J-20 5th Gen Fighter Thread VI

[latenlazy]

My view is that larger calibre rounds are better.

We now have guided bullet rounds like EXACTO, so range will become more important than spraying out a huge number of rounds.
Imagine if a laser could target the cockpit of an opposing aircraft.

And if a stealth fighter even gets damaged by 1 round, I imagine that it will no longer be stealthy to X-Band radar.
That makes it an easy target in the air or results in a mission kill because you have to repair or replace a section of the aircraft.

Come to think of it, could this be the reason we don't see a gun on the J-20 yet?

Russia is supposed to be developed a smart bullet with a range of 10km

Guided rounds don’t work when the maneuver envelope they need to hit their target is 3 dimensions rather 2, and when said target also moves in 3 dimensions rather than 2. This idea isn’t tenable for A2A engagement.

 

[foxmulder_ms]

It's good to see spending given in PPP terms rather than the ridiculous $175 billion figure at market rates most often quoted or SIPRI's $220 billion. It should be appreciated in many more quarters that the bulk of China's defense spending is internal, where PPP figures are the ones that count. I think China will gradually increase military spending as a share of GDP - hopefully ending up with 3.5 - 4% of GDP by 2030 - rather than a sudden jump, which would risk losses to corruption and other inefficiencies.

4% will be a mistake. 2% is good. 1.5% is even healthier.

 

[TerraN_EmpirE]

I think the reason (at least for the SD-10A) being larger/longer than the AIM-120 series is its speed. According to the brochure below the SD-10A speed is greater than mach 5 .

I tried to fit in 3x missiles in one compartment based on Bltizo's post, but until we get clearer images I would have to say you cannot fit 3x even with the rear fin folded. The center fins still obstruct.

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well you guys seem obsessed with squeezing in 1 more missile per rack I am wondering about how many guided bombs and missiles per rack.
F22 is feared for her air to air capabilities. But those also make here a top of the line strike bird. Her super cruise means he can extend the range of a guided SDB to a remarkable degree.
The additional ordinence in the bays of her means she can flex more pulling more mission types.

This reminds me of the old argument about machine guns and cannons. Should you install machine guns, which have a higher rate of fire and can spray more bullets, or should you install cannons, which shoot farther and have a heavier punch?

You want the right mix. Back in world war 2 there were four schools.
Small caliber
Small caliber mixed with cannon
Uniform mg.
Small caliber didn't do enough damage to bring down some of the metal mono wings unless you happened to hit some thing sweet.
Mixed worked better but the cannon was often of a hard to use type and ammo was low so every shot counted.
Uniform worked well as long as you picked a good caliber.
World war 2 ends and the U.S. goes to Korea with M2 Brownings as there air to air weapon they quickly find that new Russian Migs jets are tough and the fifty cals aren't as hot as they used to be. The Russians have big 30mm cannons.
The U.S. moves to 20mm it proves more effective.
It's a question of what you are facing. If you had used those Browning in CAS against infantry it would have worked better then against machines like armor and aircraft.

My view is that larger calibre rounds are better.

to a degree but you want to have enough ammo in reserve and you have to consider weight, Ballance and recoil. The A10s gun is infamous but recoils up to 5 tons of force each of the engines on the A10 out out 4 tons force. Together they produce 8 tons.

We now have guided bullet rounds like EXACTO, so range will become more important than spraying out a huge number of rounds.
Imagine if a laser could target the cockpit of an opposing aircraft.

Speed and stresses come in to play and besides that EXACTO can only maneuver to a set degree no bullet will ever make as sharp a bank as a missile.

And if a stealth fighter even gets damaged by 1 round, I imagine that it will no longer be stealthy to X-Band radar.

Depends on the X band and where the damage is as well as how bad. If it say blows a tail off yeah but something smaller it might get away. But if you are in gun range to damage a stealth to begin with them it's visible to you the effectiveness of low observable is directly corisponding to range. Aircraft guns are generally 3 Mike weapons. If you are that close then stealth is not a factor.

That makes it an easy target in the air or results in a mission kill because you have to repair or replace a section of the aircraft.

Any close range fighting like that turns into a turn and burn dog fight that will eat fuel at the end of the fight the pilot is going to RTB no matter if there is a hole in his bird or just some spent ammo.

Come to think of it, could this be the reason we don't see a gun on the J-20 yet?

More likely they just don't have a gun ready at the weight and ejection to there liking.

Russia is supposed to be developed a smart bullet with a range of 10km

Its one thing to fire from a relivtivly stable platform like the ground another at hundreds of km pulling 2Gs

Guided rounds don’t work when the maneuver envelope they need to hit their target is 3 dimensions rather 2, and when said target also moves in 3 dimensions rather than 2. This idea isn’t tenable for A2A engagement.

Exactly.

 

[by78]

Pardon the interruption... Some images may have been posted before, but no in such high-resolution...

 

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