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[NASA] DART

4,793 Pakdaaircraftindustries  17 days ago

NASA:

DART was the first-ever mission dedicated to investigating and demonstrating one method of asteroid deflection by changing an asteroid’s motion in space through kinetic impact.

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The Double Asteroid Redirection Test (DART) was a NASA space mission aimed at testing a method of planetary defense against near-Earth objects (NEOs).[4][5] It was designed to assess how much a spacecraft impact deflects an asteroid through its transfer of momentum when hitting the asteroid head-on.[6] The selected target asteroid, Dimorphos, is a minor-planet moon of the asteroid Didymos; neither asteroid poses an impact threat to Earth, but their joint characteristics made them an ideal benchmarking target. Launched on 24 November 2021, the DART spacecraft successfully collided with Dimorphos on 26 September 2022 at 23:14 UTC about 11 million kilometers (6.8 million miles; 0.074 astronomical units; 29 lunar distances) from Earth. The collision shortened Dimorphos' orbit by 32 minutes, greatly in excess of the pre-defined success threshold of 73 seconds.[7][8][9] DART's success in deflecting Dimorphos was due to the momentum transfer associated with the recoil of the ejected debris, which was substantially larger than that caused by the impact itself.

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General Characteristics

  • Created On Android
  • Wingspan 39.0ft (11.9m)
  • Length 17.2ft (5.2m)
  • Height 8.8ft (2.7m)
  • Empty Weight 3,572lbs (1,620kg)
  • Loaded Weight 4,514lbs (2,047kg)

Performance

  • Power/Weight Ratio 0.746
  • Wing Loading 48.6lbs/ft2 (237.4kg/m2)
  • Wing Area 92.8ft2 (8.6m2)
  • Drag Points 1656

Parts

  • Number of Parts 49
  • Control Surfaces 5
  • Performance Cost 160