Hate to burst your bubble, SST non-sayers. But there are currently TWO, yes TWO SSTs in development.
Of course most of you know about the TU-244. IF they are able to increase the TU-244s range to about 6,500nm, THEN we WILL see trans-Pacific flights from Russia, Japan, China, etc, to the U.S. west coast, on routes that DO NOT pass over island nations. IF they DO NOT increase the range, you will see this SST stopping in Honolulu half way. IF they can put BOTH Cat. 4 turbofans AND Trubojets on the aircraft, that will solve the problem of subsonic noise regs.
If they put like four turbojets, and two turbofans on it, PROBLEM SOLVED. Switch off the turbojets on takeoff, and use turbofans on takeoff. Turn the tubojets on at high altitude over ocean. However, the turbofans used at takoff will need to be very powerful, since they will be carrying dead weight from four inactive turbojets. I'd suggest a possible Trent 600, if they make one. There, no "compound" engine required.
This is the formula that LOCKHEED MARTIN INC.
is using for the development of THEIR AMERICAN SST COMPETITOR! You might check their site. I read about this project 6 months ago in AIR & SPACE magazine! the aircraft is supposed to have 6, yes SIX engines, four turbojets/ramjet, two high-powered tubofans that have yet to be created. It's a great concept. the aircraft will have a "clean wing". There will be sort of an airfoil platform that will support the engines, all six in one place. I believe that the platfor is attached to the vertical stablilizer, kinda like an MD-80s engines are slightly below. It's been a while, I'm trying to decribe the drawing as best I can.
It holds between 250 and 300 passengers, and houses 5 gear units. (the same as a 747).
Lockheed is looking for international interest in the project, both from airlines and the Airbus Consortium.
Now, let me tell you WHY this would be successful, if they get the funds to do such a project. FIRST mass-production will lower the costs of buying the aircraft, and essentially lower seat-mile costs for pax. SECOND, the aircraft will carry nearly the SAME AMOUNT of pax normally found on an A340-300 or 777. THIRD, the aircraft will be able to make a flight from Los Angeles to Tokyo in 4 hours. Consider that most 777s take about 16 hours to make that flight.
Airlines can send 300 pax at a time overseas in 4 hours, return full in 4 hours, and send another plane out in 4 hours, and return in another four hours. WHAT AM I SAYING? If you give each stop a 1-hour layover time, in about 20 hours, airlines can transport 1,200 passengers, suing one plane! In 15 hours, they can transport 900 passengers! In effect, if they buy a 777 for LAX-Tokyo, they transport about 300-500 pax a day. If they buy JUST ONE Lockheed SST, they can transport THREE OR FOUR TIMES THAT AMOUNT IN THE SAME AMOUNT OF TIME!
Now before people bite my head off and tell me it'll never work, really look at it. Tell me, why are airlines dumping their A340s for 777s? Because the 777 is faster, giving them more pax to carry in the same amount of time. Same concept with Lockheed's SST.
THE ONLY things I see standing as obstacles here is that-
1. They need funding
2. This SST will be limited to over-water-only routes, which means North Pacific and North Atlantic.
HOWEVER, with the advent of two tubofans, the aircraft and fly subsonic over land, and once clear, fly supersonic, making a flight from New York to Sydney possible. Fly subsonic over the U.S., fly super over the Pacific, switch to subsonic over Hawaii and the South Pacific Nations, and fly super for a little while, and arrive in Sydney flying subsonic. Works for me and the airlines!
Any objections to the project?
Fly to new horizons