Science: An Improved-Orion sounding rocket is tentatively scheduled to be launched from the Poker Flat Research Range, Fairbanks, Alaska, during Winter 2007. The primary science objective of SRP-5 Project ISIS (Ionospheric Science and Inertial Sensing) is to measure the plasma density structure of the high latitude D-region ionosphere above Poker Flat Research Range . This will be accomplished using a plasma probe, radio receivers, and other sensors. Project ISIS will also study atmospheric attenuation of ultra-violet rays in collaboration with Tokai University of Japan. Engineering: The primary engineering objective of this mission is to develop and flight-qualify a Low-Cost Attitude Determination System (LCARS). The LCARS is primarily intended as a development step toward a low cost attitude control system, though the ISIS implementation of LCARS will be limited to attitude reporting. LCARS will utilize a gyro system and solar sensor system designed by UAF. Develop and flight qualify a low-cost situational awareness capability that will provide real time knowledge of payload attitude and trajectory. Provide diagnostic data sufficient to validate operation and flight qualify all student built components. Perform temperature measurements throughout the payload to validate thermal models. Standardize electrical and mechanical interfaces between components to facilitate the ability to adapt student deisgned componetns to future payloads. Programmatic Objectives: Provide professional development opportunities for students to be invlved in all phases of a sounding rocket mission at Poker Flats Research Range as they wokr together as an interdisciplinary design team. Conduct experiments that make a contribution to the NASA/NSROC sounding rocket program. Develop collaborations with otehr institutions for the purpose of technical cultural exchange. Develop an education and public outreach component to the SRP-5 program that is structured to stimulate interest in aerospace science, engineering, and technology. Document all SRP designs and procedures for future generations of students who participate in the program.