Is this flight software?

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

Launch azimuth

Inertial launch azimuth from site latitude to target inclination + Earth-rotation boost.

SIDUS educational calculator. Category orbital. Tags: launch, mission-design, operations, orbital, range. Pure SI. Not flight software.

cos i = cos φ · sin β · v_rot = ω R cos φ

Range azimuth & Earth boost

Fundamentals of Astrodynamics and Applications (David A. Vallado): Standard reference for two-body, Lambert, maneuvers, and J2. Equations implemented independently in SIDUS.
AeroVia Aerospace Tools (AeroVia (public calculators)): Public catalog of ISA, dynamic pressure, launch azimuth, RF link, SSO-class tools (domain demand reference).
Orbital Mechanics for Engineering Students (Howard D. Curtis): Textbook derivations for Hohmann, vis-viva, rocket equation, elements.

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