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Visual Problems of Space Travel (1962) / Chapter Skim
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Space Flight Missions
Pages 1-2

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From page 1...
... Space Flight Missions "In the immediately foreseeable future we can anticipate three basic kinds of manned space flight missions. The first of these will be orbital flight around the earth, the second will be a lunar flight, and the third will be interplanetary flight within our own solar system." "Orbital Flight "Orbital flights around the earth will be at altitudes which range from approximately 100 miles to approximately 500 miles.
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From page 2...
... [Thus, external visual navigation will not play a dominant role other than as a check on the automatic navigational equipment.] The time when sufficient energy will be available for radical changes of flight path en route is a long way off and problems related to this kind of flight will not be considered." Another extremely important phase of manned space flight is that of accomplishing landings on surfaces other than earth.
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Key Terms

  • space flight
  • flight path
  • manned space
  • immediately foreseeable
  • flight missions

  • planetary flight
  • external visual
  • orbital flight
  • lunar flight
  • vehicle flight

  • minimum altitude
  • dominant role
  • achieving successful
  • radical changes
  • editorial changes

  • gravitational field
  • draws especially
  • alien planets
  • especially heavily
  • matic navigational

  • launching vehicles
  • continuous application
  • accomplishing landings
  • preselected routes
  • own orbit

  • sufficient energy
  • previous report
  • basic kinds
  • remaining text
  • successful landings


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