Will the Insight cruise stage do a broken-plane maneuver at TCM-2 (or 3), or does the Centaur upper stage have plenty of performance (as I suspect) to directly insert this small s/c into the necessary inclination?
Earth and Mars orbit the sun in slightly different inclinations. A "broken-plane maneuver" is an inclination change burn midway through the Hohmann transfer orbit, the minimum ∆V is at the mid-point of the Earth-Mars transfer.
I'm asking if the Atlas V's Centaur upper stage will inject the s/c (space craft) directly into the Martian heliocentric inclination, thereby making the "broken-plane maneuver" unnecessary.
The official 2016 MARS INSIGHT MISSION DESIGN AND NAVIGATION doc does not explicitly answer my question.
Orbital inclination change: https://en.wikipedia.org/wiki/Orbital_inclination_change