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📖 TECHNICAL MANUAL & GRAPH GUIDE

SYSTEM SPEC // V3.8 AVIONICS
🔍

CHAPTER 1: ENGINE DIAGNOSTICS GRAPHS

PAGE: DIAGNOSTICS.HTML

1. COMPOSITE MULTI-CHANNEL TELEMETRY

diagnostics.html > Synchronized Scrubber Timeline

Plots RPM, Cylinder Head Temperature (CHT), Exhaust Gas Temperature (EGT), Altitude (AGL), and Tri-Axial Vibration synchronized to a single master flight time axis with interactive cursor scrubbing and dual/triple Y-axes.

Primary Purpose: Correlate power demand with thermal reaction
Time Resolution: 50Hz Internal (Aggregated 1Hz-5Hz Plot)
Scrubber Feature: Synchronizes 3D map location with engine telemetry
💡 Diagnostic Insight: When throttling up from idle to WOT (Wide Open Throttle), EGT should spike within 2–4 seconds, while CHT follows with a 15–20 second thermal mass rise. If CHT rises rapidly without EGT dropping, check for lean fuel mixture or cooling shroud obstruction.

2. RPM VS. CHT SCATTER CORRELATION

diagnostics.html > Thermal Load Matrix

A 2D cluster map analyzing Cylinder Head Temperature as a function of Engine RPM. Displays thermal operating bands across Idle (2,200–2,800 RPM), Midrange Cruise (5,000–6,500 RPM), and Max Climb (7,800–8,600 RPM).

X-Axis (Load): Engine RPM (0 – 9,500 RPM)
Y-Axis (Temp): Cylinder Head Temp (°C / °F)
Optimal Cluster: 130°C – 175°C (Moster 185)
⚠️ Danger Pattern: Points scattered in the upper-left quadrant (High CHT at Low/Idle RPM) indicate an overheating engine idling on the ground without prop wash or a lean low-speed carb jet. Points in the upper-right (> 220°C) warn of imminent piston seizure risk.

3. TACHOMETER & RPM RESPONSE CURVE

diagnostics.html > Engine Rev Profiler

Visualizes instantaneous engine rotational speed captured via inductive spark pulse sensing. Evaluates idle smoothness, mid-range throttle step response, and full-throttle maximum output.

Normal Idle: 2,200 – 2,500 RPM
Cruising RPM: 5,200 – 6,200 RPM (Level Flight)
Max WOT Rating: 8,200 – 8,600 RPM (Prop Dependent)
💡 Diagnostic Insight: An RPM "sag" or flat spot when rapidly cracking the throttle indicates lean midrange metering (carburetor needle height adjustment required) or fuel delivery vapor lock.

4. DUAL THERMAL MATRIX: CHT & EGT

diagnostics.html > Combustion & Heat Dissipation

Simultaneous side-by-side comparison of Cylinder Head Temperature (washer thermocouple under spark plug) and Exhaust Gas Temperature (probe in header pipe).

CHT Optimal Range: 130°C – 180°C (266°F – 356°F)
CHT Max Redline: 220°C (428°F) [CRITICAL]
EGT Optimal Range: 550°C – 640°C (1022°F – 1184°F)
EGT Max Redline: 680°C (1256°F) [MELTDOWN RISK]
⚠️ Cold Shock Alert: During rapid idle descents from altitude, CHT drops sharply. If CHT drops below 90°C too quickly, thermal shock can cause uneven piston ring cylinder contraction. Keep 10% power during descents.

5. VIBRATION SPECTRUM ANALYZER

diagnostics.html > Inertial Harmonics Lab

Plots Root-Mean-Square (RMS) vibration magnitude (m/s²) derived from high-frequency tri-axial accelerometer sensors mounted to the airframe chassis.

Smooth Baseline: < 15 m/s² (Green Zone)
Moderate Vibration: 15 – 30 m/s² (Inspection Recommended)
Severe Vibration: > 35 m/s² (Prop Damage / Loose Mounts)
💡 Diagnostic Insight: Vibration spikes that occur only at a specific narrow RPM band (e.g. 5,400 RPM) signify propeller blade pitch unbalance or exhaust bracket harmonic resonance. Vibration across all RPMs indicates worn rubber engine mounts or gearbox bearing play.

6. KINEMATIC G-LOAD & ANGULAR VELOCITY

diagnostics.html > Flight Dynamics & Structural Load

Simultaneous tracking of vertical/lateral G-forces (Z-axis G load) alongside gyroscopic pitch, roll, and yaw rotational rates in degrees per second (°/sec).

Level Cruise G: 1.0 G
Steep Spiral Dive: 2.5 G – 3.2 G
Structural Warning: > 3.8 G
💡 Diagnostic Insight: High roll rates (> 45°/sec) accompanied by sudden G-spikes identify dynamic wingtip collapses, asymmetric surges, or aggressive wingover recoveries.

🪂 CHAPTER 2: AERODYNAMICS & WING PERFORMANCE

PAGE: AERODYNAMICS.HTML

1. GLIDE POLAR & POROSITY DEGRADATION

aerodynamics.html > Wing Health Lab

Plots Forward Airspeed (X-axis, mph) against Vertical Sink Rate (Y-axis, ft/min or m/s) across multiple trim configurations (Trims Slow, Trims Neutral, Speedbar 100%). Overlays factory OEM specifications and fleet averages against your live flight points.

Factory OEM Spec: Solid Cyan Curve (Reference Standard)
Fleet Average: Dashed Blue Curve (Model Benchmark)
Best Glide Speed: 24 – 27 mph (Minimum Sink: ~220 ft/min)
🔬 Porosity Diagnosis: If your polar curve systematically shifts down and to the left compared to OEM spec (higher sink at identical airspeed), your glider is experiencing UV fabric porosity breakdown or rear line shrinkage (C/D line trim drag). Time for a professional line trim and Bettsometer porosity test!

2. AERODYNAMIC EFFICIENCY RADAR MATRIX

aerodynamics.html > Multi-Axis Performance Spider

A 6-spoke radar profile evaluating your wing's operational performance across: Glide Ratio, Minimum Sink Efficiency, Usable Speed Window, High-G Structural Rigidity, Airspeed Consistency, and Turn Agility.

Maximum Score: 100 Pts per Vector
Shape Assessment: Expansive, balanced polygon indicates versatile wing
💡 Diagnostic Insight: Reflex paramotor wings typically show high Speed Range and High-G Tolerance scores but slightly lower Minimum Sink efficiency compared to free-flight paragliders.

3. 10-FLIGHT EVOLUTION & PEI SCORE

aerodynamics.html > Service Record Progress

Chronological bar-line trend tracking your last 10 flights. Computes the Pilot Efficiency Index (PEI) based on fuel economy, airspeed management, thermaling efficiency, and thermal stability.

PEI Target: 85+ / 100 (Master Aviator Grade)
Trend Line: Upward slope indicates improving throttle management
💡 Diagnostic Insight: Smooth throttle inputs and flying at "Best Glide" airspeed during cross-country legs significantly boost your PEI score.

4. FLIGHT ENVELOPE & V-N DIAGRAM

aerodynamics.html > Structural Safety Envelope

Airspeed vs. Load Factor (G-Force) diagram showing the structural flight boundaries of your paramotor system, including Stall Velocity ($V_s$), Maneuvering Speed ($V_a$), and Never-Exceed Speed ($V_{ne}$).

Stall Speed (Vs): 14 – 17 mph (Deep brake range)
Design Limit: +4.0 G / -1.0 G
Never-Exceed (Vne): 42 – 48 mph (Full speedbar + Trims Out)
⚠️ Critical Safety: Never apply deep brake inputs when flying at $V_{ne}$ with full speedbar engaged, as reflex profile stability relies on high forward canopy internal cell pressurization.

🎓 CHAPTER 3: PILOT FLIGHT COACH & POSTURE

PAGE: LEARNING_HUB.HTML

1. TAKEOFF TORSO LEAN & POWER DRIVE

learning_hub.html > Foot-Launch Analysis

Analyzes your forward torso pitch angle during the takeoff ground roll. Compares your launch power stance against the optimal 15°–25° forward lean drive zone.

Optimal Power Zone: 15° – 25° Forward Lean (Green Zone)
Upright Stance (< 10°): Risk of sitting down early / butt landings
Excessive Lean (> 35°): Risk of tripping forward on ground roll
💡 Launch Coach Tip: Drive forward with your chest into the harness straps and keep running through the first 10 feet of climbout. Do NOT attempt to sit into the seat until safely out of ground effect!

2. LAUNCH SYMMETRY & ROLL OSCILLATION

learning_hub.html > Riser & Shoulder Balance

Tracks roll axis stability and shoulder tilt during the inflation and acceleration run. Detects uneven torque pull, crosswind crab angle, or one-sided brake dragging.

Target Roll Deviation: < ±4° (Level Wings & Shoulders)
High Oscillation: > ±12° (Pilot fighting wing inflation)
💡 Coach Tip: If you notice consistent roll tilt to the right on launch, apply slightly more left-side thrust offset to compensate for engine propeller torque reaction.

3. LANDING FLARE & TOUCHDOWN DECELERATION

learning_hub.html > Touchdown Dynamics

Measures forward airspeed bleed-off in combination with vertical touchdown G-load impact. Analyzes two-stage flare execution: pendular level-off followed by full-brake touchdown step.

Feather Touchdown: < 1.15 G (Zero knee strain)
Firm Touchdown: 1.2 G – 1.6 G (Acceptable running landing)
Hard Slam: > 2.0 G (Late or incomplete flare)
💡 Coach Tip: Smooth two-stage flaring converts forward kinetic energy into a gentle ground cushion. Do not dump full brakes at 10 feet AGL (causes ballooning and stall drops).

CHAPTER 4: WEATHER & ATMOSPHERIC TELEMETRY

PAGE: WEATHER_EVENTS.HTML

1. BAROMETRIC TREND & STORM ALARMS

weather_events.html > Micro-Barometric Station

Dual-line real-time pressure curve comparing raw instantaneous barometric sensor data against a 60-second Exponential Moving Average (EMA) smoothed sea-level equivalent. Automatically alerts pilots to rapid barometric drops.

Pressure Resolution: 0.01 hPa (Internal High-Precision Baro)
Storm Drop Trigger: > 1.5 hPa drop per hour [WARNING]
Micro-Burst Drop: > 3.0 hPa sudden shift [EMERGENCY LAND]
⛈️ Storm Alert: A steep negative slope on the EMA pressure line indicates an approaching cold front, gust front, or outflow boundary. Land immediately before surface turbulence develops!

2. DENSITY ALTITUDE & ENGINE DERATING

weather_events.html > Aerodynamic Density Matrix

Calculates true aerodynamic density altitude by factoring ambient Outside Air Temperature (OAT) and barometric pressure. Computes 2-stroke engine horsepower derating and takeoff run extension.

Power Derating Rule: ~3% Horsepower loss per 1,000 ft Density Alt
Wing Lift Loss: Requires higher takeoff & landing airspeed
Carburetor Impact: Engine runs richer at high density altitude
☀️ Hot Day Caution: On an 85°F (30°C) summer afternoon at a 1,000 ft field, density altitude can exceed 3,500 ft! Expect a longer foot-launch run and sluggish initial climb rate.

🗺️ CHAPTER 5: 3D FLIGHT MAP & SPATIAL TELEMETRY

PAGE: FLIGHT_MAP.HTML

1. 3D TRACK & COLORIZED VELOCITY RIBBONS

flight_map.html > 3D Geospatial Replay

Full 3D satellite visualization of your exact flight path with high-resolution ribbon extrusions color-coded by velocity, altitude, or variometer vertical climb/sink rate.

🟢 Green / Cyan: Cruising Speed / Level Flight
🔥 Orange / Red: Thermal Cores / Positive Climb (+200 to +800 fpm)
🟣 Purple / Blue: Sink Zones / High-Speed Glides
💡 Replay Tip: Use the timeline scrubber at the bottom of the map to trace your exact GPS position simultaneously with RPM, CHT, and vibration readouts!

2. ALTITUDE & VARIOMETER PROFILER

flight_map.html > Vertical Cross-Section

Cross-sectional altitude profile plotting Above Ground Level (AGL) and Mean Sea Level (MSL) altitude alongside instantaneous vertical speed (ft/min).

Baro Variometer: ±10 cm/sec altitude sensitivity
Max Climb Rate: Logged in debrief summary
💡 Debrief Insight: Correlate your engine RPM with climb rate to verify your prop thrust efficiency at varying airspeeds.

🛠️ CHAPTER 6: BLACKBOX HARDWARE & SENSOR SETUP

HARDWARE CONFIGURATION
1

CYLINDER HEAD TEMPERATURE (CHT) SENSOR INSTALLATION

The CHT thermocouple utilizes a 14mm copper ring washer that mounts directly under the spark plug.

Installation Steps:
1. Unscrew the spark plug from the cylinder head.
2. Slide the CHT copper ring washer onto the spark plug threads until it rests flat against the spark plug base gasket.
3. Thread the spark plug back into the cylinder head and torque to manufacturer specification (18 – 20 Nm for Vittorazi Moster 185 / Atom 80).
4. Route the thermocouple wire away from direct exhaust pipe contact using high-temp silicone heat sleeves and secure with stainless/nylon zip ties.

2

EXHAUST GAS TEMPERATURE (EGT) PROBE INSTALLATION

The EGT probe measures combustion exhaust temperature directly as it exits the engine cylinder.

Installation Steps:
1. Measure 100mm to 120mm (4 to 4.75 inches) down the exhaust manifold pipe from the piston skirt / exhaust port flange.
2. Drill a 5mm hole in the exhaust header pipe at this marked location.
3. Insert the EGT thermocouple probe so the probe tip sits precisely in the center of the exhaust gas flow (do not touch the opposite pipe wall).
4. Tighten the stainless steel worm-drive clamp around the exhaust pipe to lock the probe securely in position.

3

RPM INDUCTIVE PULSE SENSOR WRAPPING

Engine revs are detected non-invasively via electromagnetic inductive pulses emitted by the high-tension spark plug lead.

Installation Steps:
1. Take the yellow/black RPM pickup wire from the BlackBox harness.
2. Wrap the wire 3 to 5 tight revolutions around the thick spark plug HT ignition cable approximately 2 inches back from the spark plug boot.
3. Secure the wraps tightly with electrical tape or heat shrink and a zip tie.
4. Do NOT strip the wire insulation — induction works cleanly through the outer rubber jacket!

4

AUTOMATIC WI-FI TELEMETRY CLOUD SYNC

The BlackBox records all flights autonomously to its internal SD storage at 50Hz. You never need to connect cables to download flight logs.

How It Works:
1. Save your home or hangar Wi-Fi network SSID and password on the Hardware Pairing Page.
2. After landing, when you bring your motor back into range of your Wi-Fi network and power it up, the BlackBox connects automatically.
3. The device uploads all pending CSV telemetry files directly into your CommandCenter pilot profile in less than 10 seconds.
4. Open your dashboard and your new flight will be waiting in your Mission Debrief queue!

5

MICROSD CARD REQUIREMENTS & FORMATTING

If replacing or formatting the internal MicroSD storage card:

Format Type: FAT32 (exFAT is NOT supported by embedded bootloaders).
Speed Class: Class 10 / U1 or higher (e.g. SanDisk Ultra, Samsung EVO).
Capacity: 8GB to 32GB (stores thousands of hours of high-rate telemetry).

CHAPTER 7: FAQ & TROUBLESHOOTING

KNOWLEDGE BASE
How does the BlackBox know when to start recording?
The BlackBox is fully autonomous. When you start your engine, the inductive RPM sensor and vibration threshold triggers automatically activate the flight recorder in under 0.5 seconds. You never need to remember to press "Record" on the launch field!
Why are my CHT numbers reading 0°C or erratic spikes?
Verify that the CHT thermocouple copper ring is seated completely flat under the spark plug and torqued to 18–20 Nm. Check the wiring terminal screws on the BlackBox harness to ensure the yellow (+) and red/black (-) thermocouple leads are not loose or inverted.
What does it mean if my Glide Polar shows higher sink than OEM spec?
This indicates aerodynamic drag degradation. Common causes include: fabric UV porosity loss (air leaking through top canopy fabric), shrunk rear C/D lines pulling down the trailing edge, or carrying excess pilot all-up weight beyond the wing's optimal certification weight window.
How do I clear the Demo Flight data once my physical BlackBox arrives?
You don't need to do anything! The moment your physical BlackBox uploads your first authentic flight over Wi-Fi, the system automatically detects real flight records in your account and permanently replaces all demo sandbox telemetry with your authentic flight history.
Can I use the CommandCenter without an internet connection on the field?
Yes! The CommandCenter is built as a Progressive Web App (PWA) with offline service-worker caching. You can review cached flight logs, graphs, and manuals anywhere in the field without cell reception.