The Q-5, J-7, J-8 and older PLAAF aircraft

Semi-Lobster

Semi-Lobster

Junior Member
crobato said:
Its not a technology issue. Its just that by now the J-8B airframes are getting old. If you upgrade the J-8Bs, you're putting money on an airframe with already limited flight hour life. Its a waste of money. You should just retire the old airframe and build new fighters.
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Well the J-8D's redesigned, heavier airframe I assume would be a factor in having a longer flight hour life compared to the not much older J-8Bs.

Another question (sorry! :D) The Type 208 of the J-8B and J-8D you said earlier they were theoretically capable of accepting the PL-11 missile, but I'm reading some really mixed reports about its range. Some are saying 35km, some are saying 40km and some are saying 70kms, is this just different 'generations' of the same radar or something ele?
 
crobato

crobato

Colonel
VIP Professional
The size of the radar can mean it can reach 70km. The one on the J-8D is the "fixed" version of the Type 208, while the J-8B had the original flawed version. From there it becomes a matter of going back to the J-8B and fix its radar, plus the conversion also added an IFR tube inside the airplane so you can put a probe on it. A few other things from the J-8D like the navigation and RWRs are added to the J-8B too, to bring them to the same operating standard.
 
Semi-Lobster

Semi-Lobster

Junior Member
crobato said:
The J-5 was the first jet fighter China actually started to produce. That would be the MiG-17. Prior to that, MiG-15s had all been imported, but none domestically produced.

The first jet fighter ever imported to China and wore the PLAAF insignia was the MiG-9. That was based on a secret project Messerschmitt concocted in the closing days of World War II. A few of these aircraft are still in some museums in China.
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So the MiG-17 was the first Chinese built jet fighter and before that the designation of imported Soviet aircraft was not changed? Also wasn't the Yakovlev Yak-17 also imported as well to China?

I'm still trying to figure out what this jet trainer is based on. It seems to be a specificly purpose built jet trainer which is certainly something the Soviet Union never did. From what I've read, it was a completely indigenously designed aircraft amazingly enough but it seems beyond one built it never really entered service it seems.
 
Semi-Lobster

Semi-Lobster

Junior Member
crobato said:
The size of the radar can mean it can reach 70km. The one on the J-8D is the "fixed" version of the Type 208, while the J-8B had the original flawed version. From there it becomes a matter of going back to the J-8B and fix its radar, plus the conversion also added an IFR tube inside the airplane so you can put a probe on it. A few other things from the J-8D like the navigation and RWRs are added to the J-8B too, to bring them to the same operating standard.
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What exactly would make the same radar fluctuate so differently in range? Also I think I read that early J-8Bs had a different radar than later J-8Bs (Type 208A and Type 208B I believe). Both obviously have now been brought to J-8D standards.
 
crobato

crobato

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The components inside the radar have a deep bearing on the range and quality, not the physical appearance of the radar's antenna.

From what I remember,

J-8I -> Type 204 aka SR-4
J-8B -> Type 208, later 208A, 208B

J-8I changed the radar to JL-7AG to make the J-8E, not sure what the exact radar designation is, but its based on the radar used on the J-7E.

J-7E -> JL-7A which is based from
J-7C -> JL-7
J-7D -> JL-7G?
 
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C

challenge

Banned Idiot
singapore AF F-15 will be fitted with AESA,other countries such as japan,south korea and possible TW may opt for AESA upgrade.
upgraded F-8-2 fitted with conventional mechanical radar will be suicidal for the pilot when confronting AESA equip fighter,.seond the aircraft itself is base on old design,further upgrade for the aircraft will be consider waste of resources.
 
crobato

crobato

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The SAC jet seems completely indigenous and yet I never heard of it until now. I guess they don't show a lot of stuff until now. That certainly makes it the first Chinese indigenous jet. Originally I thought SAC's J-12 of 1966 was the first indigenous Chinese jet. Now make that the first supersonic jet.
 
Semi-Lobster

Semi-Lobster

Junior Member
challenge said:
singapore AF F-15 will be fitted with AESA,other countries such as japan,south korea and possible TW may opt for AESA upgrade.
upgraded F-8-2 fitted with conventional mechanical radar will be suicidal for the pilot when confronting AESA equip fighter,.seond the aircraft itself is base on old design,further upgrade for the aircraft will be consider waste of resources.
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Well this is just not a problem for the J-8II, currently no Chinese fighter aircraft carries AESA radar

The components inside the radar have a deep bearing on the range and quality, not the physical appearance of the radar's antenna.

From what I remember,

J-8I -> Type 204 aka SR-4
J-8B -> Type 208, later 208A, 208B

J-8I changed the radar to JL-7AG to make the J-8E, not sure what the exact radar designation is, but its based on the radar used on the J-7E.

J-7E -> JL-7A which is based from
J-7C -> JL-7
J-7D -> JL-7G?
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Ah, I see, and obviously the J-8D uses the Type 208B (whose range I'm still unclear about), J-8H uses the Type 1471 and the J-8F uses the Type 1492. Thanks!
 
Semi-Lobster

Semi-Lobster

Junior Member
crobato said:
The SAC jet seems completely indigenous and yet I never heard of it until now. I guess they don't show a lot of stuff until now. That certainly makes it the first Chinese indigenous jet. Originally I thought SAC's J-12 of 1966 was the first indigenous Chinese jet. Now make that the first supersonic jet.
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The Chinese designation for the 'FT-1' seems to be JJ-1. It seems that the Chinese don't really talk much about it except in passing. I still can't figure what happened, either the prototype crashed or there was a revised training system for fighter aircraft and the JJ-1 did not meet the requirements
 
tphuang

tphuang

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Staff member
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challenge said:
singapore AF F-15 will be fitted with AESA,other countries such as japan,south korea and possible TW may opt for AESA upgrade.
upgraded F-8-2 fitted with conventional mechanical radar will be suicidal for the pilot when confronting AESA equip fighter,.seond the aircraft itself is base on old design,further upgrade for the aircraft will be consider waste of resources.
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not necessarily. When supported by AWACS and with other fighters around. J-8F could be very useful against F-15s. they really just need to fly in, launch and fly away.
 
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