Chandrayaan-2
 |
| Ready to launch Chandrayaan-2 |
Mission-
The mission was launched from Sriharikota Space Center on 22 July 2019 to the Moon by a Geosynchronous Satellite Launch Vehicle Mark III (GSLV Mk III). It consists of a lunar orbiter, lander and rover, all developed domestically.The main scientific objective is to map the location and abundance of lunar water.
News-
1] Launch of Chandrayaan-2 was originally scheduled for 14 July 2019 at 21:21 UTC (15 July 2019 2:51 IST) but was called off due to a technical snag noticed at around one hour before launch. It was launched on 22 July 2019 14:43 IST (09:13 UTC) from the Satish Dhawan Space Centre at Sriharikota in Nellore district of Andhra Pradesh.
2]Chandrayaan-2 mission called off due to technical snag in launch vehicle
Achievement-
A successful landing would make India the fourth country to achieve a soft landing on the Moon, after the space agencies of the USSR, USA and China.If successful, Chandrayaan-2 will be the first mission to soft land near the lunar south pole.
| Weight- | |||||||
|---|---|---|---|---|---|---|---|
| Launch mass | Combined (wet): 3,850 kg (8,490 lb) | ||||||
| Payload mass | Orbiter : 2,379 kg (5,245 lb) Vikram lander (wet): 1,471 kg (3,243 lb) Pragyan rover: 27 kg (60 lb) | ||||||
| Power | Orbiter: 1 kW
Vikram lander: 650 W
Pragyan rover: 50 W |
Rocket used for launching-GSLV Mk III
There are three part of chandrayaan-2
1. Orbiter
2.Rover(Pragyan)-All part of rover are developed by ISRO
3.Lander(Vikram)
1.Orbiter-
The orbiter will orbit the Moon at an altitude of 100 km (62 mi).
The orbiter carries five scientific instruments. Three of them are new,
while two others are improved versions of those flown on Chandrayaan-1. The approximate launch mass will be 2,379 kg (5,245 lb).
The Orbiter High Resolution Camera (OHRC) will conduct high-resolution
observations of the landing site prior to separation of the lander from
the orbiter.The orbiter's structure was manufactured by Hindustan Aeronautics Limited and delivered to ISRO Satellite Centre on 22 June 2015.
2.Rover
The mission's rover is called Pragyan.The rover's mass is about 27 kg (60 lb) and will operate on solar power.The rover will move on 6 wheels traversing 500 meters on the lunar surface at the rate of 1 cm per second, performing on-site chemical analysis and sending the data to the lander, which will relay it to the Earth station.For navigation, the rover uses:
- Stereoscopic camera-based 3D vision: two 1 megapixel, monochromatic NAVCAMs in front of the rover will provide the ground control team a 3D view of the surrounding terrain, and help in path-planning by generating a digital elevation model of the terrain. IIT Kanpur contributed to the development of the subsystems for light-based map generation and motion planning for the rover.
- Control and motor dynamics: the rover has a rocker-bogie suspension system and six wheels, each driven by independent brushless DC electric motors. Steering is accomplished by differential speed of the wheels or skid steering.
3.Lander(Vikram)-
The mission's lander is called Vikram named after Vikram Sarabhai (1919-1971), who is widely regarded as the father of the Indian space programme.The Vikram lander will detach from the orbiter and descend to a lunar orbit of 30 km × 100 km (19 mi × 62 mi) using its 800 N (180 lbf) liquid main engines. It will then perform a comprehensive check of all its on-board systems before attempting a soft landing, deploy the rover, and perform scientific activities for approximately 15 days. The approximate combined mass of the lander and rover is 1,471 kg (3,243 lb).
The preliminary configuration study of the lander was completed in 2013 by the Space Applications Centre (SAC) in Ahmedabad. The lander's propulsion system consists of eight 50 N (11 lbf) thrusters for attitude control and five 800 N (180 lbf) liquid main engines derived from ISRO's 440 N (99 lbf) Liquid Apogee Motor. Initially, the lander design employed four main liquid engines, but a centrally mounted engine was added to handle new requirements of having to orbit the Moon before landing. The additional engine is expected to mitigate upward draft of lunar dust during the soft landing. Vikram can safely land on slopes up to 12°.
Some associated technologies include a high resolution camera, Lander Hazard Detection Avoidance Camera (LHDAC), Lander Position Detection Camera (LPDC),an 800 N throttleable liquid main engine, attitude thrusters, Ka band radio altimeter (KaRA),Laser Inertial Reference & Accelerometer Package (LIRAP), and the software needed to run these components.Challakere in the Chitradurga district of Karnataka. ISRO created roughly 10 craters on the surface to help assess the ability of the lander's sensors to select a landing site.
Engineering models of the lander began undergoing ground and aerial tests in late October 2016, in
Prime Minister Narendra Modi watches on a screen the successful launch of Chandrayaan-2 by GSLV MkIII-M1 vehicle from Satish Dhawan Space Centre of Sriharikota, in New Delhi.
Watch a Full video-
Launch of Chandrayaan 2 by GSLV MkIII-M1 Vehicle
https://www.pscp.tv/isro/1nAKEzAVgXAGL
It is nice information
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