極低地球軌道科學探索、系統開發及資源應用(4/5)

Project Details

Description

Very Low Earth Orbits (VLEOs) are defined as having altitudes less than 400 km.VLEO spacecraft are of great interest due to the potential for lower launch costs,low latency, enhanced Earth observation resolution, and sustained in-situobservations in an undersampled atmospheric region. However, severalchallenges exist to the utilization of VELO spacecraft, many of which are closelyrelated to the upper atmosphere in this region. Enhanced drag results in shorterspacecraft lifetimes and increased heating. Tracking and telemetry arecomplicated by the higher velocities combined with uncertainties in orbitpropagation drag models. The dominant atmospheric constituent at thesealtitudes is atomic oxygen, which is a corrosive oxidization agent acting uponspacecraft materials.
StatusFinished
Effective start/end date1/02/2231/01/23

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 12 - Responsible Consumption and Production
  • SDG 13 - Climate Action
  • SDG 17 - Partnerships for the Goals

Keywords

  • Very Low Earth Orbit
  • ionosphere
  • thermosphere
  • small spacecraft
  • drag
  • orbit propagation
  • remote sensing

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