您现在的位置是:US hypersonic vehicles may soon ‘sweat’ to stay cool, says RTX >>正文
US hypersonic vehicles may soon ‘sweat’ to stay cool, says RTX
上海品茶网 - 夜上海最新论坛社区 - 上海千花论坛34人已围观
简介By subscribing, you agree to our Terms of Use and Policies You may unsubscribe at any time.Imagine f...
By subscribing, you agree to our Terms of Use and Policies You may unsubscribe at any time.
Imagine flying faster than five times the speed of sound and reaching any destination in the world in hours. This is the vision of hypersonic flight, which can potentially transform the future of aviation.
Ablation
However, achieving this feat is not easy, as it involves overcoming extreme temperatures of over 2,200 °C (4,000 °F) that can melt or damage most materials. The phenomenon called 'ablation' deforms any vehicle's angular shape post the speed of Mach 5 due to intense heat, which affects the overall performance of the vehicle and efficiency.
To solve this problem, the RTX Technology Research Center has developed a novel idea: make the hypersonic vehicles sweat like humans. The center, which is working under a contract from the US Defense Advanced Research Projects Agency (DARPA), has developed a cooling system prototype that mimics the human body's natural way of regulating heat.
See Also Related- USAF considers mounting hypersonic missiles on B-1B ‘Lancer’
- Florida test was the Army's 'Dark Eagle' hypersonic missile
- Venus Stargazer: Hypersonic jet could reach Tokyo from San Francisco in just one hour
- France test launches its V-Max hypersonic glider for first time
The system consists of a network of tiny channels embedded in the leading edges of the hypersonic vehicle, which are the parts that face the most heat. These channels deliver a liquid coolant to the vehicle's surface, where it evaporates and takes away heat. This way, the vehicle can maintain its shape and aerodynamics, which is crucial for stable and efficient flight.
John Sharon, the center's project team leader, said that they used predictive modeling and advanced micro-machining to create a test article that resembled a credit card with a wedge shape. They then exposed it to two different heat sources: a burner rig that was like a giant crème brûlée torch and an electrical arc that simulated the conditions of hypersonic flight.
The team found that the test article survived both tests without any significant damage, proving the feasibility of their concept. The next step, Sharon said, is to scale up the test article to the size of an actual hypersonic vehicle and make the channels even smaller for better performance. He added that the same technology could also be used for other applications, such as protecting gas turbine blades from heat.
Sharon praised his team for their innovative work and said they faced a tough challenge. "When you're flying five-plus times the speed of sound, the temperature can rise very quickly – in a fraction of a second," he said. "The folks on the team involved with modeling did an awesome job estimating how long the test article would survive."
Tags:
转载:欢迎各位朋友分享到网络,但转载请说明文章出处“上海品茶网 - 夜上海最新论坛社区 - 上海千花论坛”。http://www.jz08.com.cn/news/59358.html
相关文章
Ethereum price is in a consolidation phase
US hypersonic vehicles may soon ‘sweat’ to stay cool, says RTXEthereum’s price has spent the past couple of days consolidating right under its all-time high...
阅读更多
Barclays U.K bans Binance deposits
US hypersonic vehicles may soon ‘sweat’ to stay cool, says RTXCustomers of the UK’s Barclays bank can no longer transfer funds to the Binance crypto exchang...
阅读更多
Bitbot picks momentum as Avalanche leads altcoin recovery
US hypersonic vehicles may soon ‘sweat’ to stay cool, says RTXAvalanche has spiked double-digits amid new momentum forecast for rally to $100.BITBOT could be the...
阅读更多
热门文章
最新文章
Where to buy OKExChain coin: OKT surges 50%
Coinbase holds 11% of all crypto assets: Messari
Bitcoin and Ethereum price begin road to recovery after bearish week
IOTA defends $0.55 support region
Bitcoin Cash Price: BCH Is Now Above $700
Britney Spears and Tinashe Channel Eyes Wide Shut in "Slumber Party" Music Video