Is this flight software?

No. SIDUS models are educational reimplementations. Cross-check before any flight decision.

Ion thruster efficiency

η = T²/(2 ṁ P), ve = T/ṁ, and optional vehicle α = P/m_dry.

SIDUS educational calculator. Category propulsion. Tags: engines, propulsion. Pure SI. Not flight software.

η = T² / (2 ṁ P) α = P/m_dry

Ion thruster efficiency and α

NASA Glenn Research Center: Beginner’s Guide to Aeronautics (NASA GRC): Ideal rocket equation, specific impulse, thrust equation, dynamic pressure education pages.
Orbital Mechanics for Engineering Students (Howard D. Curtis): Textbook derivations for Hohmann, vis-viva, rocket equation, elements.
Fundamentals of Electric Propulsion: Ion and Hall Thrusters (NASA / JPL DESCANSO (Goebel, Katz, Mikellides)): JPL Space Science and Technology series. Educational ion/Hall models in SIDUS are independent SI sketches, not a thruster map.

Read /llms.txt or call https://sidus.tools/api/mcp. Open the interactive page for live SI inputs.