Cardington Chronicles No 15 Jan 16 | Page 9

team, but also a new beginning; the start of a new way of working, with a new regulator and with a renewed sense of purpose - to return Airlander to flight. The company has also built a stateof-the-art Flight Simulator that is now up and running, and the first “flight” under the guidance of Test Pilot, Dave Burns. Over the last few months work has focused on the physical tasks of reassembling and preparing the aircraft for flight. The envelope has been inspected and repairs made by a team of ten technicians from the manufacturer, ILC Dover, who spent six months at Cardington undertaking the work. Whenever an airship envelope is folded for storage or transport, there is inevitably some damage to the fabric due to folds and creasing. HAV also wanted the envelope to have a complete inspection just in case any additional damage was done during deflation. Very little was found and the envelop has been given a clean bill of health and can be expected to provide years of service. Inflation of the envelope with helium got underway towards the end of October 2015. Because the envelope was bare and not fitted with any of the hard structure such as fins, engines and gondola, it was first inflated with full ballonets, and a ‘dirty’ fill of helium which is helium mixed with air. This would reduce the amount of lift generated and in turn the strain on the tie-down patches and ropes. A bare envelope, carrying no additional weight, could easily put enough force on ties down patches to result in damage to the envelope. With the first fill of helium complete, the AIRLANDER envelope became ‘airborne’ at 22:00 on 31st October 2015. The opportunity was then taken to move the envelope to the front of the hangar where a new concrete floor had been laid as part of the renovation of the shed. This was achieved by securing the envelope to four forklift trucks, one at each ‘corner’, and slowly moving it forwards. Once in its new location by the front doors, additional helium would be added and to the envelope, and then purified to remove the air, in order to generate more lift as components were added.