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China to send its first unmanned spacecraft Tianwen-1 to Mars

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On July 23rd, China will launch the Tianwen-1 mission to Mars. It will be China’s first mission to the Red Planet and the first time China will attempt to put something into orbit around and land something on another planet.

There are 3 mission ready to launch from 3 different Space Organization

China- Tianwen-1

USA- Perseverance Rover

UAE- Emirates Mars Mission

About the Mission

Launch Time: 9:30 AM IST

Launch Site: Wenchang, China

Launch Vehicle:  Long March 5

Tianwen-1

CHINA'S TIANWEN-1 MARS ROVER
CHINA’S TIANWEN-1 MARS ROVER (Image Credit: Xinhau)

Named after the ancient Chinese poem ‘Questions to Heaven’, the Tianwen-1, an all-in-one orbiter, lander and rover will be sent in search on Martian surface for water, ice, investigate soil characteristics, and study the atmosphere, and other objectives.

The Tianwen-1 mission will lift off on a Long March 5 rocket, Launch window is open for 5 days from 20 – 25 July.

The Tianwen-1 mission will carry 13 payloads (seven orbiters and six rovers with attached rover) developed by China Aerospace Science and Technology Coropration(CASC) and managed by National Space Science Center(NSSC) that will explore the planet.

The lander portion of spacecraft will use a parachute, retrorockets, and an airbag to land on Martian surface. After landing successfully landing then the lander will release the rover.

The lander is built to last at least 90 Martian days, called Sols, once on the surface. The orbiter will be able to function for more than one Earth year.

Mars Orbiter

Spacecraft component: Orbiter

Orbital insertion: 11 – 24 February 2021

Mars Lander

Spacecraft component: Lander

Landing Date: 23 April 2021(proposed)

Landing Site: Utopia Planitia

Mars Rover

Spacecraft component: Rover

Landing Date: After Lander successfully landed

Landing Site: Utopia Planitia

Launch Vehicle

Long March 5
Long March 5 (Image Credit:

Name: Long March 5

Height: 186.9 ft

Diameter: 16ft

Payload Capacity

  • 25,000 kg to LEO
  • 14,000 kg to GTO
  • 8,800 kg to TLI
  • 6,000 kg to GEO
  • 15,000 kg to SSO at 700km and 6,700 kg at 2000km
  • 13,000 kg to MTO
  • 6,000 kg to TMI

Launch History

  • Total Launches: 4
  • Success: 3
  • Failure: 1

Boosters

  • Height: 91ft
  • Diameter: 11ft
  • No.of boosters: 4
  • Gross mass: 155,700 kg
  • Propellant mass: 144,000 kg
  • Engine: 2xYF-100
  • Total thrust: 9,600 kN
  • Burn time: 180 seconds
  • Fuel: RP-1/LOX

First Stage

  • Height: 104 ft
  • Diameter: 16ft
  • Gross mass: 175,600 kg
  • Propellant mass: 158,300 kg
  • Engine: 2 x YF-77
  • Total thrust: sea-level-1,020 kN, space-1,400 kN
  • Burn time: 480 seconds
  • Fuel: LH2/LOX

Second Stage

  • Height: 35 ft
  • Diameter: 16 ft
  • Launch mass: 22,200 kg
  • Engines: 2 x YF-75D
  • Thrust: 176.52 kN
  • Burn Time: 700 seconds
  • Fuel: LH / LOX

Third Stage

  • Diameter: 12ft
  • Engines: 2 x YF-50D
  • Thrust: 6.5 kN
  • Burn Time: 1,105 seconds
  • Fuel: N204 / UDMH

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