Decryption Shenzhou eleven related technical details: LED light source, the way to fly"

At 7:30 on October 17th, Shenzhou eleven manned spacecraft carrying astronauts Jing Haipeng and Chen Dongfei to the vastness of the universe, will be waiting with the space in the space of the Royal Palace of space rendezvous and docking laboratory two.

October 17th, Shenzhou eleven manned mission astronauts Jing Haipeng and Chen Dong expedition.

Shenzhou eleven flight what are the characteristics? "Shenzhou" in the end "God" in where? In this regard, the relevant experts told reporters about the Shenzhou eleven related to the details of the 11.

One detail: fly higher - 393 km orbit height docking and operation

Shenzhou eleven fully inherited the Shenzhou No. ten state of technology, and in order to meet the requirements of the task and a number of technical improvements.

"To meet the mission requirements, adjust the orbit control strategy and flight procedures, the Shenzhou eleven spacecraft to the mission rendezvous orbit and return orbit altitude from 343 kilometers to 393 kilometers requirements. Said Wu Ping, deputy director of the China Manned Space Engineering office.

Shenzhou ten docking with Tiangong-1, the orbital height is 343 km. Shenzhou eleven and the temple of heaven, the height of the orbit of the two docking is about 393 km, higher than the past 50 km, why should be higher than the 50 km? Aerospace Science and Technology Group five GNC system command Luo Guqing said, mainly to the third step of China Manned Space Development Strategy of "three steps" -- the construction of a space station in preparation for this, and the future of the space station's orbit flight height is basically the same, but also closer to the future space station requirements.

Details two: longer - a 33 day journey

The Shenzhou eleven spacecraft into orbit after two days to complete the independent flight, combination with Tiangong two automatic docking form, complete the combination of 30 days after the mid dwell, and return to Inner Mongolia Tiangong two separation, the main landing field within a day, the Shenzhou eleven mission ended. In the space time is long, how to protect astronaut space work life and the ability to carry out the task, how to improve the reliability of the spacecraft?

Shenzhou eleven technical improvements, a very important innovation highlights, is equipped with a wide beam relay communications terminal equipment.

"In order to further improve the safety and reliability, with a new wide beam relay communication terminal equipment, and significantly expand the coverage, enhance the spacecraft attitude during the rapid change of world communications capabilities, so as to improve the reliability and safety of spacecraft astronauts. Wu Ping said.

Details three: upgrade the optical imaging sensor - to complete the difficult space kiss"

In order to verify the future of space technology to meet the requirements of the future space station rendezvous measurement equipment long life requirements, the Shenzhou eleven rendezvous measurement equipment has been upgraded. Wu Ping said.

Temple two and Shenzhou eleven rendezvous and docking, is an important step in the construction of the home of space, especially the two from the distance of 120 meters to the final completion of the docking stage, the greatest difficulty, the highest risk. In order to let them in at 8 times the bullet speed precision docking together, technical staff realized the upgrade of optical imaging sensor.

The Shenzhou eleven rendezvous and docking of the optical imaging sensor chief designer Gong Dezhu said that space in the sunlight intensity is three to five times of the earth, it is easy to "bright blind" aircraft "eyes", is like driving by the opposite Akira headlights to the car, take some time to restore vision, so in the past to rendezvous and docking select the appropriate time for the light.

Compared with Tiangong-1 on the use of a product, an upgraded version of the sun sensor stray light suppression, target recognition sensitivity are significantly improved, even by eyes, visual acuity recovery time can be shortened from ten seconds to hundreds of milliseconds. As a result, the Shenzhou eleven and the temple of heaven and earth can achieve quasi all-weather real-time docking, can protect the emergency repair and supply of spacecraft or astronauts emergency rescue two.

Details of the four: the first assessment of the astronauts in the interim capacity

The purpose of this mission is to further improve the function of the manned spacecraft to conduct a comprehensive verification, providing important technical support for subsequent manned missions. In addition, through a number of in orbit testing, the spacecraft will further verify the design function, access and accumulation of manned flight test data related to the environment. "Shenzhou eleven spacecraft chief designer Zhang Bainan said.

In the space lab mission, docking orbit and return orbit height increased by 50 km, the Shenzhou eleven mission will be the first assessment verification stage of rendezvous and docking space station and manned spacecraft return technology, will be the first assessment of the medium-term presence of astronauts, verified by astronauts reside, for astronauts to space station in orbit long lay stage assessment base.

Details five: lighting equipment, the way to fly"

Shenzhou eleven in the vastness of the universe in the process of traveling, periodically through the earth's shadow zone, this time will go through a long period of darkness, the impact of the smooth completion of the mission on orbit. The spacecraft cabin lighting equipment and lighting equipment docking, not only provides cabin lighting for astronauts to live and work, but also for manned spacecraft and space laboratory in rendezvous and docking shadow zone provides auxiliary lighting for camera.

"In space, if the direct use of incandescent lamps, energy-saving lamps in life, it is estimated that the spacecraft did not use a few days on the flameout. What light source is used on the spacecraft? The Shenzhou eleven spacecraft in the cabin lighting equipment (close range floodlight) and rendezvous and docking lighting equipment