Patents by Inventor Yenan Liu

Yenan Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9796487
    Abstract: A fuel-free spacecraft propelling system having an open-ended outer cylinder of a propelling device and an atomic oxygen collecting device is disclosed. The latter is arranged at the forwardly-propelled front end of the outer cylinder and is hermetically connected with an RF generating device and an ion cyclotron wave heating device through a magnetic confinement device. A spiral wave discharge oxygen plasma inlet and a spiral wave discharge oxygen plasma outlet in the ion cyclotron wave heating device are respectively provided with another magnetic confinement device. The propulsion of the invention does not need to carry the propellant, which greatly reduces the launch costs, and enables a spacecraft to advantageously have an increased orbit life over existing spacecraft systems.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: October 24, 2017
    Assignee: Beijing Institute of Spacecraft Environment Engineering
    Inventors: Zhong Yi, Chao Zhang, Lifei Meng, Haifu Jiang, Yenan Liu, Qi Xiao, Lixiang Jiang, Zhaoji Yu
  • Patent number: 9394889
    Abstract: A chemical-electromagnetic hybrid propeller with variable specific impulse. Fuel gas ejected out from a spraying tube of the chemical propeller through chemical propulsion enters an ionization chamber through a first magnetic mirror tube for ionization. The fuel gas after ionization is heated up by radio-frequency ion cyclotron waves in an ion cyclotron wave heating chamber so as to improve the kinetic energy. Then a second magnetic mirror tube is used, so that ions in the fuel gas after the ionization are heated up many times in a reciprocating manner between the magnetic mirror tubes, and ejected to generate forward propulsion force. By means of the propeller, the propulsion force and the specific impulse are greatly increased.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: July 19, 2016
    Assignee: Beijing Institute of Spacecraft Environment Engineering
    Inventors: Hua Zhao, Zhong Yi, Yuming Liu, Yenan Liu, Lifei Meng, Chao Zhang, Qi Xiao, Jipeng Sun, Yanlin Xu
  • Publication number: 20150210406
    Abstract: A fuel-free spacecraft propelling system having an open-ended outer cylinder of a propelling device and an atomic oxygen collecting device is disclosed. The latter is arranged at the forwardly-propelled front end of the outer cylinder and is hermetically connected with an RF generating device and an ion cyclotron wave heating device through a magnetic confinement device. A spiral wave discharge oxygen plasma inlet and a spiral wave discharge oxygen plasma outlet in the ion cyclotron wave heating device are respectively provided with another magnetic confinement device. The propulsion of the invention does not need to carry the propellant, which greatly reduces the launch costs, and enables a spacecraft to advantageously have an increased orbit life over existing spacecraft systems.
    Type: Application
    Filed: May 7, 2013
    Publication date: July 30, 2015
    Applicant: Beijing Institute of Spacecraft Environment Engineering
    Inventors: Zhong Yi, Chao Zhang, Lifei Meng, Haifu Jiang, Yenan Liu, Qi Xiao, Lixiang Jiang, Zhaoji Yu
  • Publication number: 20150107219
    Abstract: A chemical-electromagnetic hybrid propeller with variable specific impulse. Fuel gas ejected out from a spraying tube of the chemical propeller through chemical propulsion enters an ionization chamber through a first magnetic mirror tube for ionization. The fuel gas after ionization is heated up by radio-frequency ion cyclotron waves in an ion cyclotron wave heating chamber so as to improve the kinetic energy. Then a second magnetic mirror tube is used, so that ions in the fuel gas after the ionization are heated up many times in a reciprocating manner between the magnetic mirror tubes, and ejected to generate forward propulsion force. By means of the propeller, the propulsion force and the specific impulse are greatly increased.
    Type: Application
    Filed: May 7, 2013
    Publication date: April 23, 2015
    Applicant: Beijing Institute of Spacecraft Environment Engineering
    Inventors: Hua Zhao, Zhong Yi, Yuming Liu, Yenan Liu, Lifei Meng, Chao Zhang, Qi Xiao, Jipeng Sun, Yanlin Xu
  • Patent number: 8336392
    Abstract: Nowadays many electronic devices, such as LCD projector, computer servers, and air fresher etc. require reliable air cooling system to reduce the risk of electronics damage caused by overheating. The present invention disclosed an apparatus integrated with air flow sensor as an alarm apparatus for air flow clog detection. The major prior approach for air flow circulation failure detection is based on an indirect measurement method of temperature monitoring on surrounding environments, which method is suffering from the slow response and poor identification of real-time situation. The present invention will demonstrate the advantages by directly monitoring air flow over by indirectly monitoring the surrounding temperature as for the purpose of preventing air flow path clog.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: December 25, 2012
    Assignee: Siargo Ltd.
    Inventors: Liji Huang, Jian Luo, Changming Jiang, Yenan Liu, Wenhong Deng, Jialuo Jack Xuan, Chih-Chang Chen
  • Publication number: 20120011940
    Abstract: Nowadays many electronic devices, such as LCD projector, computer servers, and air fresher etc. require reliable air cooling system to reduce the risk of electronics damage caused by overheating. The present invention disclosed an apparatus integrated with air flow sensor as an alarm apparatus for air flow clog detection. The major prior approach for air flow circulation failure detection is based on an indirect measurement method of temperature monitoring on surrounding environments, which method is suffering from the slow response and poor identification of real-time situation. The present invention will demonstrate the advantages by directly monitoring air flow over by indirectly monitoring the surrounding temperature as for the purpose of preventing air flow path clog.
    Type: Application
    Filed: May 25, 2010
    Publication date: January 19, 2012
    Applicant: Siargo Ltd.
    Inventors: Liji Huang, Jian Luo, Changming Jiang, Yenan Liu, Wenhong Deng, Jialuo Jack Xuan, Chih-Chang Chen