A RAILGUN is a devastating hypersonic cannon that can blast projectiles at Mach 7 – but how do they work?
Here’s our lowdown on what a railgun is, how powerful they are, and who has the technology…
What is a railgun?
A railgun is a type of weapon that uses powerful electromagnets to accelerate projectiles to very high speeds.
Conventional weapons typically use explosives or propellant to launch ammunition, but electromagnetic forces make it possible for a railgun to achieve a much higher “muzzle velocity”.
This means that while a normal gun might manage a projectile speed of around 2km/s, a railgun could blast out projectiles 50 per cent faster, at at least 3km/s.
It also means that you don’t need to transport explosive propellants or warheads, which could make a railgun-toting warship much safer than traditional vessels.
How powerful are they?
The giant cannon can hit ships over 125 miles away – and tear through armoured hulls like tissue paper.
The US navy has a railgun that can shoot projectiles at up to 5,000mph.
To fire, the gun needs 25megawatts of electricity – but most battleships only have nine.
The impact can be measured at up to 32,000,000 joules.
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Does the Chinese government have the technology?
Last week pictures were released of a Chinese warship that appeared to be carrying one of the super-weapons.
The images suggest Beijing has beaten the United States and Russia to getting the next generation weapon into operational testing.
US reports suggest the Chinese cannon can hit targets nearly 125 miles away, and the People’s Liberation Army plans to have their navy equipped with the weapon by 2025.
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News Pictures What is a railgun, how powerful are they and does the Chinese Navy have the technology?
You don’t have to pack away your bikini just because you’re the wrong side of 20. These body-beautiful stars reveal their secrets to staying in shape and prove you can smoulder in a two-piece, whatever your age. Read on and be bikini inspired!
TEENS
Hayden Panettiere
Size: 8
Age: 18
Height: 5ft 1in
Weight: 8st
To achieve her kick-ass figure, Hayden – who plays cheerleader Claire Bennet in Heroes – follows the ‘quartering’ rule. She eats only a quarter of the food on her plate, then waits 20 minutes before deciding whether she needs to eat again.
Hayden says: “I don’t have a model’s body, but I’m not one of those crazy girls who thinks that they’re fat. I’m OK with what I have.”
Nicollette says: “I don’t like diets – I see it, I eat it! I believe in eating healthily with lots of protein, vegetables and carbs to give you energy.”
kim cattrall
Size: 10-12
Age: 52
Height: 5ft 8in
Weight: 9st 4lb
SATC star Kim swears by gym sessions with Russian kettle bells (traditional cast-iron weights) and the South Beach Diet to give her the body she wants. To avoid overeating, Kim has a radical diet trick – squirting lemon juice on her leftovers – so she won’t carry on picking.
Kim says: “I am no super-thin Hollywood actress. I am built for men who like women to look like women.”
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