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Space Shuttle Avionics: Difference between revisions
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→REL NAV (SPEC 33)
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The REL NAV display is used for rendezvous and proximity operations to snow the relative position to a rendezvous target. It's a fairly complicated display which requires some knowledge on the theory of space navigation and state vector management to properly understand and operate. | The REL NAV display is used for rendezvous and proximity operations to snow the relative position to a rendezvous target. It's a fairly complicated display which requires some knowledge on the theory of space navigation and state vector management to properly understand and operate. | ||
Assuming | Assuming ideal navigation, only the column of numbers below SV SEL are important, where range, approach rate, angular orientation, displacement along the angular momentum axis of the target and approach rate along the angular momentum axis (assumed to be the desired docking direction) is shown. | ||
The rest of the display is used if the state vectors of Shuttle and target are not perfectly known and have errors. In this case, radar ranging (RR) can be used to directly measure distance and approach rate and various filters based on other sensors can be utilized to improve upon the computed state vector. | The rest of the display is used if the state vectors of Shuttle and target are not perfectly known and have errors. In this case, radar ranging (RR) can be used to directly measure distance and approach rate and various filters based on other sensors can be utilized to improve upon the computed state vector. | ||