OpenRC Simulator v0.1.2

OpenRC Simulator v0.1.2 — release notes

OpenRC Simulator v0.1.2 is a stable software release of an early-alpha simulator. Aircraft and experimental features remain under evaluation; this release does not claim independent physical flight validation.

The experimental-aircraft limits below are disclosed model limitations. They do not block this software release and are not represented as passes.

Experimental-aircraft limits — 2026-10-16

• Ugly Stik rudder recovery: the retained baseline reaches a body yaw-rate magnitude of 15.125273°/s at 240 Hz and 15.200616°/s at 480 Hz against the 15°/s internal screen. The 12-second extension is diagnostic, not acceptance evidence. Independent aircraft evaluation remains open. See the rudder-authority diagnostic and retained exact-replay evidence.
• Yaw damping (R02): the α=11° comparison is 7.75% against the 7% screening threshold. This model comparison is not a physical measurement; evaluation remains open. See the R02 damping diagnostic.
• Experimental P-51D (P51-22): powered takeoff and inside-loop acceptance remain pending. The aircraft selector identifies the model as experimental and shows this status. See the P51-22 report.

These items are not stable-release gates. They remain visible limitations for anyone evaluating the affected aircraft; a software release does not qualify their flight behavior.

Changes

• Adds Settings for windowed or borderless fullscreen, interface scale, opaque panels, reduced motion, language and menu volume. A window-mode change reverts after 15 seconds unless kept; other presentation changes have explicit Keep/Revert controls.
• Rebuilds Home as a compact, scrollable flight-setup rail with separate Flight, Aircraft, Practice, Workshop and Garage pages while keeping the primary flight actions available. Adds menu focus and action sounds with an adjustable level. Menu evidence.
• Adds profile-based gamepad actions for menu navigation and flight controls, with optional actions for supported aircraft equipment.
• Adds simulated retractable landing gear and flaps for the P-51D and Ventage Jet. P-51 flap settings are 15° for takeoff and up to 45°; Ventage Jet settings are 20° for takeoff and up to 50°. Gear mechanics, actuator times and aerodynamic behavior still include estimates and have not been flight-identified.
• Adds a post-crash incident report with component damage, repair and replacement estimates, and catalog assumptions. Pending inspection or unknown condition keeps eligible salvage and total-loss values unknown instead of displaying zero; historical reports are not rewritten. Reports can be incomplete; prices, labor and repair outcomes are estimates, not market quotes or repair instructions. Salvage-estimate correction.
• Extends the shared simulation kernel with a common environment interface, stiff-contact substeps and generalized-coordinate solves. A research-grade multirotor plant also uses the shared kernel; a flyable drone or race activity is not included.
• Developer tooling (source checkout only): Adds optional radio, gamepad or joystick input through existing controller profiles to the detached articulated HX-700 mechanics inspector (research/helicopter/inspect-mechanics.ps1). Focus loss or device disconnect pauses the preview. The script and articulated assets are excluded from all desktop ZIPs. This does not change the existing flyable helicopter trainer or its flight model; physical control and flight qualification remain open. Inspector evidence.
• Adds the experimental MONSTER CAR 2 nitro vehicle alongside Bisonte MT8, with its supplied articulated model, engine speed and fuel state. The source selects the native ground evaluator on Windows/Linux and the GDScript reference implementation on macOS. Physical handling and target-machine performance remain unqualified.
• Refreshes field visuals with runway and mown surfaces integrated into the ground pass for supported layouts, reusable generated lake geometry, and updated aircraft-light and shadow framing. Cloud shadows and haze remain in the ground pass; L9c motion acceptance and target-hardware performance remain open. Surface evidence; landscape evidence.
• Adds detailed tubular-frame folding chairs at the pits, retaining their seeded placement and fabric colours; this is a visual estimate with no new downloaded asset. Chair verification.
• Reduces parked-car geometry and bench tessellation to keep the detailed field within its unchanged geometry limits. Landscape verification covers the original downloaded models, regenerated outputs and paired appearance captures.

Downloads

Platform	Archive
Windows x86_64	ZIP
Linux x86_64	ZIP
macOS universal	ZIP

Compare the downloaded files with SHA256SUMS. Extract a ZIP and follow the first-launch guide; Godot is not required. Archives are unsigned and have no installer.

Verification and limits

The release workflow passed on tagged commit 40275349. All three published archives match the tested SHA-256 values. The downloaded Windows package completed a 720-tick, three-second trimmed-flight check with finite samples; a Windows host probe also verified its packaged native library and build identity. The visual job passed on retry after an importer crash in a temporary test project; the package bytes were not rebuilt.

The release workflow gates publication on automated application, capture, native and platform-package checks. These checks verify software and archives; they do not establish physical flight accuracy, radio compatibility, pilot acceptance or target-machine performance. Aircraft configurations remain experimental, and flap and gear behavior, Stik rudder recovery, R02 yaw damping and P51-22 acceptance need further evaluation.