ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NV / The U.S. Army Research Laboratory developed an on-board telemetry instrumentation system to obtain measurements of the in-flight dynamics of medium caliber projectiles. The small size, high launch acceleration, and extremely high spin rates of these projectiles created many design challenges. Particularly challenging were the high spin rates, necessitating the development of a data compression scheme for solar sensors. Flight tests successfully captured data for spin rates exceeding 1000 Hertz (1 kHz).