J-15 carrier-borne fighter thread

[Quickie]

Exactly, the AL-31 has plenty of power for the J-15, and when you are staying local and shooting touch and goes off the boat for carrier quals, no need to light the burner as you are already at flying speed, and you willing be staying in the pattern at low altitude, with a visual on the boat.

It might as well be the case as you described, but if the touch-and-go was also part of the training of an aborted landing maneuver, the J-15 speed on contact with the carrier could well be at, or near the trapping speed, to simulate as near as possible to an actual attempted landing. And then to continue simulating with an aborted landing, the J-15 would still need to increase engine power to accelerate to takeoff speed from the touch down speed.

So, the bigger the difference between the touchdown speed and the takeoff speed, the greater is the challenge to bring the aircraft to takeoff speed, and this depends much on the engine power and its spool up time as well.

 

[Jeff Head]

Interesting:

DELETED DUPLICATE

 

[Air Force Brat]

It might as well be the case as you described, but if the touch-and-go was also part of the training of an aborted landing maneuver, the J-15 speed on contact with the carrier could well be at, or near the trapping speed, to simulate as near as possible to an actual attempted landing. And then to continue simulating with an aborted landing, the J-15 would still need to increase engine power to accelerate to takeoff speed from the touch down speed.

So, the bigger the difference between the touchdown speed and the takeoff speed, the greater is the challenge to bring the aircraft to takeoff speed, and this depends much on the engine power and its spool up time as well.

Exactly so, and you throttle up just as if you were "trapping" when doing a "touch and go". My point being that the AL-31 offers more than sufficient thrust dry, and does not need to be in full burner for a go around. It does need burner to "fling" it off the ramp and into the air from a standing start on take-off, but not to trap or go around, depending of course on aircraft weight.

Depending on how quickly the AL-31 does throttle up, the levers may already be full forward in METO as they cross the fan-tail??? Its all a matter of timing, and you do it the same on "every" approach? whether to trap, or to go around, even though the speed is low, and the aircraft is in a high rate of sink coming aboard, its no big deal to recover to flying speed because of the excess available thrust of the AL-31, and the fact that they are probably around 140 knts coming across the fantail.

 

[Jeff Head]

Interesting:

Just found out there are actually at least ten aircraft on board. According to video analysis done by a poster on CJDBY, the CNTV video shows 8 unique aircraft: 100、103、104、106、107、108、109、113, and then the People's Daily Weibo picture reporting the same news showed 114 and 105, for a total of 10 aircraft.

Such analysis, where they show clips of the various aircraft taking off and landing, and even some in the hanger (I saw three) des not mean at all that they were all onboard at the same time.

Typically with these types of evaluations, tests, and training, they will have the whole group working together.

I have looked at as many videos as I can find and the most I have seen on deck at once is six.

And that's a good thing. As I have said, they have made god steady progress all year from three to four, then five, and now six.

Of course there could be more in the hanger.

But as I say, when they are training up and doing tests and exercises like this, they will typically be landing, taking off and being spotted together because that is how they will operate in real life. deployments.

If someone can show me stills or videos showing more than six...I would love to see them.

 

[Intrepid]

So, the bigger the difference between the touchdown speed and the takeoff speed, the greater is the challenge to bring the aircraft to takeoff speed, and this depends much on the engine power and its spool up time as well.

Touch down speed may be even higher than take-off speed at the same weight.

 

[Quickie]

Touch down speed may be even higher than take-off speed at the same weight.

Okay. The aircraft may actually slows down from the touchdown because of drag and friction on the carrier deck and drag caused by the aircraft being at a higher angle-of-attack for take off in an aborted landing. The point is still to maintain the touchdown speed at a high enough level just so that the momentum is at a high enough level to be able to take off again (e.g., because of missed traps) with the available amount of engine power plus a reasonable amount to spare.

 

[Deino]

Nice ....

 

[Air Force Brat]

Touch down speed may be even higher than take-off speed at the same weight.

Right, and I would suggest that all carrier birds likely have an Angle of Attack indicator, which is actually probably more accurate than using the ASI?? however when the US Navy talks about bringing the F-35C aboard ship, they are talking about 145knts being an upper limit. So assuming the Chinese Pilots are bringing the J-15s aboard at a similar speed, in a touch and go, they roll along the deck for a few hundred feet, the throttle is up to 100%, so the bird is beginning to accelerate very shortly after the mains touch down, the nose wheel may not even make contact with the deck depending on timing, etc, etc.

My point is the J-15 has an excess of thrust for such operations even with-out having to push into "full burner".

 

[asif iqbal]

I remember when the J15 first appeared there was people saying oh but we can't see the wing folded it's not a naval fighter just another flanker advertised

Then when it was seen on the carrier they were like oh but the wings are not folded so are they using standard flankers on the carrier

Sorry but that really nice picture of the J15 with folded wings reminded me of the time when that happened

Now where are we? Liaoning air wing is getting up to speed we have seen carrier formation sailing and 001A confirmed

How far the time has brought the Chinese navy in such a short time

I wish them well

 

[weig2000]

I remember when the J15 first appeared there was people saying oh but we can't see the wing folded it's not a naval fighter just another flanker advertised

Then when it was seen on the carrier they were like oh but the wings are not folded so are they using standard flankers on the carrier

Sorry but that really nice picture of the J15 with folded wings reminded me of the time when that happened

Now where are we? Liaoning air wing is getting up to speed we have seen carrier formation sailing and 001A confirmed

How far the time has brought the Chinese navy in such a short time

I wish them well

Time was, when Kanwa & Pinkov were saying that China was having difficulty in manufacturing arresting wires and had to search the world - from Brazil to Ukraine - to buy / trade / copy / steal the technology. Only a few months ago, some Indian analyst wrote in National Interest that China could not produce the same kind of steel as some mysterious "India Indigenous Alloy" needed for her domestic carriers construction. The world has not been very kind to China's carrier program.