Release note

v0.25.42 Release Notes

Rocket Science

Features:

  • added a persistent flight history with pagination, end-of-mission records, and entries for removed spacecraft;
  • added spacecraft decommissioning and splashed-state tracking;
  • added reversible assembly animations and animation previews;
  • added physics interpolation between animation states;
  • save files can now be moved freely between save slot folders;
  • custom saves now load directly into flight;
  • added dynamic time zone changes during flight below 20 km and use of UTC above;
  • added flight journal entries for docking and undocking, atmosphere entry and exit, orbital milestones, part and fairing jettison, parachute events, primary-body changes, propellant depletion, and splashdowns;
  • added launch-from-anywhere support for surface mods;
  • TAA is now improved and enabled by default during the flight instead of SMAA (less flickering).

New content:

  • added the first iteration of cloth-simulated parachute visuals;
  • improved grammar and localization across tutorials and quests;
  • added drogue chutes and configured pilot chutes.

Changes:

  • improved the accuracy and stability of elliptic-orbit calculations, especially for highly eccentric and near-parabolic orbits;
  • prevented precision loss in hyperbolic trajectories near their asymptotes;
  • corrected open-orbit timing so hyperbolic and parabolic trajectories are no longer treated as periodic;
  • corrected parabolic calculations for large negative mean anomalies;
  • corrected hyperbolic targeting tangents and invalid intersection handling;
  • corrected targeting subdivision angle wrapping and sphere-of-influence limits for combined orbit sections;
  • reworked thermal radiation to use solvers and improved atmospheric conduction;
  • reworked the flight simulation command, spacecraft group, joint storage, and part-state systems;
  • improved flight journal presentation and pagination;
  • improved UI sprite clarity;
  • optimized cable simulation and proximity calculations.

Part changes:

  • improved mirror symmetry, snapping, and offset behavior;
  • improved wheel and landing-gear placement and rotation;
  • reworked joint offsets to use baked configurations and IDs;
  • improved parachute deployment, loading, decoupling, attachment, and cloth baking;
  • improved reversible part animations and staging integration.

Fixes:

  • disappearing sphere-of-influence exits when editing maneuvers while reducing speed;
  • incorrect atmosphere-exit altitude data and occasionally broken initial orbit updates;
  • parabolic true-anomaly and mean-anomaly conversions receiving eccentricity instead of the actual anomaly;
  • parabolic orbits being misclassified near escape velocity because of floating-point rounding;
  • incorrect orientation when reconstructing inclined near-circular orbits from position and velocity;
  • inaccurate elliptic and hyperbolic anomaly calculations near zero mean anomaly, especially close to parabolic eccentricities;
  • incorrect midpoint and half-size calculations for orbit sections crossing the zero-angle boundary;
  • incorrect wrapped-section sample offsets and elliptic sample-index overflow at 2π;
  • flight journal interaction, loading, record-related, and pagination problems;
  • missing tutorial part-name localization;
  • atmospheric conduction being applied twice alongside convection;
  • natural and forced atmospheric convection using radius instead of diameter and the wrong average-distance input;
  • internal heat production and contents heat transfer using total part mass without excluding skin mass;
  • heat transfer between skins, part interiors, connected parts, and contents not accounting correctly for both sides’ thermal capacities;
  • heat-shield ablation rates changing with the simulation time step;
  • reentry radiative heating being ten times too high because of an incorrect W/cm²-to-W/m² conversion factor;
  • burn-time and maneuver data not updating after staging or throttle changes;
  • angular momentum transfer after decoupling and spacecraft undocking;
  • spacecraft entering different physics worlds;
  • stale connections after part or spacecraft destruction;
  • transforms and rotations after decoupling;
  • multiple parachute deployment, save-loading, attachment, and recursion errors;
  • cable simulation stopping while time was paused;
  • the operation of Skycrane 0;
  • assembly animation skipping and preview problems;
  • repeated undo/redo failures involving staging, offset, and rotation operations;
  • broken mirror symmetry and symmetric-part offset behavior;
  • wheel twisting, mirrored-part offsets, and wheel-system calculations;
  • the recovery button being unavailable in water;
  • the journal button appearing in rocket assembly mode;
  • a distorted navball when DLSS rendering scale was below 100%;
  • blurry UI sprites and several missing UI localizations.

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