Nobody in their right mind would gratuitously use a mechanical relay in a rocket motor control system if a solid state alternative was feasible. Mechanical relays are just too heavy and too sensitive to high amplitude vibration.
Search Google for: automotive high side switch
and you'll find a large number of devices designed for switching difficult loads (e.g solonoids, inductive loads, motors, filament bulbs etc.) from logic level control signals, with various load status and fault monitoring capabilities. N.B. you need to check their voltage ratings as although many will be suitable for 24V (nom.) systems, some may only be intended for 12V systems.
If you want more specific advice, you'll need to tell us the DC resistance of the solonoid (or nominal operating current as we have the operating voltage of 24V), and how fast you need to turn it on and off.