It is just not about aero dynamic's, it's the airinlate's which can go higher cant go lower, thank's due to the DSI's.
You know the reason I wish we have powerful engines is that in future if we want to equip AMCA with Bramhmos missile. And that's assuming internal bays are big enough to accommodate or Brahmos would undergo miniaturization to fit into AMCA without compromising range and speed. We paid somewhere around $3.5 billion for upgrades of 50 Mirage 2000 jets. The upgrade itself costed us more than the original price of the aircraft.110 kn dry thrust means about 180kn wet thrust and for a twin engine aircraft total thrust would be 360 KN ......Bhai TANK udana hai Kya ?
All worth it if we get the know hows of the engine.
India can't make 160+Kn engine and can't get that technology if we make a heavy weight 5Th gen fighter we would also end up like Chinese with underpowered aircraft. It's better to build a perfect medium weight fighter with class leading engine.
I think he was explicitly making a point for AMCA platforms.110 kn dry thrust means about 180kn wet thrust and for a twin engine aircraft total thrust would be 360 KN ......Bhai TANK udana hai Kya ?
It's okay not now. But in 2040 we better have the technology and capability to build something like F-22 or F-35. Fingers crossed since this depends a lot on how big our economy is and our defense sector being vibrant with private sector participation. Technologically we should have progresses a lot by 2040.
But after getting access to know how about the core ,we will eventually make a bigger power plant for our other heavy aircrafts based on AMCA, that's the whole point about owning IPR,this is the first step i heard it will be a whole new core ,more powerful than Eurojet
AMCA itself will more than match f35 level of stealth with much better aerodynamics. It's avionics will also be ahead of f35 ( which is actually 2000-2010 level technology. )
If you mean 5th gen fighter engines then both XF9 and F119 are about 5 metres in length whereas F414 and EJ200 are about 4m in length.
F119 and XF9 are both for big heavy jets like F22 or su57 class.
XF 9's is a monster the final engine's will have a dry thrust of 140 KN's and a Wet thrust's of 200 KN's. It will weight around 2,000 Kg's and 4.8 m in lenght's and 1 m in Diameter's. The XF9-1 is a twin-spool axial-flow afterburning turbofan with a dual redundant FADEC, consisting of a 3-stage fan, a 6-stage high-pressure compressor, an annular type combustor, a single-stage high-pressure turbine, a single-stage low-pressure turbine, an afterburner, and a convergent-divergent nozzle.
Let's look at it from a 'stealth/range to cover' perspective.It is easier to make a 5th generation Aircraft around a 4m engine as compare to a 5m engine .
Also consider it's diameter and serpentine air intakes .
A bigger engine would eat up the space for internal weapon bays ....this is why a compact engine with high thrust to weight ratio should be preferred .
USA and Japan are technically superior Nations and their engines are compact for the thrust they produce .....but then compare the dimensions of the Russian or Chinese engines , why J20's internal weapon bay's weapon carrying capabilities are so low despite bigger size of J20 ?
There are advantages of bigger engines and bigger aircrafts but there are disadvantages too .
Because communist propaganda is far more effective than ANY missile until, of course, shit hits the fan.USA and Japan are technically superior Nations and their engines are compact for the thrust they produce .....but then compare the dimensions of the Russian or Chinese engines , why J20's internal weapon bay's weapon carrying capabilities are so low despite bigger size of J20 ?
Chinese can't produce the monster engine like XF 9's.
Stealth heavies
It will take at least 5 year's to get the WS 15's engine at the J 20's.Stealth heavies
F-22's F119 T/W 6.7:1 (dry), 9.0:1 (afterburning)
J20B is going into full rate production with AL-31 (about 5m in length) T/W 5.49 (dry), 8.75 with afterburner, 9.04 with emergency thrust
It's future engine the WS-15 T/W 9.7-10.87
China’s stealth fighter goes into mass production after thrust upgrade
The J-20B has overcome agility problems to finally be considered a fully fledged fifth-generation fighter, military source says.www.scmp.com
Stealth Medium Weighters
F-35's F135 iT/W 7.47:1 military thrust, 11.47:1 augmented
.. all the above are 5m engines
4m engines below..
FC-31 RD-93 T/W 4.82 (dry), 7.9 (afterburning)
it's future engine the WS-13 T/W = >8.5
EJ200 T/W 6.11:1 and 9.17:1 (with afterburner)
GE F414 58kN/98kN T/W 9
(*) all figures from wikipedia
As can be seen there is no disadvantage in T/W if opting for 5m engines, both can do a ratio of about 9 with AB. If the bigger engine eats up 1m in length then it also allows a 3m larger plane (F-22 19m, J-20 20m) vs medium weight stealth (F-35 16m, FC-31 17m). You stand to gain 2m in length for fuel and internal weapons with increased endurance.
Stealth heavies
F-22's F119 T/W 6.7:1 (dry), 9.0:1 (afterburning)
J20B is going into full rate production with AL-31 (about 5m in length) T/W 5.49 (dry), 8.75 with afterburner, 9.04 with emergency thrust
It's future engine the WS-15 T/W 9.7-10.87
China’s stealth fighter goes into mass production after thrust upgrade
The J-20B has overcome agility problems to finally be considered a fully fledged fifth-generation fighter, military source says.
Stealth Medium Weighters
F-35's F135 T/W 7.47:1 military thrust, 11.47:1 augmented
.. all the above are 5m engines
4m engines below..
FC-31 RD-93 T/W 4.82 (dry), 7.9 (afterburning)
it's future engine the WS-13 T/W = >8.5
EJ200 T/W 6.11:1 and 9.17:1 (with afterburner)
GE F414 58kN/98kN T/W 9
(*) all figures from wikipedia
As can be seen there is no disadvantage in T/W if opting for 5m engines, both can do a ratio of about 9 with AB. If the bigger engine eats up 1m in length then it also allows a 3m larger plane (F-22 19m, J-20 20m) vs medium weight stealth (F-35 16m, FC-31 17m). You stand to gain 2m in length for fuel and internal weapons with increased endurance.
