Alcock, JW

Japanese: オールコック，J.W. - おーるこっく

...flight using static or dynamic aerodynamic forces generated by the air around the Earth. As the distance from the Earth's surface increases, the density of the air decreases, and the aerodynamic forces generated by it weaken proportionately. Therefore, the practical altitude at which modern aircraft can continue horizontal flight is roughly in the range of 0 to 20 km. The highest altitude recorded in horizontal flight to date is 25.9 km (1976), and the highest altitude reached by a rocket plane launched from a mother aircraft is 95.9 km (1962).

From St. John's

…In 1901, G. Marconi was the first to receive a wireless telegraph signal across the Atlantic Ocean, and there is a museum commemorating this. In 1919, British aviator John William Alcock (1892-1919) and A.W. Brown made a successful transatlantic flight from here. [Masai Yasuo] …

*Some of the terminology that mentions "Alcock, JW" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…地球の周りにある空気によって生ずる静的あるいは動的な空気力を利用して飛行すること。地表から離れるにしたがい，空気の密度が減るので，生ずる空気力がそれに比例して弱くなる。したがって，現代の航空機が水平飛行を続けられる実用高度はだいたい0～20kmの範囲である。これまでの水平飛行における高度の最高記録は25.9km(1976)，母機から進発したロケット機の到達高度としては95.9km(1962)の記録がある。…