Korea Aerospace Research Institute

Other

Keun Bae Kim

Bo Hwa Lee

Otto A Schmid

Paul Seungkyu Min

Chun Taek Kim

Seok Min Ahn

Poo Min Park

Soon Bae Chung

Dong Sung Kim

Byeong Gyu Gang

Kyeong-Soo Kim

A power unit includes an engine including a driving shaft, a power generator provided on the driving shaft and configured to supply electric energy to a flight vehicle, and a thrust generator provided on an outer side of the power generator and configured to provide a propulsion force to the flight vehicle. When a temperature of the power generator is greater than or equal to a first temperature, the power generator and the thrust generator are decoupled from each other, and the power generator is driven by an output of the engine and supplies the electric energy to the flight vehicle. When the temperature of the power generator is less than the first temperature, the power generator and the thrust generator are coupled to each other, and the thrust generator is driven by the output of the engine and provides the propulsion force to the flight vehicle.

Power unit

An integrated hybrid power apparatus provided in a flying body includes a generator including a stator and a rotor, at least one engine disposed adjacent to the generator and including a cylinder, and a cooler configured to cool the generator and the engine and perform water-cooling that allows a coolant to circulate in the generator and the engine.

Integrated hybrid power apparatus

A power apparatus for integrated cooling includes a housing, a driving section disposed in the housing, a generator disposed in front or in rear of the driving section in the housing to generate electricity by receiving power from the driving section, and a cooling section disposed in front of the generator in the housing to inhale a fluid by receiving the power from the driving section and cool the generator and the driving section, wherein the cooling section is configured to divide the inhaled fluid toward the driving section and the generator to cool the driving section and the generator.

Power apparatus for integrated cooling and method for cooling the same

Provided is a high efficiency long range drone, and more particularly, a high efficiency long range drone capable of increasing flight time and efficiently using power during long range cruising flight by selectively using the power among an engine generator and a battery and applying an auxiliary wing.

High efficiency long range drone

As a component of an aerial vehicle, a power management system having an active power control device is provided. The system includes a solar cell converting solar energy into electric energy; a fuel cell provided in the aerial vehicle and converting fuel energy into electric energy by electrochemical reaction; a battery compensating for a lack of electric power supplied from the solar cell and the fuel cell to the aerial vehicle and storing surplus electric power; and an active power control device connecting with all the solar cell, the fuel cell and the battery and combining and distributing electric power generated in the solar cell, the fuel cell and the battery to loads. The system efficiently distributes the power from the respective power sources through the controllable output of the fuel cell in accordance with power required by the aerial vehicle and the solar cell's performance depending on weather.

Electric power supply system having active power control device

A multi-channel packet switching apparatus having traffic flow controlling and checking functions which is capable of simply controlling the system and having a simpler construction by concurrently performing a cell copy function and a cell routing function for providing a multi-casting function. The apparatus includes a synchronizing unit for synchronizing the cells recirculated through the recirculation link with the cells newly inputted into the routing unit based on time and providing to the routing unit, a reverse direction flow control requesting unit for counting the number of cells which are recirculated at every cell time and requesting a reverse direction flow control to a traffic providing source when the thusly counted number exceeds a threshold value, a reverse direction buffering control unit for restricting a cell output to the output port through which a request signal is outputted when a reverse direction flow control request signal is received from the traffic receiving source until the request signal is released, an error cell removing unit for removing an error cell based on the routing tag error among the cells from the bypass link by the routing unit within a predetermined time, and a cell loss counting unit for counting the cell loss which are not recirculated by the recirculation path setting unit by the input port.

Growing community of inventors

Daejeon, South Korea

Keun Bae Kim