Just too many variables makes it harder to implement technically and economically.
F-16 engine swap meant a bigger intake for the GE equipped birds vs the P,&W ones.
You can put a higher thrust engine of similar dimensions more or less but if the airflow is the same as before, you will not realize those gains with the new engine.
TWR or T/W ratio = (Max Thrust of Engine / (Empty Weight + (3.505 Tonnes of Fuel & Weapons, or only Internal Fuel)))
1.30 - Su-35BM
1.29 - F-15K
1.26 - Su-27S
1.25 - Eurofighter
1.24 - Mig-35
1.23 - Su-27SK & J-11A
1.19 - Rafale C
1.19 - Mig-29M/M2
1.19 - F-15C
1.18 - F-22 (T/W = 1.37 with Round nozzles)
1.16 - Su-30MKK
1.15 - F/A-18E/F
1.15 - Mig-29B (9-12)
1.14 - Su-30MKI
1.13 - Rafale M
1.13 - Mig-29 (9-13), S, SD, SE & SM
1.10 - Mig-29 BM & SMT (T/W = 1.15 during Emergency Thrust*)
1.09 - F-16E Block 60
1.09 - Mig-29K
1.09 - F-18C
1.09 - J-8III(or J-8C)
1.08 - F-35A
1.08 - F-14 B & D
1.06 - F-16C Block 52 (Block 50: T/W = 1.055)
1.05 - J-8IIm
1.04 - AV-8B+ Harrier II
1.03 - F-2A (F-2B: 1.02)
1.03 - JH-7
1.02 - F-16A Block 10
1.01 - J-8II & J-8IIb & J-8IId
1.00 - F-35B
1.00 - Harrier GR7A
0.99 - Su-34 & Su-32FN & Su-27IB
0.99 - Sea Harrier FA2 & FRS51
0.99 - F-16A Block 20
0.98 - J-10A
0.97 - Su-15T
0.95 - MiG-23 P, ML, MLA & MLD
0.94 - F-35C
0.94 - Gripen NG
0.94 - F-4E
0.94 - J-8
0.93 - Mirage 2000-5
0.93 - Su-15TM
0.93 - F-101B
0.92 - Harrier GR7
0.92 - E E Lightning F6
0.91 - F-16C Block 25
0.91 - Yak-28 I & P
0.91 - F-111F
0.91 - Su-24
0.90 - Su-15
0.88 - Mirage-2000 C & H
0.87 - LCA
0.87 - F-14A
0.87 - Mig-23 MF & MS
0.87 - Su-24 M, MK & M2
0.86 - ****-1
0.86 - Su-9
0.84 - Su-11
0.84 - Su-17M
0.83 - Tornado F3 Air Defence Variant
0.83 - Tornado GR1
0.83 - Su-20
0.82 - JF-17 (T/W = 0.86 during Emergency Thrust*)
0.82 - Su-22
0.81 - Gripen A
0.81 - Su-7B
0.81 - F-20
0.80 - Gripen C
0.80 - Mig-27K
0.80 - Su-7BM
0.79 - Mig-21 Bis (T/W = 1.11 in Emergency Thrust mode**)
0.79 - JA-37 Viggen
0.79 - Mig-27
0.79 - Su-17M2
0.78 - Mig-23BN
0.78 - Su-7 BKL & BMK
0.78 - Javelin FAW MK9
0.77 - Mig-23S
0.77 - J-7IIIa
0.76 - Mig-27 D & ML
0.76 - Mig-23M(E)
0.76 - F-106A
0.76 - F-7MG & F-7BG & F-7PG & J-7E & J-7G (WP-7N: T/W = 0.69)
0.76 - Q-5D
0.75 - Kfir C.7
0.75 - Kfir C.2
0.75 - AJ-37 Viggen
0.75 - J-7III
0.74 - Mig-21SM
0.73 - Su-17
0.73 - Mig-21MF
0.73 - Su-17M3
0.73 - Mig-19S*** (MTOW T/W = 0.86)
0.72 - Yak-27K
0.72 - Su-17M4
0.72 - F-104G
0.71 - Mig-19P*** (MTOW T/W = 0.84)
0.71 - Mig-21PF
0.71 - Supermarine Scimitar F.1
0.71 - Cheetah C
0.70 - Mig-21M
0.70 - Su-25SM
0.69 - Jaguar GR1
0.69 - J-35F Draken
0.69 - Mig-21F
0.69 - Mig-21 F-13
0.69 - J-7II
0.69 - Su-25 or Su-25T
0.68 - F-105F/G
0.68 - Mirage 50
0.68 - F-7M(or F-7MP or F-7MB) & F-7P
0.67 - F-1
0.67 - F4D-1/F-6 Skyray
0.66 - Mirage F-1
0.66 - F-8P
0.64 - F-102A
0.63 - Sea Vixen FAW.2
0.63 - Su-25TM or Su-39
0.62 - Yak-27
0.61 - Yak-38M (TWR during STOVL/VTOL takeoff: 1.20)
0.61 - Mirage-5A
0.61 - J-32B Lansen
0.60 - A-4S1
0.59 - Mirage-III E & D
0.58 - Yak-38 (T/W during STOVL/VTOL takeoff: 1.16)
0.58 - IAI Nesher
0.58 - F-5E Tiger-II
0.56 - F-100D
0.56 - A-6E
0.55 - A-7E
0.51 - Super Étendard
0.50 - F3H-2 Demon
0.49 - A-10A
0.49 - F-11A
0.49 - AMX
0.47 - Étendard-IV M
0.46 - F-89D
0.46 - Super Mystère B.2
0.46 - Hunter F 6
0.45 - Marut Mk.1
0.43 - Yak-25
0.43 - F-94C/F-97A
0.43 - F9F-8/F-9J Cougar
0.41 - A-37B
0.37 - Mystère IVA
0.37 - FJ-4 Fury
0.36 - F7U-3M
0.34 - F-84F
0.33 - J-29F Tunnan
0.33 - P-80C
0.32 - Supermarine Attacker F.1
0.31 - F2H-3 Banshee
0.30 - Ouragan M.D.450B
0.30 - F3D-2 Sky Night
0.29 - Venom FB.1
0.29 - F-84G
Pure Interceptors
1.30 - Mig-31M
1.30 - Mig-31BM
1.28 - Mig-31B
1.27 - Mig-31FE
1.27 - Mig-31E
1.22 - Mig-31
1.21 - Mig-25M
1.00 - Mig-25 P & PD
0.93 - Mig-25BM
0.74 - Tu-128
Empty Weight - Thrust - Aircraft
41,447 - 31,967 X 2 - Su-35BM
37,500 - 29,160 X 2 - F-15K
36,111 - 27,557 X 2 - Su-27S
24,251 - 20,000 X 2 - Eurofighter
24,251 - 19,841 X 2 - Mig-35
37,192 - 27,557 X 2 - Su-27SK & J-11A
20,948 - 17,000 X 2 - Rafale C
25,573 - 19,841 X 2 - Mig-29M/M2
31,700 - 23,450 X 2 - F-15C
43,340 - 30,100 X 2 - F-22(35,000lbf - Thrust with round nozzle)
39,903 - 27,557 X 2 - Su-30MKK
30,600 - 22,000 X 2 - F/A-18E/F
24,030 - 18,300 X 2 - Mig-29B (9-12)
40,565 - 27,557 X 2 - Su-30MKI
22,478 - 17,000 X 2 - Rafale M
24,692 - 18,300 X 2 - Mig-29 (9-13), S, SD, SE & SM
25,573 - 18,300 X 2 - Mig-29 BM & SMT (19,180lbf - Emergency Thrust*)
22,000 - 32,500 X 1 - F-16E Block 60
28,550 - 19,841 X 2 - Mig-29K
24,700 - 17,700 X 2 - F-18C
22,509 - 16,535 X 2 - J-8III(or J-8C)
29,300 - 39,900 X 1 - F-35A
43,600 - 27,800 X 2 - F-14 B & D
19,700 - 29,160 X 1 - F-16C Block 52 (Block 50: 420lb & 240lbf more)
21,671 - 15,422 X 2 - J-8IIm
14,865 - 23,400 X 1 - AV-8B+ Harrier II
21,000 - 29,600 X 1 - F-2A (F-2B: 21,235lb)
31,967 - 20,515 X 2 - JH-7
15,600 - 23,830 X 1 - F-16A Block 10
21,671 - 14,815 X 2 - J-8II & J-8IIb & J-8IId
32,000 - 39,900 X 1 - F-35B
15,708 - 23,400 X 1 - Harrier GR7A
49,163 - 28,219 X 2 - Su-34 & Su-32FN & Su-27IB
14,052 - 21,450 X 1 - Sea Harrier FA2 & FRS51
16,285 - 23,830 X 1 - F-16A Block 20
20,394 - 27,557 X 1 - J-10A
22,818 - 14,770 X 2 - Su-15T
22,553 - 28,660 X 1 - MiG-23 P, ML, MLA & MLD
34,800 - 39,900 X 1 - F-35C
15,653 - 22,000 X 1 - Gripen NG
30,328 - 17,845 X 2 - F-4E
20,470 - 13,219 X 2 - J-8
16,000 - 22,045 X 1 - Mirage 2000-5
23,970 - 14,770 X 2 - Su-15TM
28,495 - 16,900 X 2 - F-101B
15,708 - 21,450 X 1 - Harrier GR7
28,042 - 16,360 X 2 - E E Lightning F6
18,238 - 23,770 X 1 - F-16C Block 25
21,980 - 13,448 X 2 - Yak-28 I & P
47,481 - 25,100 X 2 - F-111F
46,738 - 24,692 X 2 - Su-24
22,531 - 13,669 X 2 - Su-15
16,538 - 21,384 X 1 - Mirage 2000 C & H
14,330 - 19,100 X 1 - LCA
40,104 - 20,900 X 2 - F-14A
24,008 - 27,558 X 1 - Mig-23 MF & MS
49,163 - 24,801 X 2 - Su-24 M, MK & M2
14,300 - 09,500 X 2 - ****-1
16,920 - 21,164 X 1 - Su-9
18,876 - 22,267 X 1 - Su-11
21,605 - 24,692 X 1 - Su-17M
31,970 - 16,410 X 2 - Tornado F3 Air Defence Variant
31,065 - 16,005 X 2 - Tornado GR1
21,936 - 24,692 X 1 - Su-20
14,520 - 18,300 X 1 - JF-17 (19,180lbf - Emergency Thrust*)
23,027 - 25,353 X 1 - Su-22
14,595 - 18,097 X 1 - Gripen A
18,453 - 21,164 X 1 - Su-7B
13,150 - 17,000 X 1 - F-20
14,991 - 18,097 X 1 - Gripen C
26,252 - 27,558 X 1 - Mig-27K
18,629 - 21,164 X 1 - Su-7BM
12,037 - 15,654 X 1 - Mig-21 Bis (21,829lbf - Emergency Thrust**)
27,866 - 28,100 X 1 - JA-37 Viggen
24,317 - 25,336 X 1 - Mig-27
23,369 - 24,692 X 1 - Su-17M2
24,692 - 25,336 X 1 - Mig-23BN
19,599 - 21,164 X 1 - Su-7 BKL & BMK
23,955 - 12,300 X 2 - Javelin FAW MK9
21,583 - 22,487 X 1 - Mig-23S
11,629 - 14,815 X 1 - J-7IIIa
25,573 - 25,336 X 1 - Mig-27 D & ML
22,046 - 22,487 X 1 - Mig-23M(E)
24,420 - 24,500 X 1 - F-106A
11,667 - 14,650 X 1 - F-7MG & F-7BG & F-7PG & J-7E & J-7G (WP-7N: 13,450lbf)
14,054 - 08,269 X 2 - Q-5D
17,130 - 18,750 X 1 - Kfir C.7
16,061 - 17,901 X 1 - Kfir C.2
27,006 - 25,970 X 1 - AJ-37 Viggen
11,861 - 14,650 X 1 - J-7III
11,574 - 14,308 X 1 - Mig-21SM
21,164 - 21,164 X 1 - Su-17
11,795 - 14,308 X 1 - Mig-21MF
26,014 - 24,692 X 1 - Su-17M3
12,009 - 07,165 X 2 - Mig-19S*** (MTOW: 16,667lb)
15,443 - 08,318 X 2 - Yak-27K
26,810 - 24,692 X 1 - Su-17M4
14,082 - 15,600 X 1 - F-104G
12,507 - 07,165 X 2 - Mig-19P*** (MTOW: 17,042lb)
11,354 - 13,492 X 1 - Mig-21PF
23,962 - 11,250 X 2 - Supermarine Scimitar F.1
14,550 - 15,900 X 1 - Cheetah C
11,795 - 13,613 X 1 - Mig-21M
20,723 - 09,921 X 2 - Su-25SM
15,432 - 08,040 X 2 - Jaguar GR1
17,339 - 17,262 X 1 - J-35F Draken
10,624 - 12,654 X 1 - Mig-21F
10,739 - 12,654 X 1 - Mig-21 F-13
11,850 - 13,219 X 1 - J-7II
20,944 - 09,921 X 2 - Su-25 or Su-25T
28,393 - 24,500 X 1 - F-105F/G
15,763 - 15,870 X 1 - Mirage 50
11,629 - 13,219 X 1 - F-7M(or F-7MP or F-7MB) & F-7P
14,017 - 07,305 X 2 - F-1
16,024 - 16,000 X 1 - F4D-1/F-6 Skyray
16,314 - 15,873 X 1 - Mirage F-1
19,700 - 18,000 X 1 - F-8P
19,350 - 17,200 X 1 - F-102A
27,954 - 11,240 X 2 - Sea Vixen FAW.2
23,677 - 09,921 X 2 - Su-25TM or Su-39
15,395 - 07,165 X 2 - Yak-27
16,535 - 14,770 X 1 - Yak-38M (Lift Engines: 07,165lbf X 2)
14,550 - 13,669 X 1 - Mirage-5A
16,535 - 14,680 X 1 - J-32B Lansen
10,250 - 10,800 X 1 - A-4S1
15,540 - 13,669 X 1 - Mirage-III E & D
15,476 - 13,448 X 1 - Yak-38 (Lift Engines: 06,724lbf X 2)
16,061 - 13,669 X 1 - IAI Nesher
09,558 - 05,000 X 2 - F-5E Tiger-II
20,638 - 16,000 X 1 - F-100D
25,630 - 09,300 X 2 - A-6E
19,781 - 15,000 X 1 - A-7E
14,220 - 11,265 X 1 - Super Étendard
21,287 - 14,400 X 1 - F3H-2 Demon
29,000 - 09,065 X 2 - A-10A
13,810 - 10,500 X 1 - F-11A
14,837 - 11,030 X 1 - AMX
13,007 - 09,703 X 1 - Étendard-IV M
24,200 - 07,400 X 2 - F-89D
14,087 - 09,920 X 1 - Super Mystère B.2
14,121 - 10,146 X 1 - Hunter F 6
13,658 - 04,856 X 2 - Marut Mk.1
12,610 - 04,409 X 2 - Yak-25
12,708 - 08,750 X 1 - F-94C/F-97A
11,866 - 08,500 X 1 - F9F-8/F-9J Cougar
06,211 - 02,850 X 2 - A-37B
12,941 - 07,734 X 1 - Mystère IVA
13,210 - 07,700 X 1 - FJ-4 Fury
18,210 - 04,600 X 2 - F7U-3M
13,830 - 07,220 X 1 - F-84F
10,681 - 06,070 X 1 - J-29F Tunnan
08,420 - 05,400 X 1 - P-80C
08,426 - 05,100 X 1 - Supermarine Attacker F.1
13,183 - 03,250 X 2 - F2H-3 Banshee
09,132 - 04,991 X 1 - Ouragan M.D.450B
14,989 - 03,400 X 2 - F3D-2 Sky Night
09,200 - 04,856 X 1 - Venom FB.1
11,470 - 05,560 X 1 - F-84G
Pure Interceptors
48,281 - 36,376 X 2 - Mig-31M
48,115 - 36,376 X 2 - Mig-31BM
45,569 - 34,171 X 2 - Mig-31B
49,383 - 36,376 X 2 - Mig-31FE
46,297 - 34,171 X 2 - Mig-31E
48,104 - 34,171 X 2 - Mig-31
41,667 - 29,762 X 2 - Mig-25M
41,447 - 24,684 X 2 - Mig-25 P & PD
45,415 - 24,684 X 2 - Mig-25BM
54,013 - 22,706 X 2 - Tu-128
# Data from Official Company & Military sites, Aerospaceweb.org, Airwar.ru, Globalsecurity.org, Fas.org, Warfare.ru, Wikipedia.org & its References, and Other Sources.
The above figures of twr of different ac prove without a doubt that be a great ac ur twr need to be above....well above one n not just touching it
Thats wt separates the good ac from the great ac.
For twin engine ac it needs to be closer to 1.5.
For single engine ac it needs to be closer to 1.1
It is the single most factor that separates the phudu ac from great fighter ac
en.wikipedia.org
