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Aerodynamics Series

레이블이 Chinese인 게시물을 표시합니다. 모든 게시물 표시
레이블이 Chinese인 게시물을 표시합니다. 모든 게시물 표시

2023년 2월 12일 일요일

New Chinnise 6th Generation Fighter ?

 

* Related my previous articles for 6th Gen. Fighters (Also for Hypersonic MIRV Air-to-Air Missile)
   -> History of Air-warfare Part 2 (2017.04.21)
   -> French-German's proposal for replacement of Tornado jet (2018.01.28)
   -> USAF-2030 Commercial (2018.03.27)
   -> High AoA capability become useless in future air-warfare? (laser, stealth, hypersonic, etc) (2018.05.04)
   -> Current Technical Difficulties in Hypersonic MIRV Air to Air Missile (2018.05.10)
   -> Small-note-for-SRAAM and Their Futures (2018.05.23)
   -> French-German's proposal for replacement of Tornado jet (2) (2018.07.06)
   -> New-fighter-jet-for-UK:Tempest (2018.07.16)
   -> Example-of-booster-with-SRAAM : New Solution of Long-Range Air-to-Air Missile? (2018.07.20)
   -> More Information for UK's Tempest (2018.08.04)
   -> Small Note for Concept of 6th Generation Fighters : And Future Aerial-Warfare (2018.09.02)


  * Related my previous articles for Stealth Tankers (USN's MQ-25 and USAF's Stealth Tanker project)
   -> Boeing's-mq-25-candidate is revealed (2018.03.08)
   -> Lockheed's-mq-25-candidate is-revealed (2018.03.26)
   -> General Atomics'-mq-25-candidate is-revealed (2018.04.02)
   -> Additional-image-is-revealed-for MQ-25 of Boeing (2018.04.07)
   -> Additional-image-is-released-for MQ-25 of Lockheed (2018.04.09)
   -> Stealth-tanker-model-from-AFRL and Lockheed (2018.06.30)
   -> Boeing's design is Now MQ-25 (2018.08.31)
   -> Boeing MQ-25 - Additional Images (2018.08.31) 




1. 3D Cutaway of Chinise 6th Generation fighter model

 Like the other 6th generation fighter models, the chinise one also has wide wing area with two engines; combination of the two will provide more range, fuel, and capacity for electronics. Indeed, configuration is very similar to other countries' proposal. 

Interesting points are splited complex LEF, relatively small engine, and distributed aparture sensors. LEF will provide efficient cruise and high AoA envelope while the small engine will be adaptive for fuel efficiency. The distributed sensor will give better S-A capability.


2. CFD? of 6th generation fighter planform

 At unknown Mach number, Cp value is shown for moderate AoA region. Compared to Fig. 1, this shape is more focusing on high speed cruise; more swept for both LERX and main-wing.






3. CG

 Unlike upper two pictures, it is more conventional and similar to FCAS. Caret style inlet is remarkable because J-20 chosen Divertless style. 




2018년 12월 20일 목요일

LRASM is now on EOC status


 LM's LRASM based on JASSM-ER is now on operational status.

https://news.lockheedmartin.com/2018-12-18-Lockheed-Martins-Long-Range-Anti-Ship-Missile-Reaches-Early-Operational-Capability-EOC-Status-on-U-S-Air-Force-B-1B

https://www.airforce-technology.com/news/usaf-b-1b-conducts-dual-missile-test-using-lockheed-lrasms/




 Stealth, Sensor, and Complex attack planning capability is emphasized on this video, and it is interesting to watch 'USAF's Anti-Ship capability is now in development phase. 

 Probably rise of China Navy could affect the development of that kind of missiles in USAF. 

 Ramjet missiles mostly developed in Russia, China, and India emphasize their short-reaction-time or charging capability against Aegis ships while US' new missile tactics is in stealth. 

 Some report shows missile should be more than Mach 5 or subsonic-stealth to survive from modern air-defense system. Indeed, US' next high speed anti-ship missile is probably more than high supersonic, and it take more time than current LRASM. 

 So, this missile can be stop-gap solution before the silver-bullet type missile will being active. 

2018년 5월 19일 토요일

Project Lavi


Image result for lavi jet

http://www.icas.org/ICAS_ARCHIVE/ICAS1988/ICAS-88-1.6.3.pdf

Israel's old project, Lavi, is development of light weight jet fighter using F404 engine, similar size of FA-50 or F-20. Linked paper presented initial sizing study of Lavi while vid. shows effort of development. 

There was a rumor that effort of Lavi design was delivered to China's J-10; both aircraft have similar planform configuration except size of engine (F404 vs AL31F).

2018년 5월 9일 수요일

Chinese New Stealth Bomber?

Short Video of Chinese Stealth Bomber


As short video from China, they released very similar aircraft to US' B-21; even angle of shot for veiled aircraft is almost same. Chinese already showed their attempt to develop such a aircraft, however, it is first time to show specific intent. Still, there is no specific details of the aircraft, so, I could not judge any of this new bomber.