Airlander 10, the world's largest aircraft, has crashed during its second test flight. 
 
 The huge ship – nicknamed "The Flying Bum" because of its pert, round back – crashed as it landed at its base at Cardington Airfield this morning, at the end of its second attempt to fly. Its official name is the Martha Gwyn – however, it gained notoriety not just because of its huge size but the interesting shape of its back. 
 
 "We're debriefing following the second test flight this morning," a spokesperson for the ship's makers, HAV, said. "All crew are safe and well and there are no injuries." 
 
 It isn't clear if the ship itself took any damage during the crash. 
 
 The ship appears to have run into problems as it was making its way back onto the ground, when it flew into a telegraph pole and began running into problems. 
 
 World's largest aircraft takes off 
 
 "A line that was hanging down from the plane hit the telegraph pole about two fields away," one eyewitness said. "Then, as it came in to land, it seemed to nose dive and landed on the cockpit, smashing it up." 
 
 The 302-foot long ship made its maiden voyage last week. 
 
 The ship is on sale for £25 million. The makers hope that it can be sold for a variety of uses – including surveillance, communications and deliveries. 
 
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 2/43 A humanoid robot gestures during a demo at a stall in the Indian Machine Tools Expo, IMTEX/Tooltech 2017 held in Bangalore Getty Images 
 
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 4/43 Engineers test a four-metre-tall humanoid manned robot dubbed Method-2 in a lab of the Hankook Mirae Technology in Gunpo, south of Seoul, South Korea Jung Yeon-Je/AFP/Getty Images 
 
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 7/43 Engineers test a four-metre-tall humanoid manned robot dubbed Method-2 in a lab of the Hankook Mirae Technology in Gunpo, south of Seoul, South Korea Jung Yeon-Je/AFP/Getty Images 
 
 8/43 Waseda University's saxophonist robot WAS-5, developed by professor Atsuo Takanishi Rex 
 
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 Airlander 10 can carry a ten tonne payload and is supposed to be abel to stay in the air for up to five days. The company hopes to be building ten of them per year by 2021. 
 
 The Independent's bitcoin group on Facebook is the best place to follow the latest discussions and developments in cryptocurrency. Join here for the latest on how people are making money – and how they're losing it. ||||| The world's longest aircraft - the Airlander 10 - has been damaged after nosediving on landing during its second test flight. 
 
 The 302ft (92m) long aircraft - which is part plane and part airship - was damaged during the flight from Cardington Airfield in Bedfordshire. 
 
 The £25m craft sustained damage to its cockpit when it hit the ground at about 11:00 BST. 
 
 HAV, the developer, said all the crew were "safe and well". 
 
 A spokesman said: "The flight went really well and the only issue was when it landed." 
 
 Live: For more on this and other stories from Bedfordshire 
 
 The company has denied claims from a witness that a line hanging down from the vehicle hit a telegraph pole about two fields away from its landing. 
 
 Image copyright sbna Image caption The £25m plane is understood to have sustained damage to its cockpit 
 
 In a statement, Hybrid Air Vehicles (HAV), said: "The Airlander experienced a heavy landing and the front of the flight deck has sustained some damage which is currently being assessed." 
 
 The vehicle had just completed its planned 100-minute flight when it nosedived as it came in to land. 
 
 "Hybrid Air Vehicles runs a robust set of procedures for flight test activities and investigation of issues," the company added. 
 
 "We will be running through these in the days ahead as we continue the development of the Airlander aircraft." 
 
 The Air Accidents Investigation Branch has confirmed it is investigating the crash, but said it would not be sending a team to the site. 
 
 The aircraft had its first test flight from the airfield on 17 August. 
 
 Image copyright sbna Image caption Airlander 10 is understood to have suffered damage on its return to Cardington Airfield 
 
 Christened the Martha Gwyn, it was first developed for the US government as a surveillance aircraft but the project was shelved amid defence cutbacks. 
 
 HAV launched a campaign to return the Airlander 10 to the skies in May 2015. It claims it could be used for a variety of functions such as surveillance, communications, delivering aid and even passenger travel. 
 
 It says the huge aircraft will be able to stay airborne for about five days during manned flights. 
 
 The company hopes to be building 10 Airlanders a year by 2021. 
 
 Airlander 10 in numbers 
 
 44,100 lbs (20,000kg): The weight of the airship 
 
 20,000ft (6,100m): The altitude it can reach 
 
 80 knots (148km/h): Maximum speed 
 
 5 days: How long it can stay airborne during manned flights 
 
 22,050 lbs (10,000kg): Total payload - the weight the ship is able to carry
– The world's longest aircraft is likely going to have a similarly lengthy repair bill after a bit of a bumpy landing on Wednesday during its second test flight in the UK, the BBC reports. The $33.1 million, 302-foot-long Airlander 10—officially named the Martha Gywn, but called "the Flying Bum" by some for its "pert, round back," per the Independent—was returning to the Cardington airfield in Bedfordshire when an eyewitness said a line hanging from the plane hit the pole and caused the plane to slow-mo its way into a nosedive, inflicting damage to its cockpit. A rep for manufacturer Hybrid Air Vehicles refutes the pole claim, but says the company is assessing what happened and tells the Independent the crew is safe and no injuries have been reported. (The Airlander had its maiden voyage less than a week ago.)