J-20 5th Gen Fighter Thread IV (Closed to posting)

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plawolf

Lieutenant General
Here's a new image which seems to confirm this theory ... attached are the original (huge one) + two smaller ones I tried a bit to modify !

Deino :D

I love this engineering solution, thanks for the pics, although I do wish they would not stamp their logo right on top of the rail as it is quite distracting and hides some details.
 

siegecrossbow

General
Staff member
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Another cross sectional drawing of the side-bay mechanism in case you still can't figure out how it works:

VOpaV6e.jpg
 

kyanges

Junior Member
THAT is an absolutely fascinating solution to the weapons bay launch rail.

EDIT: I wonder if they can use this as an extra hardpoint for weapons that can't fit into the side bays for non stealthy missions?

Yeah, the entire set up looks overly complicated. One main door, three smaller other doors. I'd prefer they'd just shove the missile out, and be done with it.

But the idea that they could use it to hold some kind of external weapon is interesting. What would they hold out there?
 

Engineer

Major
You described it in a nutshell

hhg posted this over on CDF

j20launchrail.gif


Definitely a different way to go about the sraam weapons bay. At least no one can accuse them of copying F-22.

I wonder if this configuration and the lower launch rail position is a necessity of the canards. Either way it looks like the time taken from door opening to rail return should be sufficiently fast. The shorter time of the bay door being open should also reduce overall drag of the entire sraam firing mechanism compared to f-22, whose both side bay doors stay open the entire time .

If I remember correctly, an SRAAM has to be able see the opponent aircraft in order to get a lock. This requires the missile to be stuck out of the aircraft throughout the WVR engagement, not pop out at the last moment. If the animation is an accurate depiction of how the side-bay works, then the J-20 can basically change mode by going from pure internal carriage to pure external carriage. This solution would indeed have a lower drag penalty than F-22, since the latter has to deal with drag associated with an opened weapon bay.
 
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Blitzo

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That means the missile, being launched from rail, is not drop from the pylon like the F-22. Is that right?

The F-22's side bays do not fire their sidewinders in a drop fashion either. Their motors ignite on the pylon itself.
 
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