Brumby
Major
Based on some recent announcements by the Australian government concerning shipbuilding including
it does look like the future submarine work will primarily be done in Australia. If the Soryu type submarine is chosen, Japan in my view will likely project manage it besides providing the technical input.
Zool
Junior Member
Update on , ATD-X:
Mitsubishi Heavy to delay delivery of fighter prototype
KYODO
Mitsubishi Heavy Industries Ltd. is unlikely to meet the March deadline for delivery of the first test version of a Japan-made stealth fighter to the Defense Ministry, government sources said Tuesday.
Mitsubishi Heavy to delay delivery of fighter prototype
KYODO
Mitsubishi Heavy Industries Ltd. is unlikely to meet the March deadline for delivery of the first test version of a Japan-made stealth fighter to the Defense Ministry, government sources said Tuesday.
Skywatcher
Captain
Best case is that the ATD-X flies by mid 2015, though that could be really optimistic if they do have engine issues after all.
SamuraiBlue
Captain
It's not a hardware problem, they found a problem in the software where the system was not able to properly identify the position of the power level in the cockpit. They are also adding a new feature in which the engine can restart in midair after it had stalled.
b787
Captain
The power levers likely have to be pulled back to a start position, for a relight, in order to have a combustible mixture, you would normally pick an optimal speed with the running engine and mover the ignition back to start, and the fuel levers to start as well. In the event of a double flame-out, you would place both power levers in the airstart position and put the nose down until you reached the optimum airspeed, and move the fuel controllers and ignition to airstart. If you lose an engine at altitude, or both, the likelihood is that you will have two supercooled engines that will resist reignition until you get low enough to have a combustible mixture. I'm sure my sequence is off, but the lower altitude and optimum airspeed are very important, once you reestablish an optimum rpm through the compressor section, you engage the start sequence for a relight, they most always do,,,,,,, I said they most always do ooooooooowoowwwwwwwwwweeeeeeeeeeeeeesswwsshoohhoohshrrhhhhhhraarraaarrrrgggghhhbbbbummmmmphhhohhshoooooooweeeeeeshhhhhhhhhhhh! yeah we're good
That prototype has rudders that look to be spaced a little to close together horizontally, not real sure about the L/O shaping. The verts and rudders do appear to have a similar spacing to the F-15, and as you all recall no doubt the wider spaced angled vert/rudders of the F-18, F-22, and F-35 have all experienced some negative affect buffeting, likely from being very close to turbulent airflow off the leading edge, so maybe narrow, vertically aligned verts may be the way to go. The proposed canted verts of the Silent Eagle were dropped????
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I'm guessing / hoping that for advanced jets like that there's shortcuts compared to a full restart procedure. On a T-38 / F-5 type after a flameout you could just go max power on the respectve engine, as that would light the igniters in the combustion chamber and provide some fuel flow. Right after flameout, there should also be enough RPM left.
On bigger jets there is / shuld be a clutch that closes, thereby connecting the shafts of the respective engines. Now the good one spools the dead one for proper RPM for a relight. There will be an igniter button somewhere, but I doubt any jet will have a fuel lever besides the throttles, like piston engines do. Especially with modern FADEC systems, everything will be computer controlled. With the throttles you just give a demand input to the system.
I also think canted verts are the estsablished norm for anything trying to be LO. There's gonna be trade offs, the japanese will figure it out during testing.
On bigger jets there is / shuld be a clutch that closes, thereby connecting the shafts of the respective engines. Now the good one spools the dead one for proper RPM for a relight. There will be an igniter button somewhere, but I doubt any jet will have a fuel lever besides the throttles, like piston engines do. Especially with modern FADEC systems, everything will be computer controlled. With the throttles you just give a demand input to the system.
I also think canted verts are the estsablished norm for anything trying to be LO. There's gonna be trade offs, the japanese will figure it out during testing.