Exhibit 12 Draft MTN Proposal Mission Trajectory Instructions 4-8-26.pdf

This is an exhibit from a Draft Request for Proposals (DRFP) that specifies the Mission Trajectory Data Package requirements for proposals submitted in response to DRFP No. 80GSFC26R0011.

The document outlines two primary categories of required proposal data. The Trajectory Information section mandates submission of launch vehicle specifications, launch date, C3 energy, and departure launch azimuth; final orbital characteristics at Mars; binary SPICE SPK files or equivalent data for the beginning, middle, and end of the launch window; solar conjunction and eclipse duration information; assumptions regarding finite versus impulsive maneuver implementations; aerobraking assumptions; and a comprehensive Delta-V budget. The Spacecraft Data section requires detailed specifications including wet mass and propellant mass; chemical and/or electric engine parameters such as types, quantity, duty cycles, propellants, specific impulse (Isp), thrust and power characteristics with supporting equations, and mass flow rate calculations; thrust vectors for each planned maneuver; tank capacities with propellant margin allocations; power capability at 1 AU with power margin amounts; Technology Readiness Levels and throughput capabilities for all engines, solar arrays, and power processing electronics; and the momentum control methodology to be employed during quiescent cruise phases and maneuvers.