TerraN_EmpirE
Tyrant King
Like I said two years Old. Thanks.
SamuraiBlue
Captain
No worries.
100nm??
I don't think there are any big guns in the past or present that has that kind of range excluding rail guns.
I don't think Japan requires guns with that kind of range in either case which will likely conflict article 9 of the present constitution.
The AGS 155mm system to equip the Zumwalts is currently planned to shoot a Long Range Land Attack Projectile (LRLAP) to an 83nm range, though some sources report max ranges to 100nm. I believe the 83nm range is more realistic for the 155mm 63 caliber gun.
A version of the LRLAP is also being deigned or the 127mm (5") 54 caliber mk 45 guns used by the US Navy with a 53nm range.
SamuraiBlue
Captain
Those are definitely not for Japan. With a CEP of 50m they can only be used for land attack purpose which as I had posted earlier conflicts with article 9 of our constitution.
They probably have initial velocity of somewhere around mach 7~10 and would probably take up to 30~50 seconds to impact similar to an SRBM with a similar range.(basically both flight profile would be the same.)
Jura The idiot
General
Jeff: What do you mean? I hope you didn't refer to the EX-171 ERGM, which "was to be a full-calibre 127mm shell propelled with a rocket booster and with a special, high-energy propelling charge, meant to achieve a 41 to 60 nautical miles range." but it's history now: "ERGM never managed to overcome its many problems, however, while unitary cost continued to escalate. In Fiscal Year 2008 the US Navy interrupted the over 12 years of work on the ERGM, effectively killing the program." according to If interested in this history, see also etc.
Jura The idiot
General
SamuraiBlue:
It's still a gun, so the muzzle velocity is much lower ( says 825 mps, which would mean 1328 m/s, slightly less than Mach 4) BUT check this: "The test successfully demonstrated a sustained maximum rate of fire of at least ten rounds per minute in eight round bursts, and unloaded eight complete rounds from a pallet in 45 seconds or less."
It's still a gun, so the muzzle velocity is much lower ( says 825 mps, which would mean 1328 m/s, slightly less than Mach 4) BUT check this: "The test successfully demonstrated a sustained maximum rate of fire of at least ten rounds per minute in eight round bursts, and unloaded eight complete rounds from a pallet in 45 seconds or less."
SamuraiBlue
Captain
So basically it spreads wings and glide in after reaching apex. There are some drawbacks with this kind of technology one of them being terminal speed will be relatively slow(slow supersonic or sub sonic in some cases) due to drag generated by the wings in which case it could be shot down with radar targeting anti-aircraft guns with proximity fuse. Second, impact time of these shells will vary and will be difficult to calculate due to air resistance. Range will also vary due to wind conditions since it is a glider with no propulsion of it's own.
BAE systems, the same company that has developed the LRLAP for the 155mm gun, has also developed a Round for the 127mm gun. The UK may abandon its long standing 4.5 inch gun for the 5" gun to get this projectile for the Type 26 Frigates. A recent issues of stated:
Aviation Week said:
This is dated September 2013.
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Jura The idiot
General
Thank you, Jeff! I overlooked this one :-( (as you know, I'm new to future naval warfare
Graphics:
The most recent information I just found: dated Wednesday 26 June 2013
The site which has covered LRLAP:
Sorry, Jura. My apologies. I had to correct the date of my Aviation Week article from my last post. It was actually published September 2013 and not 2011. It is very recent info.