Mission extension using sensitive trajectories and autonomous control
This presentation is the property of its rightful owner.
Sponsored Links
1 / 4

Mission Extension Using Sensitive Trajectories and Autonomous Control PowerPoint PPT Presentation


  • 41 Views
  • Uploaded on
  • Presentation posted in: General

Mission Extension Using Sensitive Trajectories and Autonomous Control. Edward Belbruno Princeton University and Innovative Orbital Design, Inc. AISRP PI MEETING 2005 April 3-6, NASA Ames.

Download Presentation

Mission Extension Using Sensitive Trajectories and Autonomous Control

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Mission extension using sensitive trajectories and autonomous control

Mission Extension Using Sensitive Trajectories and Autonomous Control

Edward Belbruno

Princeton University and Innovative Orbital Design, Inc.

AISRP PI MEETING 2005

April 3-6, NASA Ames


Mission extension using sensitive trajectories and autonomous control

Goal- Enable spacecraft to linger about a planet for extended time spans in a cost effective manner, and autonomously

  • Data collection is maximized for a given mission

  • Accomplish goal by using new sensitive/chaotic trajectories

  • Dynamic sensitivity saves fuel -> do more with less

  • Theory is weak stability boundary (WSB) theory developed by EB, 87-90

  • Idea: Transition region about a planet, eg Moon, between capture and escape –>chaotic weak capture

  • Can achieve ballistic lunar capture transfers(~surfercatchingwave)


Operational demonstrations

Operational Demonstrations

  • Used in 1991 to salvage Japan’s Hiten and bring to Moon

    -> First application of chaos to space travel

    -> New 90 day ballistic capture transfer

  • Used in 2004 to get ESA’s SMART-1 captured into lunar orbit

  • Ideas played a key role in 1998 salvage of Hughes HGS-1 using Moon


Approach

Approach

  • Two key applications:

    a. Motion about planet in WSB region

    b. Newly discovered Quasi-stationary motion

  • Focus on a. using Moon

  • WSB transfer to Moon -> ballistic capture in WSB region

  • Can maintain weak capture for tiny DeltaV

  • Demonstrated in February’s work, DeltaV is very small

    ~ 20 m/s for 3-4 months

  • Smaller the DeltaV, more unstable/complicated the motion

    Idea- Reduce DeltaV, require more frequent control

  • Optimize -> will yield control algorithm that’s autonomous


  • Login