Korea Research Institute of Standards and Science

Korea Aerospace Research Institute

Jong Chul Kim

Jeong Hoon Kim

Dong Hyun Cho

Min Ki Kim

Hae Dong Kim

In Kyu Kim

Gi Hyuk Choi

Sang Man Moon

Byung Il Choi

Su Yong Kwon

Dong Young Rew

Sang Cherl Lee

Eun Sup Sim

Sang Hyuck Han

Hyeon Cheol Gong

Tae Soo No

Jin-Won Kim

Sung Tae Moon

Jin Young Suk

An apparatus and method of charging and housing of an unmanned vertical take-off and landing (VTOL) aircraft is disclosed. The apparatus can accommodate an aircraft, and the apparatus includes a landing platform on which the aircraft lands, a housing portion to monitor state data by housing or charging the aircraft, and a sensor to assist in landing of the aircraft by allowing the aircraft to communicate with the apparatus. The apparatus enhances operational efficiency by reducing a travel time of the aircraft.

Apparatus and method of charging and housing of unmanned vertical take-off and landing (VTOL) aircraft

The present invention relates to a measurement method of dew-point in low temperature, and more specifically to a measurement method of accurately distinguishing dew-point and frost-point using a quartz crystal microbalance dew-point sensor in a low temperature of 0&#xb0; C. or less. To this end, the present invention provides a measurement method of distinguishing dew and frost point using a quartz crystal microbalance dew-point sensor in low temperature, comprising the steps of: measuring a resonant frequency of a quartz crystal microbalance dew-point sensor while slowly dropping temperature; observing shock waves of the resonant frequency; and determining dew point or frost point through the observation of the resonant frequency and shock waves of the quartz crystal microbalance dew-point sensor.

Measurement method of distinguishing dew and frost point using quartz crystal microbalance dew-point sensor in low temperature

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Daejeon, South Korea

Jong Chul Kim