...cand Realitatea se intalneste cu avionul electric.. Kerosenul castiga:
https://www.telegraph.co.uk/business/2026/01/22/labour-donor-dale-vince-pulls-plug-on-net-zero-airline/
Nu s-au mai gasit fonduri (investori..) pentru un proiect care aproape din start era imposibil pentru ca echivalentul unui litru de kerosen consumat in electricitate e de 10kW..
Oare cei care s-au gandit ca ar fo posibil se doteze un avion cu baterii pentru o distanta Londra - Paris.. AI-ul nu le dadea acelasi raspuns ca si mine? Pentru 3600 tone de kerosen folosit in acest zbor este neboie de o baterie de 144 de tone!!!
Energy Content of 3.6 Tonnes of Jet Fuel
Mass: 3,600 kg
Energy Density: Jet fuel has a specific energy of roughly 43–46 MJ/kg (approx. 12,000 Wh/kg or 12 kWh/kg).
Total Energy:
3,600 kg×12 kWh/kg=43,200 kWh3 comma 600 kg cross 12 kWh/kg equals 43 comma 200 kWh
3,600 kg×12 kWh/kg=𝟒𝟑,𝟐𝟎𝟎 kWh
(or 43.2 MWh) of energy.
2. Battery Equivalent (Current Technology)
Current Battery Energy Density: State-of-the-art lithium-ion cells provide roughly 250–300 Wh/kg (0.25–0.3 kWh/kg) at the pack level.
Required Battery Mass: To get 43,200 kWh, you would need:
43,200 kWh0.3 kWh/kg≈144,000 kg (144 tonnes)the fraction with numerator 43 comma 200 kWh and denominator 0.3 kWh/kg end-fraction is approximately equal to 144 comma 000 kg (144 tonnes)
43,200 kWh0.3 kWh/kg≈𝟏𝟒𝟒,𝟎𝟎𝟎 kg (144 tonnes)
Comparison: 3.6 tonnes of fuel would require over 140 tonnes of batteries to provide the same energy, which is over 40 times the weight of the fuel it replaces.
3. Key Factors
Weight Disparity: Jet fuel has a specific energy nearly 50 times higher than current lithium-ion batteries.
Efficiency Factor: While electric motors are more efficient (approx. 90%) than jet engines (approx. 30–40%), the sheer weight difference makes battery-only flights unfeasible for anything other than very short-range, small aircraft.
Takeoff Weight: In a traditional plane, 3.6 tonnes of fuel is consumed during flight, reducing weight. A 144-tonne battery pack remains at full weight for the entire flight, requiring significantly more energy just to stay in the air.
Conclusion: 3.6 tonnes of aviation fuel (~43,200 kWh) would require roughly 140+ tonnes of current-gen batteries, making direct replacement impossible for commercial aviation.