COLORADO SPRINGS — Aerojet Rocketdyne has studied what it would take to replace the Russian-built RD-180 and AJ-26 rocket engines used in the Atlas V and Antares launch vehicles. The answer is at least four years, with enough money, said Julie Van Kleeck, Aerojet Rocketdyne vice president for Advanced Space & Launch Systems, when asked what it would take to develop new engines domestically if Russia shuts off the supply over the Crimean crisis.
BEIJING — The addition of Avic J-10 and Sukhoi Su-30 fighters in an annual joint naval exercise will increase the challenges for the Chinese and Russian participants, Chinese media report. Chinese ships in the May 20-25 exercise will include the Type 052C (Luyang II) air-defense destroyer Zhengzhou and the Sovremenny class surface-warfare destroyer Ningbo. The fighters will be among nine aircraft participating, National Defense University professor Li Li tells state television network CCTV.