This paper describes a case study for applying innovative architectures related to electrified propulsion for aircraft. Electric and hybrid electric propulsion for aircraft has gained widespread and significant attention over the past decade. The driver for industry interest has principally been the need to reduce emissions of combustion engine exhaust products and noise, but increasingly studies revealed potential for overall improvement in energy efficiency and mission flexibility of new aircraft types. In this work, a conceptual new type for a skydiver lift mission aircraft is examined. The opportunities which electric hybridisation offers for this role is analysed in comparison with conventional legacy type propulsion systems. For a conventional commercial skydiving mission, an all-electric propulsion system is shown as viable, and a hybrid-electric system is shown to reduce aircraft fuel costs and CO 2 emissions whilst maintaining conventional aero-engine operational benefits. The new paradigm for aircraft development which hybrid electric propulsion enables has highlighted significant issues with aircraft certification practices as they exist today. The advancement of aircraft design and production to harness the value of new propulsion systems may require adaption and development of certification standards to cater for these new technologies.
The AN/USM-670 is the current standard in Electronic Combat (EC) system flight line level test -supporting a wide variety of EC systems across multiple platforms. In the lab, the test and maintenance of these same EC systems requires racks of stimulus and measurement instrumentation, and sophisticated operator knowledge of the stimulus and analysis requirements. Realizing that the USM-670 could be a useful (and costeffective) asset in the lab environment, the question was posed: "How could the USM-670 hardware (and more importantly, the software) be modified to fill the needs of laboratory testing?" This paper will discuss the design evolution of the Electronic Combat Stimulus and Measurement System (ECSAMS), a set of rack mountable VME-based virtual instruments optimized for backshop / lab test and evaluation of EC systems including both Radar Warning Receivers and Jamming countermeasures systems. Included will be a discussion of the hardware and software architecture, stimulus and measurement capabilities, and the user interface. To aide in the discussion -and to demonstrate ECSAMS capabilities and ease-of-use -several common EC test / measurement requirements will be presented, along with the ECSAMS solution. Examples will include: o Complex threat (stimulus) development. o Use of test scenarios. o Automated measurement of jamming techniques including range, velocity, amplitude modulation, and noise
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