuselage, and the blended wing/fuselage designs of today.  I'm most interested in the designs that have no discernable wings extended beyond the fuselage.  

Any information or opinions about lifting body designs--in concept, in models or full-size craft--would be greatly appreciated.

Cheers --

Robert

PostPosted: Sun Aug 21, 2005 11:50 pm
by rch427
OK; scratch the RoadAir. I hadn't been able to tell before from the photos that I'd seen that it actually has swing-out wing extensions.

I finally found some info about that flying styrofoam model that fit my criteria: lifting body with no wing extensions. It's made by Robart and has the rather ungainly name of the "UFO Top Gun Glider".

http://members.aol.com/RBGliders/Robart ... loseup.JPG

http://www.kidstoysplus.com/images/prod ... l_1166.gif

http://www.rcgroups.com/articles/ezonem ... p00428.jpg

I guess where I'm going with this is wondering why the lifting body configuration seems to be so little-utilized in experimental civil aircraft. I'm nowhere near being an expert on the subject, but I'd think that the super-low aspect ratio could theoretically provide enough lift for one person, and that composite materials would make building it feasable.

Opinions?

PostPosted: Thu Dec 13, 2007 4:52 pm
by Christian Gelzer
Which two books on lifting bodies have you read? I presume one was Dale Reed (and Darlene Lilster), but the other? By Milt Thompson?

In the end the lifting bodies served only one purpose for the folks at NASA: enter the atmosphere at Mach 25 or so and fly to a landing spot. While the HL-10 was better than the M2-F1, and the X-24B the best of all, they all presumed a rreturn from space, where the energy of the craft overcame the pathetic L/D of the aircraft.

You're after something with no discernable wings, it seems. How do you propose to fly it--how fast and so on?