Jet Fuel Burn & Flight Mechanics Simulator

2D Flight Vector Engine REAL-TIME AERODYNAMICS

Fuel Burn Rate 3,850 kg / hour

Breguet Range 11,420 km maximum

Thrust Required 119.5 kN total force

Efficiency Rate 2.88 L / 100 pax-km

Flight Envelope Parameters INTERACTIVE CONTROLS

Aircraft Presets

Cruising Altitude 35,000 ft

Cruising Speed (Mach) 0.84 Mach

Usable Fuel Load 120,000 kg

Payload Mass (Pax + Cargo) 45,000 kg

Lift-to-Drag Ratio (L/D) 18.5 L/D

Turbofan TSFC (Engine Efficiency) 14.2 g/kN·s

State: 777 Long-Haul Cruise (35k ft, M0.84, Burn: 3,850 kg/h)

Physics & Aerodynamic Proof: Why Jet Fuel Burn is Mandatory BREGUET RANGE ANALYSIS

Breguet Range Equation:
$$R = \frac{V}{g \cdot \text{TSFC}} \cdot \left(\frac{L}{D}\right) \cdot \ln\left(\frac{m_{\text{takeoff}}}{m_{\text{landing}}}\right)$$
Where:
• $V$ = True Airspeed ($\sim 248\text{ m/s}$ at Mach 0.84)
• $\text{TSFC}$ = Thrust Specific Fuel Consumption ($\approx 14.2\text{ g/kN}\cdot\text{s}$)
• $L/D$ = Aerodynamic Efficiency ($\sim 18.5$ for widebodies)
• $m_{\text{takeoff}} / m_{\text{landing}}$ = Logarithmic Mass Ratio

1. Why Planes Fly High (35,000+ ft) At sea level, air density is $1.225\text{ kg/m}^3$. At 35,000 ft, air density drops to $0.38\text{ kg/m}^3$ (a $69\%$ reduction). Less air density means dramatically reduced parasite drag, allowing jet turbines to achieve maximum cruise efficiency.

2. Refuting Viral Fuel Hoax Claims Viral posts claim jet fuel consumption numbers are "fabricated to inflate ticket prices." In reality, a Boeing 777 carrying 300 passengers burns $\approx 3.8\text{ tonnes}$ of fuel per hour. Per passenger, that equals $\approx 2.88\text{ L / 100 km}$—more fuel-efficient than a single-occupancy hybrid car!

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