Customized 5-Surface XR Curved LED Immersive Display System:Aviation Academy Virtual Visualization Customization

As the aviation industry shifts toward digital training and precision verification, the need for immersive visual environments has evolved from simple visibility to true perceptual realism. Traditional flat display systems face three major limitations:

• Insufficient field of view, causing loss of critical low-altitude visual cues such as runway edges and obstacles;
• High signal latency, resulting in input-to-display delay during high-dynamic maneuvers such as dives or aerial combat;
• Visible bezel gaps, breaking scene continuity and reducing immersion.

Doitvision build a customized 5-surface XR curved LED immersive display system. It is designed to reproduce the full external flight environment. It can achieve near 1:1 visual replication of real flight conditions.

The system must address three technical challenges:

• Geometric correction for curved LED surfaces, seamless perspective alignment across all five screens;
• Multi-display frame synchronization;
• using hardware synchronization and low-latency transmission to eliminate tearing and stutter;
• Long-term operational stability;
• supporting continuous operation over 12 hours per day through optimized thermal management and redundant design.

Project Core Constraints and Requirements

Deep Hardware-Software Compatibility

The system must be 100% compatible with the core features of UE5 flight visual software. It focus on adaptation to Nanite Virtualized Geometry and Lumen Global Illumination technologies.

Nanite’s micropolygon rendering enables real-time rendering of aircraft models with tens of millions of polygons, requiring the hardware layer to support high-frame-rate output at single-channel ≥4K resolution.

Lumen’s dynamic lighting calculations require the display system to possess 18-bit grayscale output capability, ensuring smooth transitions of light and shadow effects such as cloud shadows and dusk halos.

To achieve this, a “hardware twin test platform” must be established in advance. Its screen dimensions (7.5m × 3.83m × 4.25m), pixel density (1.5mm pixel pitch), and signal pathway (DP1.2 + fiber optic transmission) must be identical to the final installation environment.

This platform will be used for UE5 multi-channel image fusion debugging, including edge feathering parameter calibration, color calibration curve matching, and FOV coordinate mapping.

The cumulative debugging duration must not be less than 200 hours to avoid software re-adaptation due to hardware discrepancies.

Full-Process Implementation

Requirements:

The project implementation timeline is strictly controlled at 180 days, progressing through five key phases sequentially. Among these, the “2-Month Stable Operation Test” is the core quality control node. It must satisfy continuous fault-free operation for ≥4320 hours (24 hours/day × 60 days), with key performance indicators consistently meeting standards:

Frame drop rate ≤0.1%, brightness decay rate ≤3%,

• System latency fluctuation ≤10ms.
• The test must simulate extreme operating conditions, including high-temperature environments (internal screen temperature 45°C), voltage fluctuations (±10% of rated voltage),
• Signal interference (simulated airport radar signals), comprehensively verifying the system’s environmental adaptability.

Performance and Safety Requirements:

System performance must meet the real-time demands of flight simulation.

• The overall visual latency across the entire chain must be ≤120ms,
• Comprising signal transmission delay ≤20ms,
• Processing delay ≤50ms,
• Display response delay ≤50ms.
• System startup time must be <45 seconds, Supporting one-click startup and emergency shutdown functions.

Overall Design Plan

System Architecture Design

This system adopts a three-tier architecture of “Hardware Layer – Control Layer – Application Layer.”

Each tier collaborates through standardized interfaces, ensuring independent debugging and maintenance at each level while enabling efficient linkage across the entire system.

The design also incorporates expansion interfaces to enhance system scalability throughout its lifecycle.

Architectural Level	Core Components	Functional Positioning	Key Technical Support
Hardware Layer	1. 5-curved LED Display Unit	Physical carrier of the system, undertaking three core functions: 1. Receiving, decoding, and real-time display of visual signals; 2. Amplifying audio signals and outputting spatial sound effects; 3. Maintaining 7×24-hour stable operation of the equipment through heat dissipation and power supply modules.	Flexible LED packaging using COB process, protective layer thickness of 0.8mm; Directional air duct using static pressure chamber + diffuser design; UPS supports 30 minutes of continuous power supply (full load); Power supply system with dual-circuit redundancy.
	2. Video Processing Unit
	3. Audio Output Unit
	4. Fresh Air Cooling Unit
	5. Power Supply Unit
Control Layer	1. Display Control Module	As the “central nervous system” of the system, it achieves three functions: 1. Precisely controlling display parameters to ensure visual fidelity; 2. Real-time monitoring of equipment operation status and triggering audible and visual alarms in case of abnormalities; 3. Reducing operating costs through energy-saving strategies.	Per-point calibration algorithm with an accuracy of ≤0.1cd/㎡, supporting offline calibration and online fine-tuning; Frame synchronization technology using clock synchronization protocol (error ≤1ms); IoT monitoring platform supporting dual-end access via mobile APP and PC, with a data sampling frequency of once per second.
	2. Signal Control Module (Hardware Frame Synchronizer, 16-point Feathering Edge Blending Processor)
	3. Status Monitoring Module (8-channel Temperature/Voltage Sensors, IoT Remote Monitoring Platform)
	4. Energy-saving Control Module (Ambient Light Sensor, Time-based Start-stop Control System)
Application Layer	1. UE5 Visual Software Adaptation Interface	A bridge connecting hardware and user needs, achieving two core values: 1. Seamless connection between “UE5 visual rendering-hardware display” through standardized interfaces, supporting rapid switching of multiple scene visuals; 2. Providing users with convenient operation and maintenance tools to lower the usage threshold.	API interface supports C++/Python secondary development, providing complete development documentation; Operation interface adopts modular design (display control, audio adjustment, system settings partitions); Data logs support automatic association of fault codes for easy traceability and analysis.
	2. Operation Interaction Interface (10-inch Touch Screen Operation Panel, Upper Computer Monitoring Software V2.0)
	3. Data Log Module

Overall Design Philosophy and Innovations

Spatial Immersion and Structural Integration Design:

Dual Ceiling-Floor Embedding + Seamless Splicing Structure:

The cabinet assembly extends fully to the ceiling. The upper screen section is rigidly connected to pre-embedded steel plates in the ceiling via “L-shaped corner brackets + expansion bolts,” achieving a flush embedment with the ceiling plane (gap ≤2mm).

The bottom screen section is embedded 30cm into the floor, surfaced with 12mm thick tempered laminated anti-slip glass, flush with the floor. This design eliminates the “bezel-induced fragmentation” of traditional displays.

It allowes visuals to extend seamlessly from floor to ceiling, achieving a fully enveloping FOV of ≥207° horizontally and ≥55° vertically, matching pilots’ natural visual range.

Integrated Light Absorption and Noise Reduction Design:

 The cabinet shell is constructed from 3mm thick Q235 cold-rolled steel plate, surface-coated with matte, environmentally friendly light-absorbing paint capable of absorbing over 95% of ambient stray light , preventing glare on visual content.

The cabinet interior is filled with 50mm thick flame-retardant sound-absorbing cotton (Noise Reduction Coefficient ≥0.8), combined with silent fans (noise ≤45dB) in equipment racks, ensuring total system operational noise ≤50dB, meeting office environment noise standards and preventing audio interference from affecting training focus.

Maintenance and Safety Redundancy Design:

Human-Centric Safe Maintenance Space:

The cabinet interior bottom provides a standardized 4.83m × 2.85m maintenance space, designed with “functional zoning”—a 3.63m × 2.25m cockpit installation area (compatible with mainstream flight simulator cockpit dimensions like Boeing 737, Airbus A320).

It surrounded by a 0.6m-wide access corridor. The corridor floor is covered with 2mm thick insulating, anti-slip PVC flooring. Walls are equipped with AC220V emergency lighting and emergency call buttons, and fire extinguishers are placed in corners, comprehensively ensuring maintenance personnel safety.

Triple-Redundancy Assurance System:

• The power supply system employs “UPS + Dual-Circuit Mains” redundancy, with automatic switchover to UPS upon main circuit failure, sustaining system operation for ≥30 minutes to ensure complete training data preservation.
• Signal transmission uses “Ethernet + Fiber Optic” dual backup, automatically switching to fiber optic transmission within ≤100ms upon primary Ethernet cable failure.
• The cooling system is configured with primary and secondary fans; the backup fan activates immediately upon primary fan failure.
• Simultaneously, the air conditioning unit features automatic power reduction under high temperatures to prevent equipment overheating and shutdown.

Domestication and Compliance Design:

100% China Core Components Meeting Performance Standards:

Flexible LED modules are selected from our company’s P1.5 series (1.5mm pixel pitch, brightness uniformity ≥97%), and video processors from Colorlight’s X series (supporting 8K resolution processing). 

All products from leading China companies, avoiding supply chain disruption risks. Actual tests show domestic components have a Mean Time Between Failures (MTBF) ≥50,000 hours, a 20% improvement over imported parts, with a 30% reduction in maintenance costs.

Full Certification Coverage and Compliance Assurance:

All system components have passed national mandatory certifications and industry authority testing, including LED Screen 3C Certification, Energy Efficiency Certification, ISO 9001 Quality Management System Certification,

Detailed Design of Subsystems

Screen Display Subsystem

Cabinet Structure Design

Structural Part	Detailed Parameters	Material & Process	Construction Requirements
Cabinet Overall Dimensions	Height: 3.83m ± 5mm; Length: 7.5m ± 5mm; Depth: 4.25m ± 5mm	Main Frame: Q235 Cold-Rolled Steel Plate; Panel: 1.5mm Thick Matte Light-Absorbing Steel Plate	1. Frame welding uses argon arc welding, with a weld height ≥ 5mm, smooth and burr-free. After welding, conduct 100% visual inspection and 20% ultrasonic non-destructive testing, with a tensile strength ≥ 345MPa. 2. Before cabinet installation, use a laser leveling instrument to level the ground, with a flatness error ≤ 2mm/㎡. The ceiling uses expansion bolts to fix the embedded steel plate, with a load-bearing test ≥ 80kg/㎡ to ensure load-bearing safety.
	Thickness of each side: 0.25m ± 2mm
	Diagonal error ≤ 8mm
Display Module Installation Space	Module Height: 3.33m ± 3mm; Length: 7m ± 3mm; Depth: 4m ± 3mm	Module Installation Bracket: 6061-T6 Aluminum Alloy Profile; Fasteners: M8 Stainless Steel Screws	1. The bracket is rigidly connected to the cabinet frame using bolts, with at least 4 fixed points per square meter and a bolt pre-tightening torque of 15N·m. After installation, use a torque wrench for detection. 2. The gap between the module and the bracket ≤ 0.5mm, detected with a feeler gauge to ensure the flatness of the screen meets the standard. After installation, conduct a full-field scan with a laser flatness instrument, with an error ≤ 0.1mm/㎡.
	Module Installation Hole Spacing: 500mm × 500mm
Corner Design	Inner Screen Corners: Curved Corners (Radius R = 50mm ± 2mm, arc error ≤ 0.5°)	Corners are made using aluminum alloy integrated molding process to avoid splicing gaps; a 5mm thick EVA buffer pad is pasted on the surface for collision prevention and shock absorption.	1. After processing the curved corners, use a 3D scanner for precision detection to ensure they match the perspective relationship of the visual scene and avoid image distortion. 2. The corner buffer pads are pasted with environmentally friendly glue, pressed for 30 minutes after pasting to cure, ensuring no lifting or detachment. After installation, conduct 10 collision tests.
	Lower Four Corners: Right Angles (Chamfer R = 5mm, anti-collision)
	Upper Four Corners: Rounded Corners (Radius R = 100mm ± 2mm, with a natural transition to the ceiling)
Maintenance Space	Length: 4.83m ± 3mm; Depth: 2.85m ± 3mm	Floor: 2mm Thick Insulating Anti-Slip PVC Floor; Wall: 50mm Thick Flame-Retardant Sound-Absorbing Cotton	1. The maintenance space entrance size ≥ 1.2m × 2.0m, equipped with a bidirectional opening fire door for easy equipment access and emergency evacuation. 2. Install a 0.9m high stainless steel handrail along the wall in the passage, set equipment identification signs every 1m on the wall, and draw yellow warning lines on the ground to divide the walking area and equipment area.
	Cockpit Installation Area: 3.63m ± 3mm × 2.25m ± 3mm; Operation Passage Width: 0.6m ± 20mm, Height ≥ 1.8m

LED module：

Technical Indicators	Detailed Parameters	Test Methods & Standards	Notes
Pixel Specifications	Pixel Pitch: 1.5mm	Measure the center distance between pixels to ensure a 1.5mm pitch. Observe at a 2m distance to confirm no “graininess” and clear display of flight scene details such as runway markings, instrument dial graduations, and aircraft silhouettes.	The 16:9 golden ratio pixel arrangement and 1R1G1B pixel composition ensure high-definition display of flight visuals.
	Pixel Arrangement: 16:9 Golden Ratio
	Pixel Composition: 1R1G1B
Brightness & Grayscale	Brightness Range: 0-750cd/㎡ (100-level step adjustment; regular training brightness 500cd/㎡; night flight mode brightness 100cd/㎡); 256-level uninterrupted grayscale adjustment; 18-bit grayscale output	Measure brightness at 5 standard points (center and four corners of the screen) using a luminance meter, taking the average of 3 consecutive measurements. Grayscale testing uses a professional grayscale test card in a darkroom environment (ambient light ≤ 5lux) to ensure no loss of dark field details.	18-bit grayscale output accurately reproduces complex light and shadow scenes, such as dawn sky gradients, semi-transparent cloud layers, and night flight star distributions.
	Grayscale: 256-level uninterrupted adjustment; 18-bit output
Display Performance	Single Channel Resolution: ≥2K (2560×1440, total pixels 3,686,400); Total Resolution: ≥8K (7680×4320, total pixels 33,177,600); Graphics Update Rate: ≥60Hz (matching UE5 rendering frame rate); Refresh Rate: ≥3840Hz	Use a high-speed camera (1000fps) to capture the screen displaying high-speed moving images (e.g., a fighter jet diving at 500m/s), observing no smearing or blurring.	The 3840Hz refresh rate eliminates “motion blur” during high-speed flight visual movements, such as ground scenery rapidly moving backward during takeoff or rapid target turns in aerial combat, improving image clarity by 40% and reducing pilot visual fatigue.
	Refresh Rate: ≥3840Hz
Physical Characteristics	Cabinet Flatness: ≤0.1mm/㎡	1. The 0.1mm/㎡ flatness ensures no “concave-convex deformation” after five-screen assembly, perfectly matching UE5 perspective projection to avoid image geometric distortion. 2. IP65 protection level adapts to daily cleaning and slight water splashes in the training room, extending equipment lifespan.	1. Ensures seamless multi-screen assembly and accurate visual perspective. 2. Enhances equipment durability in training environments.
	Module Bending Radius: ≥500mm
	Protection Process; Weight: ≤12kg/㎡
Lifespan & Reliability	LED Lamp Lifespan: ≥100,000 hours; Operating Temperature: -20℃~60℃; Operating Humidity: 10%~90% (non-condensing); Mean Time Between Failures (MTBF): ≥50,000 hours	Calculated at 12 hours of continuous operation per day, a 100,000-hour lifespan allows 22 years of use, far exceeding the conventional 15-year lifespan of aviation simulation equipment. The wide-temperature design supports operation in unconditioned environments, such as northern winters (-10℃) and southern summers (40℃).	Long lifespan and high reliability reduce maintenance costs and downtime in aviation training facilities.
	MTBF: ≥50,000 hours

Video Processing Subsystem

Video Processor

Core Function:

 Acting as the “signal hub,” it receives 16 channels of 4K@60Hz video signals from the UE5 visual server.

Through a five-step processing flow—”Decoding → Color Correction → Edge Blending → Resolution Adaptation → Signal Distribution”—it enables synchronous display across the 5 screen surfaces.

Edge blending utilizes a 16-point feathering algorithm that adaptively adjusts the blend zone width based on cabinet splicing gaps to eliminate bright/dark bands at joints.

Color correction supports per-channel RGB adjustment, ensuring color consistency across all 5 screens.

Key Parameters:

• a. Signal Input: Supports DP1.2, HDMI2.0, DVI; compatible with UE5’s DirectX 12 Ultimate interface; total data transmission bandwidth ≥32Gbps; supports HDR10 signal input.
• b. Edge Blending: Blend zone width continuously adjustable from 0-200 pixels; feathering curve supports linear and S-curve modes; post-blend image brightness uniformity ≥97%, with no obvious splicing traces.
• c. Color Processing: Supports color space conversion for BT.709, BT.2020, DCI-P3; color gamut coverage ≥95% DCI-P3; Gamma value adjustable from 0.1-10; color correction accuracy ΔE≤1.
• d. Synchronization Performance: Employs dual guarantee of “Hardware Frame Synchronizer + Clock Synchronization Protocol”; multi-screen synchronization deviation ≤1ms, no screen tearing captured by high-speed camera; supports clock synchronization with audio system, ensuring audio-video delay difference ≤20ms.

Receiver Card

Technical Indicators	Detailed Parameters	Test Standards	Functional Advantages
Hardware Configuration	Single card integrates 12 HUB75E interfaces; supports 24 groups of RGB parallel data transmission; maximum pixel load: 256×768; single card drives 1.2㎡ 1.5mm pitch modules	Continuous operation for 72 hours with no signal loss or flicker; full-load test: run for 24 hours, measure power consumption ≤15W, temperature rise ≤10℃, no crashes or restarts	HUB-board-free design reduces 30% of intermediate connections, lowering signal attenuation and failure points; high load capacity reduces receiver card usage, simplifying system complexity and cost
	HUB75E Interfaces: 12
	RGB Parallel Data Groups: 24
Calibration Function	Supports per-pixel brightness and chromaticity calibration; RGB independent Gamma adjustment; offline calibration data storage	Calibration effect test: Use a professional calibration camera to capture the full screen, select 10 test points (center, corners, edges), measure brightness uniformity ≥97%, chromaticity uniformity ΔE ≤1; Gamma adjustment test: Capture grayscale gradients at different Gamma values, observe no discontinuities	Per-pixel calibration eliminates “mosaic” effects caused by LED variations, ensuring uniform brightness and color across 5 screens during solid-color displays; multiple calibration data sets support quick switching between day, night, and cloudy training scenarios
	Brightness Uniformity: ≥97%
	Chromaticity Uniformity ΔE: ≤1
Redundancy & Protection	Supports network cable loop backup; operating voltage DC 5V ±0.2V; power consumption ≤15W; protection grade IP30; PCB with moisture-proof coating	Backup test: Manually disconnect the main network cable during operation, measure switching time ≤100ms with an oscilloscope, no black screens or stuttering; power test: measure full-load power consumption with error ≤5%; moisture test: operate for 72 hours at 40℃/90%RH, no shorts or corrosion	Dual network cable backup prevents local blackouts from single cable failures, improving system stability; low power design reduces heat stress, and moisture-proof PCB suits long-term use in humid southern environments
	Network Cable Backup: Dual
	Moisture Protection: PCB Coating
Certification Requirements	Provide third-party ilac-MRA, CNAS, CMA triple-authority functional test reports, valid for ≥1 year	Reports must be issued by a nationally recognized electronic information product testing agency, using the same batch as the project; test data must meet all technical requirements with no failures	Triple-authority certification ensures receiver card performance compliance, avoiding compatibility issues from “non-standard” products; EMC testing prevents interference with flight simulator electronics, ensuring training safety
	Certification Scope: ilac-MRA, CNAS, CMA

Main Control Equipment

Load Capacity and Signal Capability:

• Total pixel load capacity: 10.4 million, supporting point-to-point display of 8.29 million pixels, with 20% load margin reserved for future software upgrades.
• Single Ethernet port load: 650,000 pixels; configured with 20 Gigabit Ethernet output ports;
• maximum supported width: 8192 pixels, maximum supported height: 7680 pixels, meeting the signal distribution needs of the 5-screen assembly.
• Supports independent 4Kx2K@60Hz signal output; simultaneously accepts DP1.2, HDMI2.0 video signals, and AUDIO audio interface, enabling synchronous audio-video capture and output.

Redundancy and Monitoring:

• Dual main controller hot-standby design, supports online main controller upgrades; Ethernet port loop backup.
• Host PC monitoring software displays real-time main controller status, including supply voltage, operating temperature, Ethernet port connection status, pixel working status;
• supports fault alarms; historical data storage ≥1 year for fault tracing and performance analysis.

Display Enhancement Features:

• Supports active 3D display, enabling 3D visual flight simulation experience when used with 3D glasses.
• Supports HDR display, clearly rendering dark-field and bright-field details in visuals, with dynamic range 4 times that of standard displays.
• One-click brightness adjustment, supports ambient light sensing auto-adjustment, offering convenient and user-friendly operation.

Audio-Visual Synchronization and Experience Optimization

AV Synchronization Locking Technology: Employs dual technology of “Clock Synchronization + Delay Compensation” to ensure audio-video sync. The audio amplifier processor and video processor achieve clock signal synchronization via an RS232 interface, while also supporting manual audio delay adjustment.

Measurements with professional testing tools confirm audio-video delay difference ≤20ms, far below the human-perceivable threshold of 50ms, completely eliminating the disconnection feeling of “visuals preceding audio.” This ensures precise matching of sound effects and visuals, especially in dynamic scenes like aircraft engine startup and missile launch.

Equipment Type	Quantity	Technical Parameters	Installation Requirements
Front Main Speakers	2	Frequency Response: 20Hz-20kHz (±3dB); Rated Power: 150W (Peak 300W); Sensitivity: 92dB (1W/1m); Impedance: 8Ω; Driver Configuration: 15″ woofer + 1.5″ tweeter	Wall-mounted (bracket load capacity ≥50kg), installed on left/right sides of the screen (height 1.5m-1.8m, vertical deviation ≤2°), 30°-45° horizontal angle to cockpit, 3m-5m from listeners, avoid obstructing sound emission
Center Speaker	1	Frequency Response: 80Hz-20kHz (±3dB); Rated Power: 100W (Peak 200W); Sensitivity: 90dB (1W/1m); Impedance: 8Ω; Driver Configuration: 10″ woofer + 1″ tweeter	Floor-standing mount at screen center (height 1.2m-1.5m), forming isosceles triangle with main speakers
Surround Speakers	2	Frequency Response: 80Hz-20kHz (±3dB); Rated Power: 80W (Peak 160W); Sensitivity: 88dB (1W/1m); Impedance: 8Ω; Driver Configuration: 8″ woofer + 0.75″ tweeter	Ceiling-mounted behind listeners, speaker grilles aimed at driving position, seal gaps with sealant to prevent sound leakage
Subwoofer	1	Frequency Response: 20Hz-120Hz (±3dB); Rated Power: 300W (Peak 600W); Sensitivity: 95dB (1W/1m); Impedance: 4Ω; Driver Configuration: 18″ woofer with phase adjustment (0°-180°)	Floor placement in left/right corner of screen, equipped with 4 anti-slip shock-absorbing feet, ≤8m from amplifier to minimize signal loss
Audio Amplifier Processor	1	Output Channels: 6-channel (5.1 configuration); Rated Power: Front 150W×2, Center 100W×1, Surround 80W×2, Subwoofer 300W×1; Inputs: 3.5mm audio (1 channel for visual server), optical (2 channels), coaxial (2 channels); Features: Echo cancellation (≥90%), noise suppression (≥40dB), sound field calibration	Installed in equipment cabinet of maintenance space, ≤10m from speakers, use 2.5mm² oxygen-free copper cables to reduce signal loss

Adaptive Sound Field Calibration:

Equipped with a sound field calibration microphone, achieving automatic sound field calibration through “Four-Point Sampling + Intelligent Analysis.” Calibration Process:

• Microphone placed at four positions: pilot seat, co-pilot seat, rear training seat, and maintenance corridor.
•  Amplifier processor outputs test signals; microphone collects volume, frequency response, and delay data at each position.
•  System automatically adjusts each speaker’s volume, equalizer parameters, and delay to adapt to different site acoustics.
• Post-calibration, sound field uniformity at all positions ≥90%, ensuring consistent auditory experience for personnel in different roles.