photoshopped? It's there both in the video above for Feb 26 test and the images posted by siege for Feb 27 test.the "spike" on the nose disappear
J-20... The New Generation Fighter III
- Thread starter siegecrossbow
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Deino, if you note the pics that siege just posted, the canards are angled down at less of an angle as the aircraft pulls through the vertical, to the inverted, where he apparently initiates a recovery, by applying forward stick and rolling out of the manuever. Note the large, now positive angle, same orientation to the aircraft, but now pitching the nose up to prevent the nose from falling through the horizon, as he rolls out to recover. The flight control system here is obviously well calibrated to permit this type of horsing the aircraft around, and to those who doubted her ability A2A, yes I was one of those, she is proving her metal. I hope someone posts the video if we have one, but these pictures are priceless frame by frame, you can see the control deflection as the nose falls through the vertical back to the horizontal. These manuevers show just how much confidence they have in this flight control sytem. It is interesting because todays Air Force Magazine, daily report has a note about an F-15 involved in ACM with another aircraft, departing controlled flight and entering an inverted flat spin, the aircraft fails to respond to all efforts at recovery so the pilot lowers the gear, stopping the spin, but when he adds power to recover, the aircraft departs again, and enters another spin, whereby he ejects at 1800 ft. The point of bringing this up is the F-15 is a beautifull airplane, a pilots airplane with no bad habits, the last of the old school fighter aircraft with lots of wing and power to get you out of those bad situations. You have to work to get yourself in trouble, and normally a little throttle or right rudder and your back in business, I watched a discovery channel special? I think and an f-18 pilot got himself in the same type of trouble, he took his hand off the stick and braced them on the canopy frame and the flight control system recovered the aircraft. The F-15 pilot ejected, and lost his aircraft, the shuck up F-18 recovers his aircraft and returns to business. These systems make being a fighter pilots life a lot more pleasant, encourage safety, and allow him to fight the airplane to the limits of his ability and the limits of the airframe with much more confidence.
Rapid flicks are full slew rate test -- measuring how fast it can move. These test need to cover all the components -- backups included. So you see a surface move multiple times. At minimum, you would need test full range of motion (nothing was stuck), slew rate (flight control expects things to be done at certain time), operation under load (no leaks).
Thanks nemo, that answers a lot of my questions, these are amazing flight control systems, just unbelieveable to an old head like myself?
Flight control system are actually not that complicated, as software goes -- chances are the consumer electronics you use are more complicated than that. Coming up with the requirement (specification), however, is an art from, and testing the system is painfully tedious.
French and Chinese are probably the most aggressive on flight control and aerodynamics because their engine technology isn't up to snuff. Americans and British can afford to use excess engine power to simplify aerodynamics and flight control. Russians uses black magic --they have techs that no one else have and can make use of components that are unusable by everyone else.
Maggern
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And to think at some point people still doubted this baby even -had- weapon bays...
Yes I believe it, when i bought my first $30 dollar air hogs heli, it would go up and down and was difficult to control, I bought a 35 dollar job the other day, it has a winch, that raises and lowers, but better than that, with a little practice and luck it will go where you want it within reason. wow It is fairly obvious that the J-20 has some fairly outstanding flight controls, as i am sure the T-50 does as well, it amazes me how simular our airframes are, and how being designed for a specific purpose, we end with a simular piece of equipment. The idea of simplification likely comes from the very stringent safety standards, sometimes those may be a real impediment to creativity, but I am amazed taking the shuttle launches for instance, how few we lost, especially using the hydrogen fuel. I can't do the math, but I do have a fascination, extremely archaic to visualize air flow, good aerodynamics do require a clear vision fluid dynamics, but I have been amazed and will be again!
More photos from yesterday. No video:
No videos? Did all the cameras in Chengdu break that day or something? *gets impatient*
Hehe... If you go to CD (the Chinese one, not ChinaDefense), people were moaning yesterday already: "I've waited two days. When will the videos of 27th come out?? Could some big shrimps release the videos PLEASE?!"
Hey did you get my tailslide video, I pm'd to you this evening? I think they're just playing with us, though I would like to see the photo sequence video. I think the tall man is getting closer to giving us this airshow, this jet jockey looks like a Chinese Tom Cruise, and he's definetly getting a little more aggressive with his ride, these pics almost look like an immelmann. Well I'm off to the rack myself, night all.
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