https://www.reuters.com/article/us-boom-japan-airlines/japan-airlines-invests-10-million-in-supersonic-jet-company-boom-idUSKBN1DZ1N2 Image Unavailable, Please Login Pretty edgy name they chose there.......
https://en.wikipedia.org/wiki/Concorde Much smaller? Says the concord-with seating for 92 to 128 passengers? Also, can you believe that this was 1960s technology and we have not had anything like it since? You'd think if it was possible there would be 2500 knot travel by now. My god, that's 50 years ago.
Most of the work done on supersonic airliners has shown you needed an aircraft much larger than the Concorde to make economic sense. Hard to see how you could make money with 55 seats on a 4 engine supersonic airliner. Distance from JFK to Heathrow is about 3000 nautical miles. That works out to an average of about Mach 1.65, faster because of time lost climbing out and descending. The F-22 can supercruise in military power, so developing engines that can cruise at Mach 1.7-1.8 without afterburner is possible. Unfortunately, that is not a very efficient Mach range for flight. High aero efficiency Machs are subsonic below Mach 0.92 and again at about Mach 3.0.
So is the SR-71 Blackbird... 60's technology. And it's STILL the fastest. Agree, you'd think there would have been big improvements.
Just looked at the official site... it's a tri-jet; the center engine has 2 intakes. The engines will not have afterburners at all, it sounds like from the verbage. They cannot use military engines (they will sell to foreign countries/airlines)... they describe what mods need to be done to an existing low-bypass engine... They will have to stop for fuel crossing the Pacific, but that stop is calculated in the E.T.
I wonder how much backing they really have? Was this the second supersonic jet company out of Centennial? Javelin? I really wish them the best of luck.
Don't know of another. The Javelin was not supersonic. Intended as an inexpensive 2-seat jet trainer.
There is an Electric airplane being developed there... Sun Flyer, maybe? Not even close to supersonic, though.
Their going to need a lot more money than that to get off the ground... Best of luck to them, but I see the future of transportation focusing on customer experience (including reliability) and not turnaround times.
10 Million Dollar investment where one single aircraft is 200 Million Dollars? Not exactly jumping into the waters with both feet. More like a toe dip! Well, maybe JAL gets their logo on the prototype. Is that worth 10 Mil?
Well, of course they could do it in a dive. In fact, a sonic boom I heard in a classroom in P.R. back in the '60s was probably just that, a Sabre in a dive.
At ~Mach 3, an aircraft gets to where it is riding on its own shock wave like a surfer. Below that, you are dragging it along with you. Below 0.92, not much shock wave, except possibly on some surfaces. Transonic from ~Mach 0.92-1.05, all kinds of strange things happen to airflow as it attaches and detaches from the airframe, noted by instruments jumping all over the place. Aircraft dropping bombs in that regime actually have software to throw out CADC inputs and rely on inertial data.
One of the big advantages of the F-86 over the MIG-15 was its controllability during high speed and transonic flight. The MIG's controls tended to stiffen up at those speeds while the Sabre was still easily controlled. The MIG had a higher ceiling from its lighter wing loading, but was generally not as easy to fly in combat maneuvering. F-86s going supersonic in a dive is easily believable, since it was mainly a T/W issue on level supersonic flight (unless you screwed up the aero like the XF-92). The instruments actually start dancing around on supersonic aircraft at around Mach 0.92 (seen it dozens of times), when parts of the aircraft are seeing supersonic flow, but the booms generally only happen when the entire airframe is supersonic.
On Friday, Dec. 15 Lockheed Martin announced a Memorandum of Understanding with fellow leader in supersonic technology, Aerion, to define a formal and gated process to explore the feasibility of developing the world’s first supersonic business jet, the Aerion AS2. Image Unavailable, Please Login
People in England loved seeing the Concorde roar overhead - I lived in the flight path and it would often induce choruses of Rule Britannia amongst those outside at the time. Banning aircraft such as these on the basis of sound was such a dumb decision. In contrast, here in Huntsville, the windows of the house are rattled (not an exaggeration) multiple times a week by weapons testing at Redstone Arsenal. Until I got used to it, it was quite alarming. Occasionally, we get supersonic booms from military aircraft but we're so used to the ordinance explosions that we don't really notice them unless we see the actual plane streaking across the sky. Seriously, people wouldn't care one iota about supersonic booms from passenger planes. No need for new quiet technology, just fly the planes. All the best, Andrew.
