Topic Author
Posts: 2327
Joined: Thu May 20, 1999 6:04 am

New Stt

Wed Apr 07, 1999 11:00 pm

i think its time that we all started looking at the STT concept again. It is not so magical and distant - we've had daily supersonic flights a couple of decades now. So, when and how will the next supersonic transport prensent itself to the world. I personally think that the aircraft should only be used for long range flights. Nothing say, under a minium of something between 7-10 hours flight time by existing jets. For two reasons, but we don't need that sort of speed advantage on domestic flights or intra europain or North American etc, and to try and keep noise to a minium. But on routes like Sydney to LA, or Europe to Australia, or USA To Europe it would be nice. Mostly trans oceanic flights - that way no body is disturbed and we might be able to get away with not meating stage 3. It doesn't have to be as fast as Concode - 1500 kmh, or say something like mach 1.5 should still make a big time saving. But if we can go mach 2 lets do it. If its done on a larger scale, i am sure that economy supersonic class, would be more popular than business class on subsonic jets. If its at the right price! What does everybody else think? Is it time to think supersonic once more?

RE: New Stt

Wed Apr 07, 1999 11:31 pm

I'm all for the SST project(s). The Concorde is famous with people who don't even have a special intrest for commercial aviation. And new technology could make an SST faster and cheaper and more economical. It could be the new way to travel. The only thing is that I would hate to see all the standard planes go that we love (717-777, A300-A340/XX, L1011). Maybe a supersonic 747? :)

Jack M, Birmingham, Michigan
Posts: 29881
Joined: Wed Jul 07, 1999 11:27 am

RE: New Stt

Thu Apr 08, 1999 1:38 am

I think that you probably will see a supersonic biz-jet before you see another SST airliner. It actually wouldn't take much. I understand that Cessna got the Citation X prototype up to Mach .98 during flight testing. My limited understanding of supersonic flight is that the drag curve flattens out once you get above mach 1.0-1.2. The interesting thing about a smaller bizjet is that you shouldn't need to have any afterburners or reheat section on the engine to get those M1.2-1.5 speeds. The F-22 dosen't need it, so why have it on a Biz-jet?? You will lower your maintaince costs and save fuel.

So here is my idea.

An 8-10 Pax twin engined cranked delta winged bizjet powered by the same engines that are on the Citation X. Roughly would be this size of the Lear 31. I don't know what the range would actually be, but unless more fuel tankage space could be found probably not trans-atlantic. That is the really limiting fact with these supersonic designs. The easier it would be to build but the more limited the plane is. Still it would be a neat prototype.
Posts: 85
Joined: Sun Jul 04, 1999 2:39 pm

RE: New Stt

Thu Apr 08, 1999 4:02 am

dassault is making just such a biz jet with three engines and looks almost ecaxtly like a shrunken Concorde
Posts: 955
Joined: Tue May 18, 1999 2:59 am

RE: New Stt

Thu Apr 08, 1999 3:15 pm

From what I heard Dassault was working on the SST biz-jet for a couple years. I say "Was" because I read a couple weeks ago in AW&ST that they had suspended the program. They had a bunch of reasons; powerplant issues, lack of risk-sharing partners, it would be expensive, and there didn't seem to be an outrageous demand. Too bad - they definitely have the experience to build a plane like that.

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