与「aviation」相关的搜索结果

Supersonic. Mach 1.21. Quarterhorse Mk 2.1 is now the world’s first privately developed, unmanned supersonic jet and the fastest unmanned aircraft flying today. This flight makes Hermeus the fastest company in aviation history to go from founding to supersonic flight - exactly 364 days after the maiden flight of our first aircraft. Now, we fly faster. A special thanks to @DIU_x, Director @OwenWest91, Maj. Gen. Joe "Solo" Kunkel, and Deputy Director Kyle Norman.

Mohnish Pabrai explains how studying airplane crashes completely changed his approach to investing: "The checklist is a very useful tool, and it's helped us in aviation a lot. Air travel has become extremely safe mainly because of the use of checklists by pilots. The aviation checklist came about from examining failures. When a plane crashed, the FAA would always go in and try to figure out why the crash happened." He details the surprisingly pragmatic mathematics behind FAA safety protocols: "They have a definition of what a human life is worth. It used to be around $10 million a few years back. When they see a plane crash, they try to figure out: if nothing was done, how many lives would be lost over the next 5, 10, 20 years? They multiply that by that $10 million number. Then they look at the cost of asking the industry to make changes to aircraft design. They will only make those changes if the cost is less than the projected loss. You don't want air travel to be so expensive that we cannot get on an airplane, and you don't want planes crashing all the time." Pabrai applied this exact "post-crash" analysis to the stock market: "I did the same thing when I developed a pre-investment checklist. I looked at great minds of investing who had made investments that didn't work, but where the reason why it wouldn't work may have been obvious before the investment was made. For example, Berkshire buying Dexter Shoes. The concept that low-cost foreign manufacturing may impact the moat should have been visible to Warren and Charlie." He reveals the surprising results of categorizing the greatest failures of the world's best investors: "I looked at many, many investments that had failed by great minds and recategorized them into different buckets. It was really interesting. The single greatest reason why investments failed was because the businesses were leveraged. The second reason was some misunderstanding of the nature of the moat."

My 36th flight of 2025 was fram2. My 36th flight of 2026 is an Ultimate Aviation helicopter (ZS-RDW) flight from Icetugs Argus to Bouvet Island. This is my 1146th flight of all time. Bouvet Island (ISO 3166-2:BV) has become the 150th (of 249) country/territory I have visited. 🇧🇻

Jeffrey Greene, chairman of the Sino-American Aviation Heritage Foundation, recalled of the “Flying Tigers”: Chinese people risked their lives to save 64 U.S. airmen from the Doolittle Raid, prompting Japan’s massacre of 250,000 civilians. Such sacrifice is forever remembered, forging an unbreakable bond of friendship between the Chinese and American people.

The Lhasa Damxung Airport (1956) vs. Lhasa Konggar International Airport (2025): What a contrast! 🛬#Xizang# #Xizang60# Since the first passenger plane landed on the Roof of the World 60 years ago, 8 airports have been built in Xizang. Despite high altitude, extreme weather and rugged terrain, the region’s civil aviation sector has safely operated for 60 years. #XizangCivilAviation#

Chairman of Sino-American Aviation Heritage Foundation Jeffrey Greene: “No matter how bad things get, Americans and Chinese can work together as they did 80 years ago.” #FlyingTigers#

New Years Recap: “The mountains & rivers know me, and the motherland will not forget me.” Pay tribute to the astronauts and the dream of aviation through singing. Aviation, flying, and cosmic romance. Each satellite signal passed back is a beacon. To the future with @layzhang!