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Haiti has a bimodal rainy season, with precipitation in spring and fall. The seeds could have been moistened a few days before the drop, to start germination. The project never came to fruition. Seed balls were experimentally used in aerial seeding in Kenya in 2016. [10] [11] This was an attempt to improve the yield of standard aerial seeding.
The Bristol Type 171 Sycamore is an early helicopter developed and built by the helicopter division of the Bristol Aeroplane Company.The name refers to the seeds of the sycamore tree, Acer pseudoplatanus, which fall with a rotating motion. [2]
Male flowers Seeds of Fraxinus excelsior, popularly known as "keys" or "helicopter seeds", are a type of fruit known as a samara. It is a large deciduous tree growing to 12–18 m (39–59 ft) (exceptionally to 43 m or 141 ft) tall with a trunk up to 2 m (6.6 ft) (exceptionally to 3.5 m or 11 ft) diameter, with a tall, narrow crown. [2]
The concept is similar to the whirling helicopter seeds that fall from some trees. The name gyropter is sometimes applied to monocopters in which the entire aircraft rotates about its center of mass as it flies. The name "monocopter" has also been applied to the personal jet pack constructed by Andreas Petzoldt. [1]
Tandem-rotor helicopter lifting a log Helicopter pruning. Heli-logging, or helicopter logging, is a method of logging that uses helicopters to remove cut trees from forests by lifting them on cables attached to a helicopter. [1] Helicopter logging is often used in inaccessible areas of forests. Because the use of helicopters reduces the level ...
The helicopter that crashed Monday, a 1999 Airbus Helicopter EC-135T1, should have been replaced prior to its 12-year inspection in 2011, the 80-plus page report by Law Enforcement Aviation ...
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The collapsing mast also destroyed the transmitter building. Six persons were killed. SES8 Tower, Mount Burr, South Australia, 1965: Guyed steel lattice mast 200 Structural failure during guy wire tension testing KXJB-TV mast, Galesburg, North Dakota: February 14, 1968: Guyed steel lattice mast 628 Helicopter collision WLBT Tower, Raymond ...