一点参考资料, 从J-2到J13

J - Jianjiji (Fighter)

Designation Manufacturer Model; Remarks
J-2 Mikoyan MiG-15; versions include J-2 and JJ-2 (MiG-15UTI); J-2/JJ-2 designations questionable!
J-4 Mikoyan MiG-17F; versions include J-4 and JJ-4 (MiG-17U); J-4/JJ-4 designations questionable!
J-5 Shenyang/Chengdu MiG-17PF built in China; versions include J-5, J-5A, J-5R, JJ-5 and JZ-5  
J-6 Shenyang MiG-19 built in China; versions include J-6 (Mig-19S/SF), J-6A (Mig-19PF), J-6B (Mig-19PM), J-6C (Mig-19SF), J-6bis (improved J-6), J6Xin (improved J-6A), J-6I, J-6II, J-6III, J-6IV (cancelled), JJ-6 ("MiG-19UTI") and JZ-6 (MiG-19R)  
J-7 Chengdu MiG-21F built in China; numerous versions, most important are
- based on MiG-21F-13: J-7, J-7I, J-7II (export: F-7B), J-7IIA, J-7H (J-7IIH), F-7M Airguard (export), F-7P/MP Airbolt (export)
- based on MiG-21MF: J-7C (J-7III), J-7D (J-7IIIA)
- 3rd generation J-7: J-7E (J-7IV), J-7EB, J-7EH, J-7G, F-7MG/PG (export)
- trainer: JJ-7 ("MiG-21U"), JJ-7A, FT-7P/PG (export)  
J-8 Shenyang Developed from MiG-21 (NATO "Finback"); versions include J-8, J-8A (J-8I; "Finback A"), J-8B (J-8II; "Finback B"), J-8C (J-8III), J-8D (J-8IIA; J-8II with AAR), J-8E (J-8A with new radar & avionics), J-8F (J-8IIF), J-8M (J-8IIM; improved J-8II; "Finback C") and JZ-8  
J-9 Chengdu Single-engine Mach 2.4 fighter project (1970s; canard layout); not built
(reports referring to J-9 as a CATIC fighter project based on MiG-23 are probably in error)  
J-10 ? Swing-wing all-weather fighter project (late 1960s); not built, number later re-used
J-10 Chengdu Multi-role fighter; versions include J-10A (single-seater) and J-10B (two-seater)
J-11 Shenyang Single-engine lightweight fighter design (late 1960s); not built, number later re-used
J-11 Shenyang Sukhoi Su-27SK (also two-seaters Su-27UBK and Su-30MKK) built in China; versions include J-11, J-11A and J-11B
J-12 Nanchang Single-engine ultra-lightweight STOL fighter project (1970s); prototypes only; number might be re-used
J-12 - Possibly reserved for XXJ project; designation unconfirmed!
J-13 Shenyang Advanced single-engine fighter project (1980s); not built; number will most likely be re-usedJ - Jianjiji (Fighter)

Designation Manufacturer Model; Remarks
J-2 Mikoyan MiG-15; versions include J-2 and JJ-2 (MiG-15UTI); J-2/JJ-2 designations questionable!
J-4 Mikoyan MiG-17F; versions include J-4 and JJ-4 (MiG-17U); J-4/JJ-4 designations questionable!
J-5 Shenyang/Chengdu MiG-17PF built in China; versions include J-5, J-5A, J-5R, JJ-5 and JZ-5  
J-6 Shenyang MiG-19 built in China; versions include J-6 (Mig-19S/SF), J-6A (Mig-19PF), J-6B (Mig-19PM), J-6C (Mig-19SF), J-6bis (improved J-6), J6Xin (improved J-6A), J-6I, J-6II, J-6III, J-6IV (cancelled), JJ-6 ("MiG-19UTI") and JZ-6 (MiG-19R)  
J-7 Chengdu MiG-21F built in China; numerous versions, most important are
- based on MiG-21F-13: J-7, J-7I, J-7II (export: F-7B), J-7IIA, J-7H (J-7IIH), F-7M Airguard (export), F-7P/MP Airbolt (export)
- based on MiG-21MF: J-7C (J-7III), J-7D (J-7IIIA)
- 3rd generation J-7: J-7E (J-7IV), J-7EB, J-7EH, J-7G, F-7MG/PG (export)
- trainer: JJ-7 ("MiG-21U"), JJ-7A, FT-7P/PG (export)  
J-8 Shenyang Developed from MiG-21 (NATO "Finback"); versions include J-8, J-8A (J-8I; "Finback A"), J-8B (J-8II; "Finback B"), J-8C (J-8III), J-8D (J-8IIA; J-8II with AAR), J-8E (J-8A with new radar & avionics), J-8F (J-8IIF), J-8M (J-8IIM; improved J-8II; "Finback C") and JZ-8  
J-9 Chengdu Single-engine Mach 2.4 fighter project (1970s; canard layout); not built
(reports referring to J-9 as a CATIC fighter project based on MiG-23 are probably in error)  
J-10 ? Swing-wing all-weather fighter project (late 1960s); not built, number later re-used
J-10 Chengdu Multi-role fighter; versions include J-10A (single-seater) and J-10B (two-seater)
J-11 Shenyang Single-engine lightweight fighter design (late 1960s); not built, number later re-used
J-11 Shenyang Sukhoi Su-27SK (also two-seaters Su-27UBK and Su-30MKK) built in China; versions include J-11, J-11A and J-11B
J-12 Nanchang Single-engine ultra-lightweight STOL fighter project (1970s); prototypes only; number might be re-used
J-12 - Possibly reserved for XXJ project; designation unconfirmed!
J-13 Shenyang Advanced single-engine fighter project (1980s); not built; number will most likely be re-used