Kounotori

Kounotori, also known as H-II Transfer Vehicle (HTV), is a spacecraft developed by Japan Aerospace Exploration Agency (JAXA) to resupply the International Space Station (ISS). The Kounotori spacecraft is named after the Japanese word for "white stork," a bird known for delivering gifts. The development of Kounotori is a collaboration between JAXA, Mitsubishi Heavy Industries, and NEC Corporation. The spacecraft is launched into space using the H-IIA rocket from the Tanegashima Space Centre.

Introduction

The Kounotori spacecraft is designed to carry cargo, including food, water, and scientific equipment, to the ISS. The spacecraft is equipped with a Remote Manipulator System (RMS) arm, which is used to transfer cargo to and from the ISS. The Kounotori spacecraft is also capable of carrying out scientific experiments, such as those conducted by the European Space Agency (ESA) and the National Aeronautics and Space Administration (NASA). The development of Kounotori is part of JAXA's efforts to contribute to the ISS program, which also involves the Canadian Space Agency (CSA) and the Russian Federal Space Agency (Roscosmos).

Design_and_Development

The design and development of Kounotori involved a team of engineers and scientists from JAXA, Mitsubishi Heavy Industries, and NEC Corporation. The spacecraft is equipped with a Service Module (SM) and a Pressurized Module (PM), which provide the necessary systems for propulsion, power, and communication. The Kounotori spacecraft is also equipped with a Navigation System (NS) and a Communication System (CS), which enable it to navigate and communicate with the ISS. The development of Kounotori was influenced by the Space Shuttle program and the Apollo program, which were conducted by NASA in the United States. The Kounotori spacecraft is also similar to the Automated Transfer Vehicle (ATV) developed by the European Space Agency (ESA).

Operational_History

The first Kounotori spacecraft, HTV-1, was launched on September 10, 2009, from the Tanegashima Space Centre using the H-IIA rocket. The spacecraft successfully docked with the ISS on September 17, 2009, and remained in orbit for 52 days. Since then, several Kounotori spacecraft have been launched, including HTV-2, HTV-3, HTV-4, HTV-5, HTV-6, and HTV-7. The Kounotori spacecraft have been used to transport cargo to the ISS, including food, water, and scientific equipment. The spacecraft have also been used to conduct scientific experiments, such as those conducted by the NASA Johnson Space Center and the European Astronaut Centre.

Technical_Specifications

The Kounotori spacecraft has a length of 9.2 meters and a diameter of 4.4 meters. The spacecraft has a mass of approximately 10.5 tons and is equipped with a Solar Array (SA) that provides 1.9 kilowatts of power. The Kounotori spacecraft is also equipped with a Propulsion System (PS) that uses Hydrazine fuel and provides a thrust of 500 Newtons. The spacecraft has a communication system that uses S-Band and Ku-Band frequencies to communicate with the ISS and ground stations, including the Goldstone Deep Space Communications Complex and the Madrid Deep Space Communication Complex.

Missions

The Kounotori spacecraft have been used for several missions, including the HTV-1 mission, which was launched on September 10, 2009, and the HTV-2 mission, which was launched on January 22, 2011. The HTV-3 mission was launched on July 21, 2012, and the HTV-4 mission was launched on August 3, 2013. The HTV-5 mission was launched on August 19, 2015, and the HTV-6 mission was launched on December 9, 2016. The HTV-7 mission was launched on September 22, 2018, and the HTV-8 mission was launched on September 24, 2019. The Kounotori spacecraft have been used to transport cargo to the ISS, including food, water, and scientific equipment, and have been used to conduct scientific experiments, such as those conducted by the NASA Ames Research Center and the European Space Research and Technology Centre. The Kounotori spacecraft have also been used to support the Expedition 20 and Expedition 21 missions to the ISS, which involved astronauts from the United States, Russia, Canada, and Japan, including NASA astronaut Timothy Kopra and JAXA astronaut Soichi Noguchi.