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Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?


To: Julius Wong who wrote (208871)11/9/2024 11:29:13 PM
From: TobagoJack1 Recommendation

Recommended By
Julius Wong

  Respond to of 218361
 
interesting

scmp.com

Chinese women wore tank tops, transparent outfits 800 years, Song dynasty find suggests
Published: 10:00am, 10 Nov 2024

Digital reconstruction of treasure trove found in Song dynasty tomb reveals forward-thinking fashion of the day, according to scientists



The day-to-day clothing worn by a young woman from the Song dynasty, around 800 years ago, has been digitally reconstructed by Chinese scientists using the latest technology.

They discovered that fashion concepts during the Song dynasty (960-1279) were exceptionally open and avant-garde. Women would wear a moxiong – similar to a modern-day tank top – in public, and over it, a thin, almost translucent silk robe.

“The Song dynasty’s moxiong had triangular patches sewn along the edge of the chest as cover [for privacy]. When worn, the strings on the chest were tied behind the neck, while the strings on both sides of the waist were tied at the back,” the project team led by Liu Anding, associate professor at Wuhan Textile University, wrote in a peer-reviewed paper published in the university’s academic journal last week.

“Paired with a lightweight robe made of floral gauze fabric, the underlying moxiong was faintly visible,” Liu and her colleagues said. “The neck and chest became the focal points of visual aesthetics, reflecting a forward-thinking and open mindset towards dressing.”

The clothes used in the research came from an ancient tomb in the southeastern province of Fujian.


A moxiong, similar to a modern-day tank top, discovered in noble lady Huang Sheng’s tomb, who died in 1243. Photo: Wuhan Textile University

In 1975, an expansion project at a school in Fuzhou uncovered the family tomb of Zhao Yujun, a royal aristocrat from the Southern Song dynasty. Zhao’s tomb had been damaged by grave robbers, but the tomb of his wife, Huang Sheng, remained intact.

Inside Huang’s tomb were discovered more than 400 treasures, including a vast array of previously unseen silk fabrics.

Huang’s father was the mayor of Quanzhou, an important port city in Fujian, and her family was exceptionally wealthy. After losing her mother at a young age, she lived with her grandmother, who was well-educated and also frequently hosted guests at home.

Under her grandmother’s influence, Huang grew up to be a graceful young lady with a “gentle demeanour” and her reputation “spread throughout the city”, according to her epitaph.

Huang married Zhao at the age of 16, and they were very much in love. However, she died due to illness just a year later in 1243. A grief-stricken Zhao buried her with a vast collection of treasures, including her entire wardrobe.

These treasures survived so well because the tomb was constructed using a building material similar to cement, which made it extremely sturdy and well sealed.

China during the Song dynasty had many similarities to modern society.

According to historical records, citizens at that time used paper money for shopping, read privately published newspapers which reported on court gossip, ordered takeaway, and stayed out at entertainment venues until the early hours of the morning.



To: Julius Wong who wrote (208871)11/10/2024 1:12:29 AM
From: TobagoJack  Respond to of 218361
 
might be the NanTianMen (South Gate) project, that be near-spacial domination fighter with duel-mode engine for air-breathing and vacuum operation, supposedly to be operational 2035 ... either model or actual vehicle released for Zhuhai airshow now underway, and if so, test flight either close or already done

time to pay attention to the matter, for the gadget once realised ought to be able to hunt down less able vehicles at will, ala in a barrel








To: Julius Wong who wrote (208871)11/10/2024 9:23:19 PM
From: TobagoJack1 Recommendation

Recommended By
togrok

  Respond to of 218361
 
watch & brief on possible NanTianMen project

scmp.com

Chinese scientists propose ram-rotor detonation engine for hypersonic flight
Updated: 12:16pm, 8 Nov 2024

Tsinghua researchers combine ramjet-based rotor compressor with a detonation engine which they say advances propulsion technology



Chinese scientists proposing a new concept for a hypersonic engine with improved continuous thrust, lower start-up speeds and enhanced performance have inserted a ramjet into a rotary detonation engine.

Detonation engines use detonation waves instead of traditional combustion to improve thermal cycle efficiency and propulsion performance. Because of their simple structure and high thrust-to-weight ratio, such engines have been used for flight tests in many countries.

Although various types of detonation engines have been proposed, each traditional design has limitations: pulse detonation engines lack continuous thrust; oblique detonation engines require very high start-up speeds; and rotary detonation engines do not achieve ideal total pressure gains.


Typical structures of RRDE. Credit: Wang Bing

Inspired by rotary engines, researchers combined a ramjet-based rotor compressor with a detonation engine to propose a new design, termed the Ram-Rotor Detonation Engine (RRDE).

This development, published as a cover article in the 11th issue of the Chinese Journal of Aeronautics by Wen Haocheng and Wang Bing from Tsinghua University, represents a significant advancement in propulsion technology.

The RRDE features a rotating rotor with blades housed within a stationary casing. The engine operates by compressing the combustible mixture, initiating detonation combustion and expanding the gas within variable channels between the blades.

By adjusting the rotor speed, the detonation wave is maintained in a relatively fixed position within the engine, closely approximating the ideal total pressure gain and thermodynamic efficiency of a detonation cycle.

The engine can adapt to varying inlet airspeeds by modifying the rotor speed or adding components, such as compressors and diffusers. Additionally, it shows resilience to fluctuations in air composition.

Theoretical performance analysis shows that with an optimised hydrogen-air mix, the RRDE’s total pressure gain could exceed three times the pressure at the inlet. Numerical simulations confirmed stable operation, with intake speeds reaching Mach 4.2 – or 4.2 times the speed of sound – and combustion gas temperatures around 2,100 Kelvin (1,827 degrees Celsius or 3,320 Fahrenheit).

“The blade profile in this study is only a preliminary design, and an optimised RRDE blade profile should allow for a wider range of inlet parameters,” Wang said in the paper.

Chinese plane designed to travel twice as fast as Concorde completes test flight

However, Wang acknowledged several challenges. Unlike conventional detonation engines, which lack moving parts, this complex structure could increase manufacturing difficulty.

Wang wrote that further research was needed on detonation wave propagation mechanics, high-speed rotor fabrication, thermal protection, and the selection of composite materials for blade manufacturing.