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I've done a bit of research. These are the sensors of the S-31EZh "Zhelazny" system (Russian: С-31ЭЖ), the pilot's head tracking system. How it works: This system was part of the ZSh-5 – the world's first integrated helmet-mounted sighting system (HMS), introduced in the MiG-29 and Su-27 in the late 1970s/early 1980s. These "windows" are infrared photodetectors that observe reflections from small, point-shaped IR emitters (diodes) located in the pilot's helmet. This allows the aircraft's targeting computer to know the pilot's direction of view and can direct the OLS-29 sensor (optoelectronic infrared sighting system) or weapons (e.g., R-73 missiles with a wide-angle head) to where the pilot's eyes are looking. The "pulsation" that is visible to the naked eye (sometimes a slight flicker is visible) is the result of these infrared emitters/receivers working - the system is constantly checking the head position. So - old Track IR !

Check the position of the Longitudinal Cyclic Trim indicator on the INST page for the rotors. Once it's maxed out, the flight control system has no more authority in that direction. You can read more about the LCTs here:

They're already spinning in the KA-50 when the HMD is in use, but nobody complained so far, so...

You can also change the trim value in the .lua/cfg file from 1 and -1 to let’s say 0.5 and -0.5….I‘ve changed it to 0.4 and respectively -0.4. Downside of this method is, that you need to change it after every update. And another hint, once you’ve changed it, you have to reassign the trim buttons again to your personal Stick.

Or just annoy the **** out of you on a screen.

yep thats it, thanks

Heatblur did giveaway a T shirt with the F4

I would like to extend the cockpit camera movement (x/y/z position) limits a little bit to allow saving better snap view position presets. I know it has been mentioned in DCS forum before but cannot find it anymore. Afaik the x/y/z camera postion limits were set in a .lua file but I don't recall where anymore. May be someone can help push my nose on it. Thanks.

Real example: But as you can see, sometimes the sensor is also at rest and does not work: I've watched a few videos and sometimes it works and sometimes it doesn't.

# J-20-A-and-C 增强包 2025.08发布说明 ## 功能修复 * 机炮不再一次性打完（2025.07中引入的bug） * 昼夜模式中头盔显示部分对象不再消失 * 背光灯和泛光灯旋钮已更正位置 * 修复 HUD 姿态刻度溢出显示范围的问题（采用单独 page 和层的裁切修复） --- ## 新增功能 ### 通用按键绑定 * 机炮模式开关、机炮模式按钮、机炮模式开、机炮模式关 * 昼夜模式开关、昼夜模式开、夜晚模式关 * 主武器开关、主武器开、主武器关 * 背光和泛光按键绑定 * UFCP On（全亮）、UFCP Off（全暗） * HUD On（全亮）、HUD Off（全暗）、HUD 亮度轴 * MFCD 亮度旋钮 --- ### 自动化 * 热机出生时，如任务起始时间18:00~6:00 * 自动打开背光灯和泛光灯 * 自动切换夜间模式按钮 * 自动头盔亮度到低亮 --- ### 头盔显示（HMD） #### RWR 信号投影 * 三种状态图标 * 搜索：紫色方框 * 锁定：45° 旋转红色方框内嵌于搜索框 * 发射：红色圆环包围锁定框 * 信号源识别文字位于图标上方，状态文字位于下方 * 发射状态下图标与文字闪烁 * 右侧垂直 5 段式白色信号功率条 * 可显示头盔背面 180° RWR 信号源，并用黄色“背面”标识 * 对 RWR 高优先级前 5 个目标进行方块着色（RWR不区分敌我） #### 聚类与抗干扰 * acmLock 和 BVR 锁定改用聚类目标 * 将雷达目标替换为过滤排序后的聚类目标，提升抗干扰能力及性能 #### 态势感知 * 显示目标的相对航向与地速 * 态势目标仅连线至最近 5 个 * 背向目标显示时加“背面”标记 #### 导航点显示 * 导航模式下区分转向点与降落点 * 对地模式下区分转向点与攻击点 * 导航点背向显示时添加“背面”标记 #### 锁定交互与动效 * 候选锁定目标的 NCTR 文本在范围内变为白色以提示 * BVR 模式下可通过头盔指向选择待锁定目标，并使用 TMS 向下键执行锁定 --- ### HUD * 使用归一化角度算法消除导航点跳变 * 优化布局，提升可读性和一致性 --- ### 雷达系统 * 增强目标回波预处理限制值，进一步提升 ECM 抗干扰及系统性能 * 大范围重构雷达设备代码（特别是头盔目标与 acmLock 过程），实现各种姿态下的精准锁定 * Roll 机动优化：即使达到 90° 以上，MFD 锁定与头盔雷达指向亦能正确反映 --- ### 武器系统 * 支持搭载 CM-102A 反辐射导弹 (感谢 B站：麻辣兔兔柚 提供武器包) * 更新武器发射逻辑 可以人工发射CM-102A * 更新 MFD 等武器显示布局，以集成 CM-102A * Top条仅显示弹数大于0的武器挂载项目 * 更新挂架优选规则，优先选中外部挂架 * 修复导弹的negtive drag和negtive weight --- ## 开发调试增强 * `utils.lua` 增加无干预获取命令名函数 `Get_command_name` * `utils.lua` 新增角度归一化算法 `Normalize_angle` ## 已知问题和解决方案 * 使用VR设备时，对象过多导致静默渲染崩溃 - 默认停用MFD EADI页面的速度、高度刻度条边上的数字，EHSI上的刻度条、机场标记等对象 - 在不使用VR设备时，可以通过副屏幕设定选项中的模式选项切换：VR/非VR，以重新启用EADI条上的数字和EHSI上的刻度条、机场标记等 - 注意：使用时VR设备，请自行判断是否尝试打开此设置 * 当前MP3列表引用了并不存在的歌曲列表导致log中报错 - 已通过新增机体编辑器选项"Enable MP3Player" 将MP3播放器作为可选特性，默认为不选中 * 飞机选项“Enable NGV”实际并不会起作用 - 当前飞机已具有微光夜视仪，已移除此选项 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ # J-20-A-and-C 增强包 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`](https://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 增强包 2025.06 发布 ## 舱盖与视角优化 * **舱盖升级**：更换为透明且清晰度极高的新型设计。 * **默认视角调整**：默认视角回归中央，为飞行员提供更自然的起始观看视角。 ## 材质与输入绑定优化 * **材质文件替换**：更新为含有 alpha 通道的版本，提升性能并消除日志警告信息。 * **输入绑定增强**：修复并优化多个按键与轴的绑定问题，使摇杆和油门杆绑定更顺畅。具体请在游戏内查阅绑定。 ## 模型与函数增强 * **模型参数调整**：部分参数参考 F-22 版本，效果待进一步验证。 * **四元数计算函数新增**：新增一系列四元数相关函数，提升空间计算精度与便捷性。 * **调试输出函数新增**：新增 Log_and_print 函数，便于调试信息输出。 * **额外句柄支持**：增加大量新句柄，提升系统扩展能力。 ## 武器挂载增强 * **PL-17 集成**：新增单发版本及虚构 4 发弹舱版，支持玩家发射。 * **PL-15 更新**：新增虚构 2 发弹舱版本，支持玩家使用。 * **PL-10E 更新**：新增虚构 4 发弹舱版本，支持玩家使用。 * **主军械独立绑定**：Arm/Safe 按钮可独立绑定，操作更灵活。 * **显示改进**：主显示器顶部页面显示 PL-17 数量；P4 屏幕新增机炮与弹药显示；HUD、HMD 与 MFD 显示弹量信息。 ## 雷达系统重构与增强 * **ACM 锁定功能重写**：除 WACQ 模式外，所有雷达进入增稳模式，避免因姿态变化导致的随机俯仰或滚转。 * **跟踪改进**：锁定过程中更准确地跟随飞机姿态变化。 * **自动锁定优化**：基于最近距离目标进行自动锁定，提升效率。 * **锁定速度提升**：典型锁定时间缩短至 0.4-0.8 秒。 * **新增 HACQ 模式**：DMS 向下长按启用，扫描范围 50 海里，水平宽度 120°，垂直宽度 10°。 * **BST 模式长孔径调整**：DMS 向上长按触发，水平与垂直均为 5°。 ## MFD 雷达与 EHSI 显示增强 * **BVR 与 ACM 模式显示优化**：雷达页面显示不同 ACM 模式下的扫描宽度，波束扫动效果根据实际范围调整。 * **单位切换校正**：英制与公制切换时，雷达距离比例显示准确。 * **BST 模式显示优化**：波束与头盔跟随效果更真实。 * **锁定后显示优化**：目标颜色标示、距离比例、十字准星与波束跟随效果均正确展示；自动切换最合适的雷达显示比例；EHSI 显示目标 NCTR 数值。 ## 头盔功能强化 * **目标显示增强**：根据雷达扫描结果显示目标，敌方红色、未知黄色、友方绿色。显示效果更真实。 * **目标过滤与聚类显示**：新增基于时间过滤与距离聚类的目标显示方式，以蓝色边框标示。 * **BST 模式瞄准修正**：修复使用头盔进行目标瞄准时的问题。 ## HUD 显示改进 * **头盔效果延伸至 HUD**：几乎所有头盔增强效果同步至 HUD。 * **文本布局与字体调整**：重新设计文本位置与字体大小，提升可读性。 * **动态准星显示**：空对空内置机炮动态准星准确展现。 * **HACQ 模式参考线**：表现为两条间隔 10° 的水平线。 * **HUD 角度校准**：实现头盔与 HUD 间无缝衔接，准确显示攻角与相对航向信息。 ## J-20A 更新内容 * **内置机炮新增**：J-20A 型机新增内置机炮功能。 ## 停用功能 * **简化主屏幕 EHSI 显示**：不再显示机场与详细方位刻度，解决 VR 模式下进入机舱时 DCS 无日志告警后崩溃的问题。 ## 已知问题 * **辅助屏幕崩溃问题**：VR 模式下切换辅助屏幕 EHSI 页面前需退出巡航模式，否则可能崩溃。 * **目标数量性能问题**：目标超过 15 个时，雷达与相关功能可能无法正常工作，原因待查。 J-20-A-and-C Enhancement Pack 2025.08 Release Notes Bug Fixes Fixed bug where the cannon would fire all rounds at once (introduced in 2025.07). Objects in helmet display no longer disappear in day/night mode. Corrected positions of backlight and floodlight knobs. Fixed HUD attitude scale overflow issue (resolved via separate page and layer clipping). New Features General Key Bindings Cannon mode toggle, cannon mode button, cannon mode on, cannon mode off. Day/night mode toggle, day mode on, night mode off. Master weapon toggle, master weapon on, master weapon off. Backlight and floodlight key bindings. UFCP On (full bright), UFCP Off (full dark). HUD On (full bright), HUD Off (full dark), HUD brightness axis. MFCD brightness knob. Automation When hot start occurs between 18:00–06:00: Automatically turn on backlight and floodlight. Automatically switch to night mode. Automatically set helmet brightness to low. Helmet-Mounted Display (HMD) RWR Signal Projection Three status icons: Search: purple square. Lock: 45° rotated red square inside search box. Launch: red ring surrounding lock box. Signal source ID text above icon; status text below. Icons and text flash in launch state. Right-side vertical 5-segment white signal strength bar. Can display RWR sources behind helmet (180°) with yellow “Rear” label. Top 5 high-priority RWR targets highlighted (no friend/foe distinction). Clustering & Anti-Jamming acmLock and BVR lock now use clustered targets. Radar targets replaced with filtered and sorted clustered targets for improved anti-jamming and performance. Situational Awareness Display target relative heading and ground speed. Connect lines only to nearest 5 targets. “Rear” label added for rear-facing targets. Navigation Point Display In navigation mode, distinguish between waypoints and landing points. In ground attack mode, distinguish between waypoints and attack points. “Rear” label added for rear-facing navigation points. Lock Interaction & Animation NCTR text for candidate lock targets turns white when in range. In BVR mode, can select target to lock by pointing helmet and pressing TMS down. HUD Normalized angle algorithm eliminates waypoint jump. Layout optimized for readability and consistency. Radar System Increased target echo preprocessing limit for better ECM resistance and performance. Major radar code refactor (especially helmet target and acmLock process) for precise lock in all attitudes. Roll maneuver optimization: even beyond 90°, MFD lock and helmet radar direction display correctly. Weapon System Added CM-102A anti-radiation missile support (thanks to Bilibili user 麻辣兔兔柚 for weapon pack). Updated weapon launch logic to allow manual CM-102A launch. Updated MFD and weapon display layouts to integrate CM-102A. Top bar only shows weapon stations with ammo > 0. Updated pylon selection rules to prioritize external pylons. Fixed missile negative drag and negative weight issues. Development & Debug Enhancements utils.lua now includes Get_command_name function for retrieving command names without interference. utils.lua adds Normalize_angle algorithm. Known Issues & Solutions VR devices may crash due to too many objects being rendered silently: By default, disable numbers on MFD EADI speed/altitude scales, EHSI scale bars, and airport markers. When not using VR, switch mode in secondary display settings (VR/Non-VR) to re-enable these elements. Caution: In VR, enable at your own risk. Current MP3 list references non-existent songs, causing log errors: Added “Enable MP3Player” option in aircraft editor; disabled by default. “Enable NGV” option has no effect: Aircraft already has low-light NVG; option removed. J-20-A-and-C Enhancement Pack 2025.07 System Optimizations FLIR Display Fix: J-20C now correctly displays FLIR page. Wide-Angle WACQ Mode Enhancement: Scan range increased to 20 NM; animations updated for wide-angle and long-aperture modes. Helmet IR Lock Ring Fix: WeaponSystem code fix restores correct IR lock inner ring and lock animation. Display & UI Updates Auxiliary Screen Stability: Exiting AA/AG mode now returns to main menu to avoid VR crashes. New VR/Non-VR Display Mode Option: Added OSB6 toggle in secondary display settings; VR mode default for stability. Radar Target Processing: Now supports >15 radar targets. Weapon System Upgrades Mission Editor Loadout Page: PL-17 replaced with PL-15 model when mounted to avoid clipping; reverts after launch. Weapon Switching Logic: Skips empty pylons and invalid missiles automatically. DLZ & TOF Implementation: TOF: Track up to 6 launched missiles with countdown on MFD Top page; HUD/HMD show clock-style indicator. DLZ: STT lock shows target distance dot moving around lock box edges according to range. 👁 HUD & HMD Enhancements Master Arm SAFE Display: HUD/HMD show SAFE status. HUD New Data: Added true airspeed and vertical climb rate. STT Lock Layout Optimization: Clearer HUD/HMD lock info. HUD Angle Calibration: Seamless HUD-HMD transition. VACQ Mode Update: Range updated to 8° × 90°. Debug Layer Optimization Helmet Debug Info: Moved to separate page layer; controlled by Render_debug_info. HUD Debug Info: Unified with helmet debug logic. J-20-A-and-C Enhancement Pack 2025.06 Canopy & View Optimization Canopy Upgrade: New transparent, high-clarity design. Default View Adjustment: Centered default view. Material & Input Binding Optimization Material Update: Alpha channel version for better performance and no log warnings. Input Binding Fixes: Improved joystick/throttle bindings. Model & Function Enhancements Model Parameter Adjustments: Some based on F-22. Quaternion Functions: Added for better spatial calculations. Debug Output Function: Added Log_and_print. Extra Handle Support: Many new handles added. Weapon Mount Enhancements PL-17: Added single and fictional 4-round bay versions. PL-15: Added fictional 2-round bay version. PL-10E: Added fictional 4-round bay version. Independent Master Arm Binding. Display Improvements: Ammo counts shown on HUD/HMD/MFD. Radar System Rework ACM Lock Rewrite: All radar modes stabilized except WACQ. Tracking Improvements: More accurate with attitude changes. Auto-Lock Optimization: Locks nearest target. Lock Speed: Reduced to 0.4–0.8s. New HACQ Mode: 50 NM range, 120° × 10° scan. BST Mode Adjustment: 5° × 5° scan. MFD Radar & EHSI Enhancements BVR & ACM Display Optimization. Unit Switch Fix. BST Mode Display Improvements. Post-Lock Display Optimization: Correct colors, scaling, and NCTR data. Helmet Enhancements Target Display: Red for hostile, yellow for unknown, green for friendly. Target Filtering & Clustering: Blue border for clustered targets. BST Mode Aim Fix. HUD Improvements Helmet Effects Extended to HUD. Text Layout & Font Adjustments. Dynamic Gunsight. HACQ Mode Reference Lines. HUD Angle Calibration. J-20A Updates Internal Cannon Added. Disabled Features Simplified EHSI: Removed airport and detailed heading scale in VR to prevent crashes. Known Issues Aux Screen Crash in VR: Exit cruise mode before switching to E

Yup, ok thanks for the confirmation. I'll have to take another hard look.

In Moose 2.9.13 the afghan airports are included. The RAT script is part of Mosse, so no special download. Must be a failure in your script.

The VL MICA shares no commonality with the SAMP/T. If nothing else, it would make more sense to add the MICA to the Currenthill Asset Pack's IRIS-T SLS.

Cerppo, I am getting this error. I did not see any install instructions, so I am just wondering what i screwed up. Thank you for all your hard work.

There is some Merch I just wish we was easier to find.

The endurance as shown on the HSD and VSD is currently calculated as h.0 hours instead of h.mm hours and minutes. I'm pretty sure it used to be calculated correctly in a previous version, but am not sure when this was broken. Currently seeing the issue in 2.9.19.13478 In the attached screenshots, the endurance is given as either 1.0 or 2.0 hours depending on the current fuel flow, with no in-between values. The issue seem reminiscent of the odd ETE calculation as reported here. KW_Endurance.trk

Makes sense to me. can ED confirm please?

Hello, @gorandcs. The vanilla MICA-RF missile does not have sufficient energy to launch from a vertical position. If you want a short-range SAMP/T, you can simply activate the disabled TEL Aster-15. To do this, open the entry.lua file in the mod's root folder and delete the double dash on line 146 so that it looks like this: dofile(current_mod_path..'/Database/Vehicles/SAMPT_MLT_Blk2.lua')

Holy thread revival! Thanks for the info though.

I'm fine using trim in every other DCS 'copter I have - Huey, AH-64D and MI-8 but I cannot seem to trim the Chinook for level flight above 140 knots or so or around >50% throttle. When I'm less than 140, I use the CD REL around the attitude I want and then adjust with trim hat, everything's great. Above 140, I do the same and the aircraft pitches hard in the direction I am trimming - if I'm trimming down, it does a nose dive; trimming up it goes nose high. It will stay in trim at a climb rate of ~1k, this gets worse the more power is added. If I just use my joystick, I can find a position at that speed where I am level with out many micro adjustments, but as soon as I hit CD REL, it pitches. I've about tried everything at this point: instant vs center trim, holding and releasing vs pressing trim when in position, various combination of trim hat and CD REL etc. EA bug or am I not understanding something about the 'copter/flight computer? Thanks for any assistance

It would be a good idea to be able to turn off this animation. I'm afraid it might give you a headache in VR . Shimmering manifests itself as a flickering effect that's always visible out of the corner of your eye, and it's not a pleasant experience. Of course, we'll see it once the model arrives, and then we can judge.

https://web.archive.org/web/20240402152321/https://www.cymstar.com/what-we-do/simulation-products/cymlite-series/cymlite-mcs/

Great. With a value of 900 the smoke pod works again.

I'm using Moose 2.9.13. My RAT script works in the Caucuses, Nellis, Sinia and Syria.

Gierasimov's post is the solution to this thread, not yours.