.
Separate data, application, and transport layers of the onboard UA communications architecture.
.
Develop and register legacy and developing system metadata descriptions using DISA’s DoD Metadata Registry and Clearinghouse. This exposes data and data characteristics to all interested/authorized users, both intended and unintended, and greatly simplifies development of interfaces to disparate sources of data.
.
Migrate from legacy radios to JTRS compliant clusters.
.
Comply with the SCA, use or develop software-based waveforms for all RF and optical physical interfaces.
.
Coordinate all future radio procurements with the JTRS Joint Program Office.
.
Procure JTRS compliant hardware when available.
.
Procure SCA compliant software when available.
.
Make maximum use of the capabilities provided by JTRS compliant hardware and SCA
compliant software.
.
Follow Spectrum Use Policy.
.
Transition to IP based wireless connections in the near term.
.
Establish and meet firm transition dates from non-DoD approved spectrum to DoD spectrum recommendations.
APPENDIX C - COMMUNICATIONS
Page C-23
. Ensure systems are developed to operate in authorized spectrum anywhere in the world. End goal: All RF based systems use spectrum appropriate to their size, class and individual requirements.
APPENDIX C - COMMUNICATIONS
Page C-24
APPENDIX D: TECHNOLOGIES
PROPULSION
Turbine
UA are rapidly being developed for eventual integration into the Army, Naval and Air Force fleets. Today’s battlefield contains aircraft that have two classes of turbine engines: 1) man-rated for manned platforms and 2) expendables for cruise missiles. UA service has brought about a third limited-life class, which must support the unique role of UA. The current development of systems, such as Global Hawk and J-UCAS, which occupy ISR, SEAD and deep strike missions, have shown that existing “off-the-shelf” propulsion systems are placed under such heavy demands that mission capability and operational utility can be severely limited. Future UA will address combat scenarios and are projected to require even greater demands for better fuel consumption, thrust, power extraction, cost, low signature and distortion tolerance.
. Integrated High Performance Turbine Engine Technology (IHPTET) program. The IHPTET program is a joint service, NASA, DARPA and industry initiative that began in 1988. It is a three-phase program with goals of doubling propulsion capability by 2005. IHPTET is also the cornerstone of
U.S. military turbine engine technology development. One of the three IHPTET classes of engines is the Joint Expendable Turbine Engine Concept (JETEC) program. This joint Air Force/Navy effort, will demonstrate several key UA-applicable technologies including advanced aerodynamics, lubeless bearings, high-temp low cost hot Sections, and low-cost manufacturing techniques. Using data from laboratory research, trade studies, and existing systems, the payoffs/tradeoffs for each of the critical technologies will be analyzed in terms of engine performance, cost, and storability. (See Figure D-1 and Figure D-2.)
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