SamuraiBlue
Captain
Actually not that much since a kite can only go up so far. I believe it can only reach around 2,000 m at most.
US Military News, Reports, Data, etc.
- Thread starter tphuang
- Start date
Actually not that much since a kite can only go up so far. I believe it can only reach around 2,000 m at most.
TerraN_EmpirE
Tyrant King
And it might prove a safety hazard for helicopters, osprey, harriers and lightings if tethered to a LHA or LHD.
Yes, TE, you are right.
IMHO, the real answer for the LHD/A vessels is this one:
I have not given up hope on it either.
With the COD mission coming in for the Navy, that will get the Navy into US Navy use...and with the Japanese looking at it...all sorts of those possibilities starting coming back to the fore.
IMHO, the real answer for the LHD/A vessels is this one:
I have not given up hope on it either.
With the COD mission coming in for the Navy, that will get the Navy into US Navy use...and with the Japanese looking at it...all sorts of those possibilities starting coming back to the fore.
Naval Today said:
Another great picture of one of the mainstays of US Navy power projection. That's a San Antonio Class LPD, followed by a Wasp Class LHD, followed by a Whidbey Island class LSD. Right at 80,000 tons of Amphibious assault right there.
TerraN_EmpirE
Tyrant King
Ok This is remarkable for a few reasons first M249 weighs 17.5 pounds and is widely used in both the US version M249 and the Belgian FN MINIMI whos Para model is 14.5 pounds. and Vehicle model is lightest at 11.7 pounds all empty weights. It takes this version of the M249 to the second lightest belt fed 5.56x45mm LMG I can think of Even lighter then the Knights Armament Company STONER LMG A1 with a weight of 10 pounds. and the Magazine fed Ultramax 100 series, but not as light as the belt fed Ares Shrike 5.56mm conversion kit which when fitted with a M4A1 lower comes to about 7.5 pounds or the USMC's magazine fed M27 at 7.9 pounds.New light machine gun: M249 put on weight control
Defense Media Activity - Army
Story by
Date: 05.04.2015
Posted: 05.11.2015 14:54
News ID: 162916
PICATINNY ARSENAL, N.J. -- When engineers here looked at the heavy, 17.5-pound M249 carried by Soldiers, they decided to put it on a diet and rearrange some of the components, Kori Phillips said.
She said when her team was finished, the M249, formerly known as the Squad Automatic Weapon, went from 17.5 to 9.2 pounds. That is only about two pounds heavier than the M16A2 rifle.
The M249 light machine gun also took on a longer name. It is now called the Cased Telescoped Light Machine Gun, or CT LMG.
Phillips, who spoke during media day here, May 4, is a project engineer with the Joint Service Small Arms Program.
No new exotic metals were used to lighten it, she said, just machining components down in size. As for rearrangements, the biggest was detaching the firing chamber from the barrel.
The new, external firing chamber has the added benefit of keeping the gun cooler and reducing the likelihood of rounds cooking off in the chamber, Phillips said.
As for the rounds, program engineers designed new ones that are cased in a plastic-like substance, replacing the brass cartridges. This, she said, has resulted in a 39-percent reduction of ammo weight.
The CT LMG was test-fired by Soldiers on Fort Benning, Georgia, in September 2011, she said. Those and subsequent tests showed the CT LMG to achieve 25 percent more first-round target hits than the heavier model M249 now in use.
The Soldiers liked it so much, some of the squad leaders said they wanted every Soldier in their squad to have one, she said.
They cannot though, she said, because it is still considered in development until long-term testing determines how well it stands up over time, and, of course it would have to become a program of record. Another round of testing begins this fall. No other timetable was given.
Grenade munitions
CT LMG was not the only new developmental weapon on display for media day. Dozens of other systems were too, including a 40mm grenade, which Soldiers can launch from their rifle-mounted grenade launchers.
This is nothing like your grandfather or even father's M433 grenade, fielded in the early 1970s, however.
It is an "autonomous, air-bursting, low velocity" grenade with a "smart fuse," said Steven Gilbert, project manager, Small Arms Grenade Munitions.
Autonomous means Soldiers do not have to do anything different than they do now when they fire grenades except to ensure it is the new autonomous one, he said.
The smart fuse, he said, senses when the grenade is going over a wall and when it does, it air bursts, presumably taking out adversaries hiding behind the wall.
Asked whether it could do the same to an enemy hiding behind a tree, Gilbert said yes, it senses that as well and would burst just as it passes the tree trunk.
Gilbert said that the proximity sensor in the fuse is smart enough to detect clutter nearby the triggering obstacle. The triggering obstacle could be things like a wall or a tree from 50 to 200 meters.
Asked what sort of sensor the grenade contains that differentiates clutter from triggering obstacles, Gilbert said that is highly classified.
The new grenade, which does not have a name yet, can also point detonate up to 400 meters like an ordinary M433. If the sensor doesn't detect a valid obstacle, it simply explodes on impact.
Testing in February showed an airburst reliability of 76 percent. Gilbert did not have a timeline beyond that, as it is not a program of record and is incubating in development.
Staying on track
It is hard to stay on track at Picatinny since trees grow between its 1903 Carnegie Steel rails over which ammo trains once rolled during the two world wars. Trucks do the job now.
But scientists and engineers still need to stay on track in the development process, and that can be a problem when the main thing they understand is physics and materials, said Andrea Stevens, Armament Research, Development and Engineering Center's manager for innovation, who keeps their projects from derailing.
There is a lot more than lab work needed to keep a development on track, she said. For example, there is an entire process for getting patents approved - and Picatinny produces more patents each year than any other Army installation. Also, there is the matter of latching on to a funding stream because without that, a project lacks enough steam to move down the track.
And, she said, there are a lot of other things a project might need help on such as modeling. It is one thing to see how a part looks in a CAD drawing and it is another to actually hold the part in your hand.
Today, ordinary people can buy 3-D printers to do that in plastic, she said. Picatinny has those.
Picatinny also has a 3-D printer that can print out various types of flexible plastics and even printed circuit cards used in computers and electronics. That really speeds the development cycle, she said.
The arsenal also houses a 3-D printer that prints in various types of metals so that the prototyped part produced also accurately represents the feel, strength and heft of the one being developed.
Ralph Tillinghast, lab director for the Collaboration Innovation Lab, has that state-of-the art printer that produces 3-D metal objects in many shapes and sizes and even can do very intricate, thread-like details.
The lab's printer does it with lasers, he said. It shoots out a layer of metal and then builds another layer on top of that. Each new layer is welded onto the existing layer by the laser. It can do most metal including steel, stainless steel and even cobalt and titanium.
It does not do so well with aluminum, however, which is considered a soft metal, he said.
Tillinghast said his lab also uses machines parts. He showed a large, heavy bronze part that goes inside an M2A2 aiming circle, which may have been manufactured during World War II and is still in use today for aiming mortars and artillery, sort of like a compass.
He then showed an aluminum part in the exact shape as the bronze one that could be used in its place. Of course, the aluminum was much lighter.
Asked about its strength, he said the aluminum one was actually stronger than the bronze one because it contained strengthening alloys similar to those used in high-performance aircraft parts.
Whatever the engineers need, Stevens and Tillinghast help them and their projects stay on the modernization track.
The changes in manufacture on this are not unique Barrett Rifle Company a few years back did the same thing to the M240. The FN designs remember were designed over 30 years ago using rivets and large number of steel stampings using more modern techniques the same designs lost a lot of weight.
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Equation
Lieutenant General
This is great. Why armed every infantry with just a standard assault rifle when you can do it with a lighter M249 with just 2 pounds heavier than the rifle? Imagine the increase of fire power in a platoon size element would be. Of course the grenadiers and RTO guys would just had to bulk up just a tad to carry that extra weight.
TerraN_EmpirE
Tyrant King
..... No.This is great. Why armed every infantry with just a standard assault rifle when you can do it with a lighter M249 with just 2 pounds heavier than the rifle? Imagine the increase of fire power in a platoon size element would be. Of course the grenadiers and RTO guys would just had to bulk up just a tad to carry that extra weight.
I can see the advantage to a degree but this is intended for a specific role. That of the LMG.
Belt fed LMG's take a lot longer to reload then magazine fed weapons. Also consider the weights I gave are empty weights. A M4A1 weights 7.5 pounds with out accessories but with a loaded magazine, a M16A4 with 30 round box loaded is still 8.97 pounds.
The 9.2 pounds of the CT LMG is empty weight. no ammo 100 rounds of CT is 2 pounds so with a full 150 round belt its 12 pounds that's before optics and accessories Impressive as the empty weight of a M249 is 17 pounds but 22 pounds loaded. however still not as light as a assault rifle. also consider that CT ammo tech can be applied to assault rifles to making them even lighter.