I've added a bit of contrast to make it stand out and drawn out an outline
Is it possible for the left canard to get in the way of a shot?
J-20 5th Gen Fighter Thread V
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Is it possible for the left canard to get in the way of a shot?
Unless the gun is in a turret and can swivel, nope.
The canard can only "pitch" -- it can't "yaw" or "roll" relative to the aircraft, so as long as the gun is placed in a position where the line of sight does not cross the canard during any of the canard's pitching, and so long as the gun cannot swivel (and no fighters have forward facing guns which swivel, to my knowledge) then there's no reason to suspect such a position to get in the way.
The suspected gun position on J-20 is actually very similar to that of F-22, and to get a sense of why J-20's gun won't intrude on its canard simply find a picture of F-22's gun position and imagine a pair of canards on sides of F-22's intakes (which is the same forward gun+canard positioning of J-20), and in such a situation the gun would not cross the canards either.
No Sir
No Sir! I am being rather broad here, the gun is inboard of the left wing root on the left upper fuse, and my statement is technically in-accurate as the gun appears atop the left middle nacelle. My point is that the gun will not likely require any canting inboard, as earlier wing mounted cannons did for sighting. I believe the wing mounted machine guns of WW-II were "regulated to converge at a point ahead of the aircraft, and were canted slightly inboard to converge at say arbitrarily at 500 yds or whatever in order to concentrate the field of fire?
This slight offset off center-line will need no compensation by the gun sight, it will likely aim the pipper straight down the center line, thank-you for asking questions, and giving me an opportunity to clarify my thinking.
I do believe master Wolf has "nailed" the location of the gun, would you concur? We should give him the Kodak award for a good eye this month, maybe a roll of Kodachrome 64 to go in his classic Nikon???
Master Jeff is in fact an engineer, and is absolutely correct that the center line of the aircraft is technically defined by the central fuselage top longeron or spine depending on aircraft construction, and fuel or weapons carried down the center of the lower fuselage are said to be located on the centerline. Fuel and weapons may be mounted in pairs, offset to either side of the centerline on some aircraft, they would technically be noted to be carried "abreast" the centerline. I did not note the guns position as such since there is only one weapon with a light off-set from the centerline, if there were two, one either side, I would refer to them as being mounted "abreast".
this gun position is referred to as being "shoulder mounted".
Brat, are you looking at the sam pic I am for the gun?
What Wolf and Bltizo are talking about (shwon in red outline above) is set well to the left of the centerline (longitudinally), well back on the left intake, when looking from the front of the aircraft.
When speaking of the centerline, I would think you were talking about the centerline along the length of the aircraft.
Am I missing something?
No Sir! I am being rather broad here, the gun is inboard of the left wing root on the left upper fuse, and my statement is technically in-accurate as the gun appears atop the left middle nacelle. My point is that the gun will not likely require any canting inboard, as earlier wing mounted cannons did for sighting. I believe the wing mounted machine guns of WW-II were "regulated to converge at a point ahead of the aircraft, and were canted slightly inboard to converge at say arbitrarily at 500 yds or whatever in order to concentrate the field of fire?
This slight offset off center-line will need no compensation by the gun sight, it will likely aim the pipper straight down the center line, thank-you for asking questions, and giving me an opportunity to clarify my thinking.
I do believe master Wolf has "nailed" the location of the gun, would you concur? We should give him the Kodak award for a good eye this month, maybe a roll of Kodachrome 64 to go in his classic Nikon???
Master Jeff is in fact an engineer, and is absolutely correct that the center line of the aircraft is technically defined by the central fuselage top longeron or spine depending on aircraft construction, and fuel or weapons carried down the center of the lower fuselage are said to be located on the centerline. Fuel and weapons may be mounted in pairs, offset to either side of the centerline on some aircraft, they would technically be noted to be carried "abreast" the centerline. I did not note the guns position as such since there is only one weapon with a light off-set from the centerline, if there were two, one either side, I would refer to them as being mounted "abreast".
this gun position is referred to as being "shoulder mounted".
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No Sir! it is not! Note the gun is inboard of the canard and wing roots.
As well locating the gun and muzzle of the barrel behind the intakes, preclude the possibility of the engines ingesting spent gases, or blowby from the muzzle of the gun into the intakes.
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That almost certainly is not the gun. The top of the left hand intake has hump to accommodate the pivot for the canard. That hump would be located ahead of the muzzle of any gun located around that access panel, and prevent any gun there from firing directly ahead.
There is no hump for the pivot of the canard, pictures from the frontal aspect and side aspect depict it. There is a clear line of sight, and I'm not sure what hump you speak of.
If anything there is a natural depression that occurs from where the muzzle of the gun would be to the air intake due to the geometry of the air intake itself.
No, I think J-20's drag chute is in the midline of the aircraft, between the two engines in its own enclosed hatch. Here are pictures of it about to fully close and we can see the drag chute hatch is in the midline of the plane.
You are quite correct, I do believe that aft darkened door may be the drogue chute door, it appears to be just in front of the "rudder-vators". The chute is most certainly the aft door on the aircraft centerline.
The procedure is called 'gun harmonization'.
On modern day fighters with an offset mounted gun like the F-16, the avionics should take into consideration everything and project the gun solution into the HUD.
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