Some updates for J-20A-and-C enhanced pack since June release.
J-20-A-and-C Enhance Pack Installation Guide

⚠️ This Enhance Pack is not a standalone mod. It is an add-on for the original J-20-A-and-C mod.
- Fresh Installation
1 Ensure the original J-20 mod is installed and functioning in DCS.You can download the base mod from:
DCS Forum: https://forum.dcs.world/topic/351326-j-20a-and-c/
2 Launch DCS and confirm the mod is working. Then, download the Enhance Pack:
DCS Forum: https://forum.dcs.world/topic/374787-enhance-pack-for-j-20a-and-c-mod/
3 Unpack the Enhance Pack into the mod's folder and overwrite existing files.
You can ignore the .unused folder, and any ps1 powershell.
- Upgrade Installation
If you're already using a previous version of the Enhance Pack:
Simply unpack the latest version into the mod folder and overwrite all existing files.



J-20-A-and-C 增强版 2025.07

系统功能优化

FLIR显示修正J-20C机型现已正确显示FLIR页面。

广角WACQ模式增强扫描距离提升至 20 海里，主屏幕 P3 的广角与长孔径模式距离动效已根据各自扫描范围完成更新。

头盔 IR 锁定环修复WeaponSystem 代码修复后，头盔上可正确显示 IR 锁定内环及锁定后的动效。

显示与交互界面更新

辅助屏幕稳定性优化从 AA 和 AG 模式退出后，副屏幕将自动返回主菜单，避免在 VR 模式下的潜在崩溃问题。

新增 VR/非 VR 显示模式选项在副屏幕设置页面新增选项，可通过 OSB6 切换 VR/非 VR 模式。默认设定为 VR 模式以简化 P3 显示对象并增强稳定性。在非 VR 模式下，主屏幕 P3 可显示更多导航信息，如方向刻度、机场位置、飞行计划与航路点。注意：请勿在 VR 模式下启用非 VR 参数。

雷达目标处理能力增强系统现已支持超过 15 个目标的雷达处理。

武器系统升级

任务编辑器挂载页面调整舱口状态改为开启，PL-17 在挂载状态下替换为 PL-15 模型以避免穿模，导弹发射后恢复为正常的 PL-17 模型。

切换武器逻辑优化切换武器时将自动跳过空挂架与无效导弹型号，提高缠斗时的效率。注意：当前弹种耗尽后仍需手动切换至其他型号。

DLZ 与 TOF 解算实现

TOF 显示：在主显示器 MFD 的 Top 页面可追踪最多 6 枚已发射导弹的 TOF 倒计时。HUD 与头盔采用表盘式同心圆布局：指针逆时针旋转，末段为红色（暂设 30°），表盘 300° 对应 150 秒。倒数归零后指针复位并隐藏。

DLZ 显示：STT 锁定后，在 HUD 与头盔显示锁定框外的圆点表示目标距离，圆点沿框体逆时针移动：

顶边：最大射程至动态最大射程之间

左边：动态最大射程至动态最佳射程之间

底边：动态最佳射程至动态最小射程之间

右边：动态最小射程至武器最小射程之间当目标位于视角之外时，HUD 中间将显示锁定框及信息，目标进入视野后自动隐藏。

HUD 与头盔显示增强

主武器保险状态显示（Master Arm - SAFE）HUD 与头盔现可显示主武器保险开关（Master Arm）处于 SAFE 状态的提示信息。

HUD 新增信息项增加真空速、垂直爬升率的显示内容。

STT 锁定逻辑与布局优化HUD 与头盔上的 STT 锁定信息布局与逻辑已重新调整，更加清晰。

HUD 显示角度校准HUD 角度范围已校准，实现头盔与 HUD 显示的无缝衔接，目标相对航向与机体攻角信息可准确展现。

垂直扫描 VACQ 模式更新垂直扫描 VACQ 模式范围更新为 8° × 90°。

Debug 层优化

头盔调试信息优化头盔显示中的 debug 信息已移至单独的页层文件，显示与输出由 utils.lua 中的全局变量 Render_debug_info 控制。

HUD 调试信息优化HUD 相关的调试显示逻辑已同步重构，与头盔调试逻辑保持一致，统一由 Render_debug_info 管理。

J-20-A-and-C Enhance Pack July-2025

System Enhancements

FLIR Display FixFLIR page now correctly shown on J-20C.

Wide-Angle WACQ Mode UpdateWACQ scan distance increased to 20 NM; P3 screen animations upd ated to match scan distances of wide and long aperture modes.

HMD IR Lock Ring RepairIR inner ring and related animation now correctly shown on the helmet display after fixing WeaponSystem code.

Interface and Display Improvements

Auxiliary Screen Crash PreventionExiting AA or AG mode now automatically returns to the main menu, preventing potential VR crashes.

VR / Non-VR Mode ToggleSettings page now includes a toggle via OSB6 for switching between VR and Non-VR modes.Default is VR to simplify P3 object handling and increase stability.Non-VR reveals more data, including compass scales, airport locations, flight plans, and waypoints.Note: Do not activate non-VR parameters while in VR mode.

Radar Target Capacity EnhancementRadar system now supports tracking more than 15 targets.

Weapon System Improvements

Mounting Page Adjustments in Mission EditorBay doors are se t to open; PL-17 uses PL-15 model when mounted to avoid clipping. PL-17 model restored when launched.

Weapon Switching Logic UpdateWeapon selection now skips empty pylons and invalid missile types during combat.Note: After a missile type is depleted, manual switching to other types is still required.

DLZ and TOF Implementation

TOF Display: MFD Top page now tracks TOF countdowns for up to six launched missiles.HUD and HMD show dial-style interfaces with concentric rings and a counter-clockwise rotating needle.Final segment marked in red (approx. 30°); 300° corresponds to 150 seconds. Pointer resets and hides after countdown completion.

DLZ Display: STT-locked targets now show a circular dot around the frame in HUD and HMD. The dot moves counter-clockwise to indicate distance:

Top: max range to dynamic max

Left: dynamic max to optimal

Bottom: optimal to dynamic min

Right: dynamic min to minimum weapon rangeWhen target is out of HUD angle, a centered frame with info is shown; disappears once re-entering view.

HUD & Helmet Display Enhancements

Master Arm - SAFE IndicatorSAFE status is now shown on HUD and HMD when Master Arm switch is in SAFE position.

New HUD MetricsAdded display of true airspeed and vertical climb rate.

STT Lock Visual OptimizationHUD and helmet STT lock visuals reorganized for clarity.

HUD Angle AlignmentHUD viewing angles calibrated to align with helmet display. Aircraft angle-of-attack and target heading now properly rendered.

Vertical Scan VACQ UpdateVACQ field adjusted to 8° × 90°.

Debug Layer Optimization

Helmet Debug Display OptimizationDebug display code moved to separate layer file; visibility controlled via global variable Render_debug_info in utils.lua.

HUD Debug Display OptimizationHUD debug logic refactored similarly to helmet system; unified control under Render_debug_info.