Receiver Autonomous Integrity Monitoring  (RAIM) A technique whereby a civil GNSS receiver/processor determines the integrity of the GNSS navigation signals without reference to sensors or non-DoD integrity systems other than the receiver itself. This determination is achieved by a consistency check among redundant pseudorange measurements.

Aero Linx: Find an Aviation Medical Examiner (AME) Search for an Aviation Medical Examiner (AME) in your area. This tool provides an up-to-date listing of AMEs, based on search criteria you select. Human Intervention Motivation Study (HIMS) AME Listing: HIMS (Human Intervention Motivation Study) AMEs are trained in evaluating airmen for substance- or alcohol-related conditions or other mental conditions. HIMS AMEs can provide sponsorship and monitoring for such conditions when required by the FAA for medical certification purposes.

“We have two pressurized fuel tanks linked to two pairs of thrusters. Rather than burning propellant, these are simpler ‘cold-gas’ thrusters designed specifically for such a small mission. And simpler means cheaper and smaller. The fuel is stored under pressure, then released through a tiny rocket nozzle. Even though it’s cold gas, we achieve a substantial velocity change by using liquid butane that turns to gas as it exits. Storing it as a liquid, like in a cigarette lighter, allows us to pack as many butane molecules as possible inside the small available volume – its liquid form being some 1000 times denser than its gas.” Source: Tor-Arne Grönland, head of NanoSpace, describing how ESA&rsquo