Here is the list of ten
- 'Greener' aviation technologies – including emission reduction and noise reduction technologies as used in the Federal Aviation Administration (FAA)'s Continuous Low Emissions, Energy and Noise (CLEEN) program, and the European Environmentally Friendly Engine (EFE) program and Clean Sky Joint Technology Initiative. For more see this AIAA press release.
- Alternative fuels – including biofuels, as promoted by the FAA's Commercial Aviation Alternative Fuels Initiative (CAAFI), and the recent FAA grant to the X Prize Foundation to spur development of renewable aviation fuels and technologies. For more see this AIAA press release.
- High speed flight technologies – such as supersonic and hypersonic aerodynamics, sonic boom reduction technology, and thermal management aids. For more reading, check out Supersonic travel may return
- Efficient propulsion technologies – including open rotors and geared turbofans, such as those used in the European DREAM (valiDation Radical Engine Architecture systems) program.
- Active flow technologies – such as plasma actuators.
- Advanced materials – such as nanotechnology and composites.
- Active structures – such as shape memory alloys, morphing, and flapping.
- Health management – such as monitoring, prognostics, and self-healing.
- Remote sensing technologies – including unmanned aerial vehicles (UAVs) and satellites such as those used in NASA's Global Earth Observation System of Systems (GEOSS) program.
- Advanced space propulsion technologies – including plasma-based propulsion such as the Variable Specific Impulse Magnetoplasma Rocket, and solar sail technologies.
You can access a pdf of the AIAA announcement here AIAA Names Top Ten Emerging Aerospace Technologies of 2009: Download PDF