❓ why
Why do planes fly at around 35,000 feet?
aviationphysics
Quick Answer
At cruising altitude the thin air reduces drag and saves fuel, while flying above most weather and turbulence.
The Full Story
Jet airliners typically cruise between about 31,000 and 42,000 feet (roughly 9.5 to 13 km). The air there is much thinner, so there is less drag and engines burn less fuel for the same speed. Jet engines are also efficient in the cold, thin air, as long as there is enough oxygen for combustion and enough air for the wings to create lift. Cruising high keeps planes above most clouds, storms and turbulence in the lower atmosphere. The exact altitude depends on aircraft weight, winds, air-traffic control and the direction of travel.
Key Facts
1.Typical cruise altitude is 31,000–42,000 ft
2.Thin air reduces drag and fuel use
3.Cruising high avoids most weather
YouTube Angle
Suggested video title for this topic:
"Why your flight climbs to 35,000 feet — and not higher"