Any 0.46 two stroke engine at 10,000 rpm sucks from the surroundings as much as 75 cubic inch of air each second.

That is the air contained in a cube with width's sides of 4.2 inches each second.

Dust, little stones, green or dry grass, metal, charcoal and carbon particles (which are very hard) can be ingested by the engine during take-off.

Actually, cellulose has a crystaline structure that can be abrasive on metals, just like paper towels are.