air density causes blades to stall
Because the air is thinner there
An inverse relationship.
the lowest flying satilite is DAN 100kl above the earths surface
Pasadena is 263 meters above sea level.
A helicopter blade works the same way as a wing on a fixed wing aircraft. The air flowing faster over the top of the airfoil generates lift. When a helicopter flies at a high altitude the air gets thinner. Because the air is thinner, more pitch on the blades is needed to keep the helicopter in the air. When too much pitch is on the blades the blades stall, air moves past the bottom of the blade and creates a vortex behind the top of the blade. All lift is lost and you lose altitude.
Because the air is thinner there
An inverse relationship.
The vast majority of helicopters cannot fly above around 8,000 ft. The SA.315 Lama however set a record by flying at 41,000 ft. It regularly operates at over 20,000 ft. It is the worlds highest flying helicopter. In India it is called the Chetak.Helicopters themselves aren't the limiting factor in their ceiling. Above 12,000 feet, pilot and crew need to be on supplemental oxygen. That said, a helicopter's VTOL ability is of little value at altitude so their role means they stay within a few thousand feet AGL.
The adverbs "high above" modify the verb flying.
731.5 meters above sea level.
Mount Elbrus is 5,642 meters above sea level
Mount Pelee is 1,397 meters above sea level
flying is 20-30 seconds well that's what i think!
the lowest flying satilite is DAN 100kl above the earths surface
The altitude in Nepal ranges from 60 meters above sea level to 8,848 meters
cirrus clouds are above 6000 meters and are the highest of all clouds
The Alps range from 2007 meters above sea level to 4808 meters above sea level.