c**i
发帖数: 6973 | 1 (1) Unmanned aerial warfare | Flight of the Drones; Why the future of air
power belongs to unmanned systems. Economist, Oct 8, 2011.
http://www.economist.com/node/21531433
("Some [drones] are big aircraft, such as the RQ-4A Global Hawk, a jet-
engined, all-weather spy plane, equipped with advanced synthetic aperture
radar, that costs more than an F-18 fighter, can survey 53,000 square miles
of ground in a day and has flown from America to Australia without
refuelling.
My cooment:
(a) Besides the quotation above, please read only the latter half, from the
paragraph that starts with the clause: "As China and other countries develop
more accurate ballistic and cruise missiles, able to hit moving targets 1,
000 miles away." The first half is introductory.
(b) One highlight in the latter half: "big UAS can already take off and land
automatically."
(2) Kyunghee Park, Shipbuilding; Here is one market China hasn't cracked.
Bloomberg BusinessWeek, Oct 17, 2011 (cover date).
http://www.businessweek.com/magazine
/shipbuilding-the-market-china-hasnt-cracked-10132011.html
Quote:
"South Korean shipbuilders’ focus on the most complicated and expensive
vessels has allowed them to double their share of global orders this year as
China’s low-end strategy fails to pay off.
"Hyundai Heavy Industries, Daewoo Shipbuilding & Marine Engineering, and
Samsung Heavy Industries, the world’s three largest shipyards, have won 40
percent of orders so far in 2011 as higher oil prices spur demand for
liquefied-natural gas tankers and oil drilling ships. Chinese yards’ 2011
contract tally is valued at only about a quarter of Korea’s, based on data
from Clarkson Research Services, because of a glut of lower-margin commodity
transport ships that comprise the bulk of China’s production.
"A 19 percent slump in global ship orders this year has mostly hit Chinese
yards, |
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