Saturday, 11 February 2012

BigDog - Robot Pack Mule

It looks like there's going to be robots packing gear for our infantry in the field, although the application wouldn't be purely military.  Robotic supply trains must be on the horizon if this works out.  Big Dog is an all-terrain 4 legged robot that was inspired by an engineer's dog (way better than the wheeled rover thingy from SG-1).  This robot is loud due to the gas motor running in the prototypes, but it has pretty good terrain navigation abilities.  The AI and mechanics of this machine are pretty amazing.


http://www.bostondynamics.com/robot_bigdog.html

BigDog can do the following:
  • runs at 4 mph
  • can walk through mud, snow, water, and ice
  • can climb slopes up to 35 degrees
  • can move through rubble
  • carries a 340 lb load. 
It also traveled 12.8 miles without stopping or refueling.  This machine is pretty amazing and was developed under the DARPA umbrella as the Legged Squad Support System. Created under DARPA's Big Dog Technology and called the LS3 (or Lassie).  The current version is ready to receive voice command programming with instructions like "sit," "stop," or "come here." Normally, there is a remote used to operate it. BigDog is now in its final 18-month development cycle with Army and Marine field trials last. 
In some of the video I was really impressed by how it recovered its balance after being kicked to the side.







Saturday, 4 February 2012

A Second War of the Worlds - A Battlefield Vignette


Please stand by.  This is the Emergency Broadcast System. The Federal Government has declared a state of emergency and has invoked the War Measures Act. Martial law is in effect.  Please do not panic and await further instructions for your locality.  The Prime Minister will address nation at 5 PM eastern standard time, 3 PM mountain standard time.  This station will keep you posted as to any further news as soon as it becomes available...

Please stand by.  This is the Emergency Broadcast System.  The Federal Government has declared a state of emergency...

Flickr / Morning Calm News
The Martian war machines came striding south over the hill.  For their huge size, they were strangely quiet.  One would have imagined loud thumping noises as they walked, but they only made a slight whine as their tall spider-like legs fluidly moved.  At first, only two machines were visible, then two more appeared over the rise.  There were just four machines, but four identical machines had already mauled the Canadian First Mechanized Brigade that had opposed them first. 

Captain Kale thought it was odd he wasn't scared as he observed the alien machines moving towards his fighting positions.  His first time in actual combat and it wasn't even against a foe the U.S. Army had ever prepared for.  For a moment he was enthralled by the sight of the 100 foot tall war machines.  The photos he had seen at the intelligence briefing had not completely prepared him.

They had six spider-like legs, and walked - or was it a scuttle - forward two pairs of legs at a time.  The central body was like a flattened egg, a rounded tear drop, that had the narrow end forward.  On top of the body was a thick stubby pillar that contained sensors and the terrifying beam weapon that burned through steel plate like it a blowtorch through a tin sheet.  This was the enemy and he had to stop it.

Kale took his eyes off the distant war machines and looked to his left and right.  He could see both neighbouring tanks were already buttoned up, with only the turrets visible over the hill.  However, they were both well camouflaged and he only spotted them as he knew where they were.  His company of M1A2 Abrams tanks were the core of the first line of defence against these southward moving Martians.  He couldn't see the rest of his mechanized battalion, but he knew additional tanks and TOW armed Bradley IFVs were well camouflaged around them. 

Just a week before they had been on maneuvers with the Canadian Armed Forces at Wainwright, and now they were dug in, hull down, along a low ridgeline overlooking a creek and the Number 2 Highway.  The Martians would be facing an impressive amount of firepower waiting in ambush.  The sound of distant helicopter rotors reached his ears and he knew the Apache gunships were maneuvering into position.  The show was about to start and he had a front row seat.  He dropped down into the turret and shut the hatch behind him, buttoning up his tank.  Looking through the commander's sight, he set the magnification to 4x on the lead war machine and designated it as the target to the gunner.  "Sabot!" he shouted into the mike.

"Up!" replied the loader, as he loaded the armour piercing round into the cannon.

The laser rangefinder showed 2100 metres and closing. The aliens were well within range.  The 120 mm gun had a 90% chance of scoring a kill on an enemy tank at 2000 metres.  Still, he held his fire.  The gunships were to initiate combat and the tanks were to fire immediately afterwards.

Somewhere behind him, several spotting helicopters, edged themselves up above the treeline.  Only a bulbous extension at the top of a mast above the main rotor for each Kiowa was visible to the enemy as they did this.  With all the sensors and laser designator in the bulb, it was not necessary to expose the entire helicopter.  Spaced out well around the Kiowa, the Apache gunships hovered like impatient wasps.  Cued by their spotting helicopters, the Apaches did a brief popup above the trees to ripple off a pair of Hellfire missiles, 5 seconds apart, then descended back down to maneuver into new firing positions.  Each of the war machines had been illuminated by the laser designator of a spotting chopper and the Hellfires homed in on their targets.  The barrage of Hellfire smoke trails was the visible to everyone.

Suddenly the order to fire crackled over the battalion radio net.  "Fire!" Kale repeated to his company.

There was a sharp crack and the tank vibrated as the main gun fired. "On the way!" shouted the gunner.  All along the ridge, the 14 tanks of his company opened fire into their designated kill zones.

As the cannon breach moved forward, the loader was already in motion to open the breach, and load a new round into the gun.  They could get off 6 rounds per minute this way.

Explosions began to erupt all over the body of the Martian war machines.  Hellfires struck the bodies of the war machines dead on target. Each Hellfire had high explosive shaped charge for a warhead.  When they exploded the blast was concentrated into a single point where it would vapourize steel plate, turning it into a supersonic jet of plasma that could burn its way through nearly a yard of steel. 

The war machines were staggered by the blasts, their legs stopped moving forward and were still.  Seconds later, still shrouded in blackish smoke, the armour piercing shells from the 120mm guns on the tanks struck home.  Each round was a sharpened rod of depleted uranium, one of the densest materials produced by man.  Unlike the Hellfires, these shells punched right through armour with the sheer kinetic energy of a heavy projectile travelling over 1200 meters per second.  Capable of punching through nearly a meter of steel, a single shot kill against enemy tanks could be achieved with 90% certainty at distances of 2000 meters.

The smoke was dense, and hard to see through.  Kale switched his sight to thermal mode to get a better picture.  The war machines were still standing, but they were still.  Suddenly, they begain moving foward again.  "Shit!" he exclaimed.  The gunner could see what he saw as their sighting system could be synced.  "Fire at will!" he ordered.

The gunner just pulled the trigger, and the main gun roared again.  Neither could believe the amount of punishment the alien machines had just taken. Round after round landed on target.  Bright flashes could be seen through the thermal sight indicating the shell hits on the war machines.  The volume of fire was steady, but the machines came on.  The distance was down to 1900 meters and closing. 

More firepower was needed.  The interior of the tank was full of cordite fumes from the firing that burned the lungs and eyes. In the old days, spent shell casings would also have littered the floor of the tank, but the 120 mm shells had combustible casings that burned up in the breech on firing. "New orders.  Concentrate fire on the lead machine!" he radioed out.  The tank company responded almost immediately to his command.  The lead machine flashed with hits from the tanks, but kept coming.  The range was now 1500 meters.  Suddenly there was a brilliant fireball as an explosion erupted from the machine.  It seemed to see-saw for several seconds then went crashing to the ground.   

A cheer went up from the crew of the tank and Kale could almost imagine the cheers inside the other tanks.  "Select second target!" He ordered.

The second war machine had taken a lot less fire. It had closed to 1600 meters. Its primary weapon swung to bear on the firing tanks, whose positions were clearly marked by their muzzle flashes.  A bright beam of light flashed out and struck the turret of an M1.  For a split second the tank seemed untouched by the brilliant blue beam. The next second it exploded in a massive fireball, its ammunition cooking off.  With unerring accuracy, the war machine picked off three more tanks as it continued pressing forward.

It was time to head to the second line of prepared positions.  "All tanks, fallback!" Kale ordered over the radio.  "Bradley's prepare to cover."


All of the surviving tanks popped smoke and began backing up out of their fighting positions to head to the second line of defence.  The Bradley fighting vehicles, armoured personnel carriers with 25 mm guns and TOW missiles fired from their previously hidden positions.  A wave of wire guided anti-tank missiles shot out towards the advancing martians...