First, the principle of jetpack
This "jet pack" is tied to the back of the human body. After launching, the two jets will eject high-heat airflow, pushing the person who binds and wears it into the air. At the same time, the controller can control the jet thrust. Size; to achieve the speed and altitude of the control flight; can also be used to reduce the jet thrust up to 120KM / hour. The jetpack was first developed by the US military around 1960; the current jetpack was invented by the PI Jet Company in Denver, USA. The company’s research costs for jetpacks have reached $1 million.
The American "Rocketman" Eric Scott took the jet raft fixed on his body and successfully flew over the 457-meter-wide Grand Canyon for 21 seconds.
Second, the specific structure and operation of the jetpack
The personal jetpack, invented by Air New Zealand designer Glenn Martin, looks more like a hovercraft than a jet. The motorcycle engine was driven by a car fan to drive two 200-horsepower twin propellers that were horizontally rotated in two devices that looked like an oversized soup can. According to Glenn Martin, this ducted fan design is more efficient than a helicopter unshielded engine. The engine, fuel tank and pilot are in the middle and below the lift fan to lower the center of gravity and prevent the jet pack from going upside down during the flight and hitting the ground.
The two control sticks of the personal jet pack protrude forward and are suitable for the pilot to grasp with both hands. On the left is a joystick that controls the forward and backward movement of the propeller and tilts to the sides. The right lever acts as an accelerator, while the engine start and stop switches and emergency parachute buttons are located behind the pilot's head.
This personal jet pack weighs approximately 115 kg and does not require a pilot license. It can fly 48 kilometers in 30 minutes and fly 90 kilometers in an hour. Recent experiments have shown that it can fly to a height of 2,400 meters and a top speed of 27 meters per second.
Third, the use of jetpacks
Martin Lauder, CEO of Martin Aircraft, said the personal jetpack is suitable for private users, even for military applications, and is an ideal tool for fire stations or emergency rescue.