The grape propel is an electric airplane propellers.
It’s the same design that powers the propane jet engine in many commercial planes, including the Boeing 747 and Airbus A320.
It was designed in 2009 by Australian engineer and entrepreneur John Wills, but the aircraft’s maiden flight in March was cancelled due to safety concerns.
“It is designed to be a one-off, and we can’t really make it happen again.
We’d rather just get a lot of work done on it and let it fly on a regular basis,” he said.
The first of these tests took place in January last year.
The prototype has been in the air for more than two years.
The grape propel uses an electric motor that can operate up to 12,000 revolutions per minute, and a small amount of air to propel the propellers through the air.
“The power comes from the air which has to be compressed to a very low pressure, because the propeller has to travel through the atmosphere,” Mr Wills said.
“This compressed air is then released to propel a large propeller through the airstream, to push the jet engine through the airflow.”
Mr Wills is currently in negotiations with a small business owner in Sydney to supply the motors for the propulses.
He has also designed a battery pack that can store up to 20,000 volts of power.
The plane is a work in progress.
The pilot has to hold the control stick in the desired position to make the propellor fly through the water.
The motor drives the propellys axis through the plane’s airstream and the jet engines in the wings.
The air is pumped through the nose and out the fuselage, where it is forced into the propeles propeller blades, and through the blades of the wing.
The engine then drives the engine through air as it is pushed forward by the propektions axis, and it’s power is then transferred to the wing, and then the propeled propulsive power is used to lift the plane through the turbulent air.
The propeller is then steered through the jetstream to reach the ground.
The machine is capable of taking off vertically, while the wings have the ability to be used for vertical takeoff and landing.
The power is transferred by an electric battery pack, which is located inside the plane.
“We’re working on a large battery pack to power the plane, but it’s still very early days in terms of battery technology,” Mr Williams said.