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The theory of projectile motion is very useful for players of several sports to improve their performance. For example, a javelin thrower needs to throw their javelin in such a way that it travels as far as possible. The javelin thrower takes a short run-up to increase the initial speed of the javelin. The range of a projectile is at its maximum at a 45° angle so javelin throwers try to angle their throw as close to 45° as possible.
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A rocket's velocity in the presence of a gravitational field is decreased by the amount of force exerted by Earth's gravitational field, which opposes the motion of the rocket. If we consider thrust, that is, the force exerted on a rocket by the exhaust gases, then a rocket's thrust is greater in outer space than in the atmosphere or on a launch pad. In fact, gases are easier to expel in a vacuum.
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El presente y futuro programa de exploración lunar de China

Chunlai Li1, Chi Wang2, Yong Wei3

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Área de la Ciencia:

  • Ciencia y exploración lunares
  • Misiones espaciales robóticas
  • Ciencias planetarias

Sus antecedentes:

  • El siglo XXI ha visto un aumento en las actividades de exploración lunar.
  • El Programa de Exploración Lunar de China (CLEP) ha desplegado misiones robóticas prominentes.
  • Más de una docena de sondas han llevado a cabo la exploración científica de la Luna.

Objetivo del estudio:

  • Revisar los objetivos tecnológicos y científicos de las misiones Chang'E.
  • Para describir los logros de las misiones completadas y planificadas de Chang'E.
  • Presentar la visión y estrategia a largo plazo del Programa de Exploración Lunar de China.

Principales métodos:

  • Revisión de los datos publicados y de los informes de las misiones.
  • Análisis de los avances tecnológicos en la exploración lunar.
  • Evaluación de los resultados científicos de las misiones lunares.

Principales resultados:

  • Las misiones Chang'E han logrado importantes hitos tecnológicos y científicos.
  • Cuatro misiones completadas y cuatro planeadas demuestran una estrategia de exploración progresiva.
  • Los planes a largo plazo de CLEP hacen hincapié en la adaptabilidad y la colaboración internacional.

Conclusiones:

  • El Programa de Exploración Lunar de China es un motor clave de la ciencia lunar moderna.
  • Las misiones Chang'E muestran un enfoque robusto y en evolución para la exploración espacial.
  • La cooperación internacional es fundamental para el futuro de la exploración lunar bajo CLEP.