12月全球新接订单有所下滑，油轮新接订单继续增长。

报告分析了国内外航空发动机行业的基本情况，我们认为随着航空发动机重大专项有望于近期落地，标志着“飞发分离”的国家发动机公司也将挂牌成立，制约我国航空发动机产业的资金和体制问题有望得到改善，整个行业将迎来历史性的发展机遇，产业链相关公司将充分受益，因此给予行业投资评级“推荐”。

A fuel system consists of storage tanks, valves, pumps, filters, metering devices, fuel lines, and monitoring devices. It allows the fuel to pass to the auxiliary power unit (APU) and propulsion system. These devices are designed, developed, and certified under the Code of Federal Regulations (14 CFR) guidelines.

Drones are UAVs. Their flight is controlled with a handheld remote or GPS remote. GPS is used to track the drones. The gyrometer and accelerometer, which are attached to the drones, are used to control the drones during flight. Drones are primarily used for tasks that are of high risk to human life. They are extensively used for surveillance and rescue, emergency response, high-altitude imaging, forest-fire monitoring, flood mapping, humanitarian aid, product delivery, petroleum-spill monitoring, and Internet connectivity, as well as in the photography and film industry. Drones are used for environmental monitoring and mapping, soil-moisture imaging, hyperspectral imaging, plume dispersion and tracking, in situ atmospheric monitoring, and aerosol-source determination, too.

Aircraft seat actuation systems provide comfortable seating for the passengers in commercial aircraft and private jets. The automated systems allow passengers to adjust their seating position as per their comfort level. The seat actuators are an essential component of aircraft cabins in a modern aircraft. With designs to provide correct seating positions for travelers, these systems assist in avoiding lumbar pains over long-haul air travel.