Mars+Polar+Lander





Mars Polar Lander
. Mars Polar Lander este unul dintre vehiculele de explorare climei lui Marte Launched on 3 January 1999, 23 days after its partner, the [|//Mars Climate Orbiter//], the mission ended in failure with the loss of both craft in separate incidents. Lansat la 3 ianuarie 1999, misiunea sa încheiat cu un eşec. After attempts to re-establish communications failed following entry into Mars atmosphere, the lander was declared lost, with the presumption that the vehicle did not survive the descent. După ce încearcă să restabilească, au eşuat după intrarea în atmosfera lui Marte, Lander a fost declarat pierdut, pentru că vehiculul nu a supravieţuit coborâre. Obiectivele ştiinţifice Conveyed on the Mars Polar Lander was the [|//Deep Space 2//] surface-penetrator mission to [|Mars]. . The two missions were designed to study the Martian [|weather], [|climate] , [|water] and [|carbon dioxide] concentrations, in order to understand the reservoirs, behavior, and [|atmospheric] role of volatiles and to search for evidence of long-term and episodic climate changes. Două misiuni au fost concepute pentru a studia __vreme__ marţiană, __clima,__  apa şi concentraţiile __de dioxid de carbon.__ __Landre trebuia sa ajunga pe Marte la polul sud unde trebuia sa examineze dioxidul de carbon inghetat ( __73 ° S şi 76 ° S). The lander was to touch down on the southern polar layered terrain, between 73°S and 76°S in the region, [|Planum Australe] less than 1,000 km from the south pole, near the edge of the carbon dioxide ice cap in Mars' late southern spring. These goals were to be accomplished using a number of scientific instruments, including a Mars Volatiles and Climate Surveyor (MVACS) instrument package which was composed of a robotic arm and attached camera, mast-mounted surface stereo imager and [|meteorology] package, and a gas analyzer.  Aceste obiective urmau să fie realizate folosind un număr de instrumente ştiinţifice compuse dintr-un braţ robotic şi anexat aparat de fotografiat, catarg, montate de suprafaţă marţiană.

Inaltime:1.06m Latime:3.6m

The Mars Polar Lander consisted of a hexagonal base composed of aluminum honeycomb with composite graphite epoxy face sheets supported on three aluminum landing legs. The spacecraft was three-axis stabilized during cruise using star cameras and sun sensors in conjunction with [|inertial measurement units]. Nava __Phoenix__ a aterizat cu succes la 25 mai 2008, care transportă unele instrumente derivate din cele de pe Marte Polar Lander. The failure of the Mars Polar Lander took place two and a half months after the loss of the Mars Climate Orbiter. Eşecul Polar Mars Lander a avut loc dupa două luni şi jumătate după pierderea __Climate Orbiter Marte.__ Inadequate funding and poor management have been cited as underlying causes of the failures. [|[ 4]] According to Thomas Young, chairman of the Mars Program Independent Assessment Team, the program "was under funded by at least 30%." [|[ 5]]

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