Which frame were the space shuttle's orbital insertion attitude targets specified in?
The shuttle had three frame choices: LVLH, INRTL, and REF (an inertial frame whose attitude the crew could lock in by pressing a button).
For attitude display, LVLH was selected early in launch. But would this be the same frame the closed-loop orbital insertion targets would have been specified in?
Since LVLH depends on the velocity vectors, whose direction is still changing during orbital insertion, it seems LVLH would be a poor choice to specify the attitude targets...