What is an autorotation landing?
Descent and landing. For a helicopter, “autorotation” refers to the descending maneuver in which the engine is disengaged from the main rotor system and the rotor blades are driven solely by the upward flow of air through the rotor.
Can you land a helicopter with no power?
Unlike a plane, which can glide a large distance with no power, a helo has no way to slow down—or so the thinking goes. Actually, helicopters have a built-in mechanical control called the collective pitch lever that allows them to descend slowly and land even if the engine dies. This maneuver is called autorotation.
What happens if a helicopter runs out of gas?
When a helicopter loses an engine, it doesn’t fall to the ground like a rock. It enters into what is called an “Autorotation”. That is where the pilot reduces the pitch of the rotor blades thus creating a windmilling effect as air blows up thru the rotor blades and the aircraft loses altitude.
What is an EC45 helicopter?
EC45. The Eurocopter EC145 is a twin-engine light utility helicopter manufactured by Eurocopter. The helicopter is marketed for passenger transport, corporate transport, emergency medical services (EMS), search and rescue, parapublic and utility roles.
How do you do a landing autorotation?
To enter the autorotation, the pilot lowers collective all the way down, simultaneously adding right pedal. Lowering the collective maintains RPM during the entry to autorotation, and keeps the AOA (angle of attack) at a normal value during the glide.
How autorotation is used to land a helicopter?
A: Autorotation helps a helicopter land when the engine fails because the air around the main rotor powers the rotor. As the helicopter is falling, the air rushes up from underneath the main rotor. Since the rotor is a propeller, as the air rushes past the blades, it pushes the blades, thus turning the rotor.
Which is safer plane or helicopter?
Understanding a Helicopter Accident According to the National Transportation Safety Board (NTSB), helicopters crash at a higher rate than airplanes. The crash rate for general aircraft is 7.28 crashes per 100,000 hours of flight time. For helicopters, that number is 9.84 per 100,000 hours.
How much does a Lakota helicopter cost?
On 7 June 2013, Thailand requested the sale of six UH-72A Lakotas with associated equipment, training, and support for an estimated cost of $77 million.
When was the first flight of the EC145?
General description of the EC145 (BK 117) History. The EC145 (BK 117) was developed in a joint co-operative design between MBB Germany (part of Eurocopter) and Kawasaki Heavy Industries Japan. As BK117 A1 it had its first flight on June. 12th 1979 and received its type certification in 1982.
Why is Eurocopter EC 145 T2 maintenance friendly?
A “maintenance-friendly” helicopter designed to reduce operating costs Building on Eurocopter’s extensive experience gained with the BK117/EC145 helicopter family, the EC145 T2’s maintenance procedures optimize the intervals between periodical inspections, providing for increased availability and reduced operating costs.
What are the safety features of the EC145?
Twin-engine reliability is complemented by a fully separated fuel system, a tandem hydraulic system, dual electrical system and redundant lubrication for the main transmission. Further positive safety aspects of the EC145 are design elements like energy absorbing fuselage and seats, as well as crash resistant fuel cells.
When did the Airbus EC145 BK 117 come out?
The EC145 (BK 117) was developed in a joint co-operative design between MBB Germany (part of Eurocopter) and Kawasaki Heavy Industries Japan. As BK117 A1 it had its first flight on June. 12th 1979 and received its type certification in 1982. The BK117 A2 was only used for evolution tests but never certified.