JH-7/JH-7A/JH-7B Thread

Re: JH-7/JH-7A Thread

adeptitus said:

As far as I know, they only produced 1 JH-7 and 3 JH-7A regiments, with 18-20 aircraft per regiment. So that adds up to maybe 80 planes?

The JL-10/A radar is being improved. While it's not as advanced as the latest western radars, the JH-7 is not exactly a front-line fighter anyway. What's important is its capability to deliver bombs on target, not intercepting enemy fighters.

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PLANAF 6th Division 1st Regiment - Original JH-7 (probable up to 20 planes); possibility of midlife update to use JL-10A radar.

6th Division 2nd Regiment - JH-7 built with with JL-10A radar. (probable up to 24 planes)

9th Division 3rd Regiment - first regiment with JH-7A (probable up to 24 planes)

5th Division 2nd Regiment - JH-7A (probable up to 24 planes)

PLAAF 28th Division 1st Regiment - JH-7A (probable up to 20 planes)

Re: JH-7/JH-7A Thread

its mean they will keep produce than buy MKK series. Is there any reason why they more choose JH-7/A tan MKK?thx

Re: JH-7/JH-7A Thread

simonov said:

its mean they will keep produce than buy MKK series. Is there any reason why they more choose JH-7/A tan MKK?thx

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JH-7A is their own product, it supports local industry and research. And for the given mission, JH-7A is rather well suited I think.
Give it a good radar, perhaps modern avonics, integrate new weapons, and it can do quiet a good job.

Re: JH-7/JH-7A Thread

Also China J-11 project is running fairly well, with their domestic version comparable to existing MKK, and assuming that J-11BS is what I assume it is going to be then it will be comparable with MKK2/3. Only reason why I think PLA is reluctant to further purchase and MKK even the MKK3, cause of success they are having with the domestic J-11 project. Also further achieving domestic status in aviation sector.

Re: JH-7/JH-7A Thread

Chengdu J-10 said:

Also China J-11 project is running fairly well, with their domestic version comparable to existing MKK, and assuming that J-11BS is what I assume it is going to be then it will be comparable with MKK2/3. Only reason why I think PLA is reluctant to further purchase and MKK even the MKK3, cause of success they are having with the domestic J-11 project. Also further achieving domestic status in aviation sector.

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If J-11BS can only reach MK3 level, I will be really worried about the state of Chinese aviation. There should only be one goal, that is to reach the level of su-34 and the latest F-15E variants.

Re: JH-7/JH-7A Thread

I just wanna know how the SAR mode in radar works? thx

Re: JH-7/JH-7A Thread

There's wiki to tell you how SAR works, article is pretty okay. In case you're too lazy for that - here's the lowdown. Radar needs to work with very tight beam, relatively high pulse frequency mode to achieve greater resolution, which also, relatively speaking, lowers its effective range. Still, the limitation is in size of the radar array, as larger arrays give better resolution. So, one way to circumvent that is to observe the redar return over a period of itme. Radar continuously emits at the target and the computer, over time, gathers the data to create an image which would be similar to one gotten by a larger array radar. Only here it is created by simulating the size of array with radiation from different angles over a period of time - which gives in a way a synthetic array - and a synthetic image of the target. Depending on the movement of the target over a period of time, movement of the radar itself, that image can be more or less detailed, can be more or less 3D. SAR is therefore very good for identification of possible targets.

Re: JH-7/JH-7A Thread

crobato said:

PLANAF 6th Division 1st Regiment - Original JH-7 (probable up to 20 planes); possibility of midlife update to use JL-10A radar.

6th Division 2nd Regiment - JH-7 built with with JL-10A radar. (probable up to 24 planes)

9th Division 3rd Regiment - first regiment with JH-7A (probable up to 24 planes)

5th Division 2nd Regiment - JH-7A (probable up to 24 planes)

PLAAF 28th Division 1st Regiment - JH-7A (probable up to 20 planes)

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There is also talk that the PLAAF 5th Division (not to be confused with the PLANAF 5th Division which also have JH-7As) are in the process of being transitioned to the JH-7A.

Re: JH-7/JH-7A Thread

SAR is basically used only for identification work. Detection work is through MTI or Moving Target Indicator. That works a lot easier, but it requires a monopulse antenna. Basically with MTI, the radar returns of a moving object is going to manifest by comparison against the radar returns of a non-moving background. What you need is a monopulse or 3D antenna, where from a single pulse is emitted by two to four emitters (four is standard) in different locations of the antenna and the returns received in the similarly different locations. So you have in one pulse, 3D information.

This should be fairly easy with current Chinese aircraft right now, given that planar monopulse arrays are standard. In fact, MTI is a listed feature on China's first operational slotted array fighter radar, the KLJ-1, and anyone else coming after that should have at least the same.

Re: JH-7/JH-7A Thread

crobato said:

There is also talk that the PLAAF 5th Division (not to be confused with the PLANAF 5th Division which also have JH-7As) are in the process of being transitioned to the JH-7A.

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yep, that's the second one I was referring to. It's kind of interesting since they are both in the shandong area I think. plaaf one is either the 13th or 14th regiment.