Blackstone
Brigadier
Can we get back to PLAN aircraft carrier programs?!
PLAN Aircraft Carrier programme...(Closed)
- Thread starter bd popeye
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Can we get back to PLAN aircraft carrier programs?!
Intrepid
Major
I think, you can not compare an aircraft with vectored nosles with a conventional aircraft. And you need to compare two parameters: not only thrust to weight ratio but also the wing load.
J-15 seems to be a very easy to fly ski jump aircraft. Very large, but that is the reasonable compromise for the first years testing and learning.
By the way - Liaoninmg should sail again.
Engineer
Major
One potential problem with navalized J-10 on STOBAR carrier could be its delta wing configuration . Delta wing is optimized for higher speeds and such aircraft usually have higher stall speed. STOBAR fighters (Su-33,J-15,Mig-29K ) require very low stall speed to be able to take off without catapults , just with ski-jump ramp .
Diagrams below :
The J-10 is a canard-delta configuration, which is notably different than a pure delta configuration. A canard-delta can generate up to 150% the lift of an non-canard aircraft having the same wing size. So, stall speed wouldn't be an issue, even though I don't think J-10 will ever be navalized.
Tags: China; canard-delta configuration; configurations; lift comparison; traditional configuration;
Intrepid
Major
Visibility could be an issue, especialy with a high pitch. Some USN-aircraft were reported as bad in handling and others had special devices to lower the pitch (of the hull) like the F-8 Crusader.
thunderchief
Senior Member
Well , it doesn't go like that exactly
You need good T/W to accelerate . If you have two aircraft with same T/W they would have approximately same speed at the exit of the ramp (if we exclude influence of drag , friction , etc ... ) But one of the aircraft may have higher stall speed then other , and higher stall speed then speed achieved at the end of ski-jump . In that case it may plop in the water , while the other aircraft would take off . Correct me if I'm wrong , but as far I know J-10 does not use canards to create lift and to carry weight of the aircraft in normal flight . Instead they are mainly used for control and for stability (like other similar fighters Gripen , Rafale etc ... ) In other words , they do the function of the tail in conventional aircraft , and will not decrease stall speed but they will increase maneuverability at higher AoA .
Looking at the video of J-10 taking off , I would say it needs first to build up speed , and when it does it maneuvers superbly (canards deflected only at the moment of taking off ) .
[video=youtube;zeuON3eGA0o]http://www.youtube.com/watch?v=zeuON3eGA0o[/video]
Engineer
Major
When you mention canard being used for control and stability, you are referring to control-canard. Nevertheless, the canard can still contribute to lift by creating a set of vortices that pass over the wing. The amount of lift increase depends on the strength of that vortex. While one of those factors that affects vortex strength is AoA, the increase in maneuverability is really due to increase in lift. During lift-off and approach, the aircraft would see not as high AoA, but there would still be some lift increase to lower the stall speed.
Here is a picture of J-10 doing approach. The canard is deflected upward, suggesting that it does carry a portion of the weight of the aircraft. Lift generation at the canard also means a vortex is formed, which in turn increases the lift at the wing. These are two additional sources of lift, compare to a pure delta which has none.
The canard on the J-10 also deflects upward during cruise, but only for 1°~2°. The canard is used all the time, not just at the moment of take-off.
Engineer
Major
If I remember correctly, the canard pretty much overlaps with the main wing from the point-of-view of the pilot. Regardless, the canard is not positioned directly to the sides of the pilot, so visibility during approach and landing is a non-issue.
asif iqbal
Lieutenant General
Now that is something, very exciting news, wars last more than 24 hours so night flying is a must, and it also happens to be the toughest and hardest part of carrier air opps
With CV-16 so many days out at sea. I doubt they never carry out a single night landing/ take off test.
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