The world’s longest aircraft – the 25 m Airlander 10 – crash-landed after clambering to an excess height because its mooring line became caught on power cables, a report has found.
The 302 ft( 92 m) long aircraft, which is part airplane and persona airship, nosedived after a test flight at Cardington Airfield in Bedfordshire on 24 August.
The Air Accident Investigation Branch said the line was hanging free after a first ground strive had failed.
No-one was injured in the accident.
At the time of the incident, Airlander’s developer, Hybrid Air Vehicles( HAV ), said here ship had “experienced a heavy ground and the figurehead of the flight deck held some damage”.
The crew, nonetheless, were “safe and well”.
The AAIB report into the incident went on to state that ground crew had told Airlander’s pilot the mooring line was about 50 ft( 15 m) long, but it was in fact 155 ft( 47 m ).
The rope grew caught in power lines near the airfield as the captain struggled two seconds landing.
“The encounter contributed to a high final approach”, examiners said.
The craft was about 180 ft( 55 m) over the landing site and was “reluctant to descend naturally”.
The pilot attempted to exercised the aircraft to a nose-down position to deliver its mooring line within reach of the field crew but it “suddenly pitched further down to about 18 degrees and was beginning to descend, ” the report stated.
“There was insufficient height in which to affect a full recuperation and the aircraft impressed the ground.”
Repairs were carried out on the cockpit and earlier this week HAV said these were terminated and Airlander was experiencing “an extensive exam chapter prior to its next flight”.
A new arrive system, which will allow it to return to soil from a greater straddle of angles, and a redesign to grant easier recuperation of the mooring line, are among changes that have been reached since the gate-crash, the company said.
Airlander 10 in numbers
44,100 lbs( 20,000 kg ): The weight of the airship 20,000 ft( 6,100 m ): The altitude it can reach 80 bows( 148 km/ h ): Maximum quickened 5 days: How long it can stay airborne during manned flights 22,050 lbs( 10,000 kg ): Total payload – the load the vessel has been unable to carry