The remaining four 10 N thrusters are installed separately, one on each of the smaller side panels. Explore Chang'e 3 profile at Times of India for photos, videos and latest news of Chang'e 3. Scientific instruments carried onboard the vehicle included landing camera, terrain camera, lunar-based ultraviolet telescope, and extreme-ultraviolet (EUV) camera.

It is used to measure the change in velocity imparted by the engine burn to determine when the required delta-V target is reached. They include, for the first time, photos of Earth from the lander. This way, the rover is able to recognize obstacles and hazards that are automatically avoided. Due to the low backscattering rate, long APXS integrations are required for precise measurements. Two navigation cameras are installed on the mast and two Hazard Avoidance Cameras are installed on the lower front portion of the rover (rear-facing cameras are not mentioned). The CCD uses pixels 13 micrometers in size.

Whether Chang’e 3 also includes such cameras is unknown. Particles that are being released usually travel on a parabolic trajectory (or even end up in a short-lived orbit) before being re-captured or lost into space. In addition to the primary instruments, the Chang’e 3 lander also includes a series of cameras. At a sensed velocity & at an altitude of 2 Kilometers, the lander starts the Quick Adjusting Sequence of the descent, performing attitude maneuvers as it closes in on the surface. Located on the top side of the lander, the EUV will provide imagery of the Earth's ionosphere in the extreme ultraviolet region and will make investigations into space weather forecasting and ionosphere studies.

An AOTF is an electro-optical device that serves as an electronically tunable spectral bandpass filter with no moving parts. To perform a soft landing, the vehicle’s main propulsion system needs to have throttle capability. The Lander and the Rover communicated with each other via an UHF data link. The parameters of this ‘experiment’ are fairly well known – Chang’e 3 releases a known quantity of gas of known composition at a precisely defined time and location. Firstly, LADEE can look at the exospheric addition to try and study the total mass gain of the lunar exosphere caused by Chang’e 3. Chinese space officials have now released the surface imagery captured by the Chang’e-3 mothership on Dec. 15, via a video news report on CCTV. Proposed for the mission was a dual-frequency Ground Penetrating Radar operating at frequencies of 500 MHz and 60 MHz to provide a combination of deep penetrations depths and high subsurface resolution. The primary navigation system for the early phase of the descent from orbit is the lander’s inertial navigation platform with built-in redundancy.

LUT was developed by NAOC/CAS (National Astronomy Observatory of China/Chinese Academy of Sciences).

Both vehicles depend on their life giving solar panels to produce power in order to function and accomplish their scientific tasks. Using a combination of solar power generation and RTG power allows Chang’e 3 to conduct science operations during lunar day when sufficient power for instrument operation is available, and survive in lunar night using the RTG to power vehicle heaters and core systems in Lunar-Night Sleep Mode. The system uses a combination of 150 N and 10 N thrusters.

It can track Earth automatically, performing long-term imagery monitoring of scattered extreme ultraviolet radiation from the Earth's ionosphere. Previous Chang’e missions also included a range of engineering cameras to obtain images and video of important activities of the spacecraft such as solar array deployment and main engine burns.

Development of Chang’e 3 began in 2012. Chang'e 3 comprised of a Lunar Landing Vehicle (LLV) with a total mass of 3700 - 3800 kg.

The Chang’e 3 VIS/NIR Imaging Spectrometer has a field of view of 6 by 6 degrees for the visible spectrum and 3 by 3 degrees for the NIR band. Each booster is 15.33 meters long and 2.25 meters in diameter, using a single DaFY-5-1 engine which is an YF-20-type engine that provides 740.4 Kilonewtons (75,500 Kilogram-force) of sea level thrust.

A Charge-Coupled Device enhanced for observations in the ultraviolet band is used as detector. The fluid inside the pipe turns into vapor by absorbing heat from the RTG.

During their "sleep", both lander and rover will have to tolerate temperatures of -180ºC. China’s Yutu rover and the Chang’e 3 stationary lander are still alive after two years on the lunar surface, waking up last week to mark two full years spent inside Mare Imbrium having already passed their life expectancies by far. The RTG energy will be used to power the scientific payload of seven instruments and cameras. The lunar night is expected to begin on Dec. 26, will last for about two weeks. Calibration is accomplished by measuring a calibration sample that is installed on the rover and is of a known composition following extensive ground testing with lab-equipment and the flight unit APXS. It has a total mass of 120 kg and can carry up to 20 kg payload. Chang’e-3 snapped this part of a panorama on December 17, 2013, three days after landing on the moon's lava-filled Mare Imbrium.

The Chang’e 3 rover can tolerate slopes of up to 20 degrees and drive over obstacles of up to 20 centimeters.

Flying horizontally, the lander autonomously finds a flat spot for landing, avoiding any obstacles that can be detected using its systems.

The solar-powered spacecraft operates during the lunar daytime (which lasts around 14 Earth days) and communicates via X- and S-band with ground stations in China, at Kashi in the northwest and and Jiamusi in the northeast. Yutu has “experienced a mechanical control abnormality” in a new report by China’s official government newspaper, The People’s Daily. Also, the spacecraft can be used to study distribution processes to examine how quickly the combustion products are transported within the exosphere to learn more about potential transport processes and study the eventual loss of the gases and dust particles. The boosters burn for 125 seconds after which they are separated, consuming a total of 37,746kg of propellants.

- Yutu was traversing southwards from the landing site as the incident occurred just days ago – about six weeks into its planned 3 month moon roving expedition.

Details on the burn procedure have not been disclosed. It can operate between -25 and +55ºC and is able to survive between -40 and +75ºC. >>>LADEE Science Overview.

The camera head is installed on the top deck of Chang’e 3 using a Pan and Tilt Targeting Mechanism. The system uses a combination of 150-Newton and 10-Newton thrusters.

The team used digital mapping data from Chang'e 2 — a lunar probe that orbited the moon for eight months in 2010-2011 — to count craters and the ground-penetrating radar readings taken by Yutu 2 to analyze regolith growth in Von Kármán crater to calculate its age. Chang’e 3 makes a fully autonomous landing on the lunar surface without receiving any navigation data from Earth.
Launch vehicle: CZ-3B.

Fresh caters with sharp edges are a threat to the lander. Chang’e 3 uses a seven-step landing sequence taking 700 seconds from the ignition of its main engine until touchdown at Sinus Iridum. The objective is to soft-land on the moon's surface and deploy an unmanned Lunar Rover to explore the areas surrounding the landing site. Its main systems are an optical system and an imagery receiving and processing electric box. The Chang’e-3 lunar lander and rover beamed back portraits of one another snapped from the moon’s surface – that also proudly displayed the bright red Chinese national flag shining atop on the Jade Rabbit as it stands on the moon's surface.

Thermocouples make use of the Seebeck Effect, converting thermal to electric energy. Once in its hovering segment, about 100 m above the lunar surface, the lander will start acquiring images using its descent camera. The plasmasphere is located within Earth’s magnetosphere and consists of low-energy (low-temperature) plasma located above the ionosphere.

Determining the sub-surface structure to these depths allows studies of the geologic and thermal history of the Moon and assessments of the quantity of potential resources for future lunar exploration. Using the relatively high-thrust 150 N engines for attitude control provides quick response capability which is required for fast attitude adjustments during the landing phase (Ref. Survival of APXS during lunar night is ensured by a radioisotope heater unit.

Just like the Mars rovers used by NASA, China’s Chang’e 3 rover uses a series of engineering cameras that are installed on strategic positions on the rover vehicle. The mission is the first soft-landing on the moon since 1976 and made China …

Openness is a strength and not a weakness. The landing site was chosen based on high resolution imagery and ranging data provided by the Chang’e 1 and 2 spacecraft.

Once in its hovering segment, about 100 meters above the surface, the lander will start acquiring images using its descent camera.

Programme: CLEP. Live telemetry coverage of all downrange events is provided by Chinese ground stations and tracking ships that are deployed in the Pacific right beneath the launch ground track.

The mission is headed by SASTIND (State Administration of Science, Technology and Industry for National Defence); the primary contractor for the probe is CAST (China Academy of Space Technology) of the China Aerospace Science & Technology Corporation (CASC). At some point before landing, Chang’e 3 performs an orbit adjustment maneuver that places the vehicle in an orbit of 15 by 100 Kilometers around the Moon with the periselene location carefully position to line up with the landing site on December 14 for the ambitious landing maneuver. The active thermal control system consists of resistive electric heaters that are actuated using thermostat data.
The radioactive Pu-238 decays by emitting alpha-particles which generate heat. Two solar panels are installed on the vehicle to deploy in flight & after landing. Multi-functional and single-functional secondary struts are attached to the landing legs to provide additional attach points to the lander body. After snoozing through the lunar night, with no sunlight to power its solar panels, the rover woke up and resumed activities on Sept. 10 at 11:54 p.m. EDT (0354 GMT on Sept. 11) with the lander following at 5:15 p.m. EDT (2115 GMT) on Sept. 11. Overall, the stage is 12.38 meters long with a reduced diameter of 3.0 meters.

Data from Chang’e 1 and Chang’e 2 was used to pick a landing spot for Chang’e 3 which is the first Chinese mission to the lunar surface. 2). Please refresh the page and try again. The lander is powered by solar arrays, augmented by a RTG (Radioisotope Thermoelectric Generator) to provide power during the lunar nights. The instrument uses a multi-membrane optical system and a EUV photon counter sensor as detector.

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