New photos from the 29th:
J-20... The New Generation Fighter III
- Thread starter siegecrossbow
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Hehe, I was directed to those translation pages, too, only to realize that I had missed so much on this board! I did have read most of the content in Chinese though. But reading them in English is very refreshing.
---------- Post added at 11:37 AM ---------- Previous post was at 11:34 AM ----------
Now, is this a new pic or that well-known one many months ago? It looks like a reversed one of the old one, only with the peeling of the paint on the opposite side.
As did I, very well written and thanks for the translation guys.
---------- Post added at 11:14 AM ---------- Previous post was at 11:02 AM ----------
Anyway, I think what you are trying to get at is that J-20 has higher inertia than a shorter aircraft. This may be the case, but you must also realize that the moment arm for each flight control is also longer. This means the flight controls exert more torque on the aircraft, increasing speed of the response. So, the disadvantage of a higher inertia and the advantage of longer moment arms cancel out one another, meaning the aircraft being longer is a non-issue as far as maneuverability is concerned.[/QUOTE]
Yes sir, that is exactly my point about mass centralization, the Raphael is very short coupled and naturally unstable, the T-50 in the middle, and the J-20 a little longer, Dr Song made the point about a true fifth gen having to be a heavy fighter, I highly admire the aerodynamic fixs to make J-20 agile, but from a pilots point of view, I don't like the Raphael, I like manueverable, but I also like something that stays where its put trimwise. This is from a private pilots perspectice IMHO? I had a difficult time as you know figuring this canard thing out.LOL My statement is from a personal perspective, the Raphael is an amazingly manueverable aircraft and a great fighter, but I personally don't want something inately twitchy, I want something that tends to be more planted or stable that is also manueverable, thats one reason I like the J-20, you have to get there to perform the mission, and you hope to come home as well!
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I'm quite sure that's an old picture.
The pilot is given artificial feel. It's the flight control system that senses what is necessary to let the aircraft fly as the pilot directs and acts accordingly. But to the pilot it feels like a stable aircraft.
MiG-29
Banned Idiot
There is no perfect jet, to illustrate based upon the swiss report where Gripen was selected, the three Eurocanard fighters were compared, Typhoon, Rafale and Gripen, these three jets are tested and the conclusion shows how canards and engines affect performance, Typhoon has a long coupled canard, the Eurofighter has an advantage over the Rafale of around 0.1 Mach, more or less 100-120km/h in supercruise flight under the same requirements,;however as dogfighter, Rafale is superb, British reports say it is marginally better than Typhoon thanks to Rafale`s close coupled canards.
Long coupled canard generate less drag at cruise flight but also less lift at high AoA, this is known in the west very well.
Close coupled canards are the opposite, they generate better lift at high AoA but impose a higher penalty in induced drag at cruise flight, thus Eurofighter has long coupled canards.
(if you notice long coupled canards were used on XB-70, a mach 3 supersonic fighter due to lower drag)
J-20 main advantage is it carries no weapons externally, this is very important, because while any fourth generation does carry weapons externally, the J-20 does not, this means, less drag, as such better lift and better turn rates and range.
Here is why it is important, J-20 has long coupled canards, which allow for less drag at supercruise flight, and by carrying no weapons externally J-20 will generate less drag, so this means it potentially can have equal or maybe better turn and roll rate than a fighter with close coupled canards that carries its weapons externally, while retaining good supersonic lift drag ratio for supercruise flight.
Closed coupled canards are a waste if you have external weapons because the drag imposed by the externally mounted weapons or fuel tanks simply kill their aerodynamic advantage at high AoA over long coupled canards.
J-20 also has LERXs which also serve as vortex generators.
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Engineer
Major
That's the role of FBW, it makes the aircraft feels stable even when the aircraft isn't. The pilot can essentially let go of the stick and the computer will fly the plane straight and level.
Hehe, you are still living in the memory of the pre-FBW times and just reluctantly dragging your feet into the FBW era, where you wouldn't feel a thing flying a highly unstable fighter aircraft.
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