CUTE-I Telemetry Analysis

2005/07/12 Updated

Analyzed results of CUTE-I telemetry are reported here.

Motion Right After Separation   Long Term Temperature Change   Demonstration of communication protocol   Temperature Fluctuation along Orbit

# Motion Right After Separation -> 2003/08/08 Completed

At 300 seconds after the separation, three monopole antennas of CUTE-I were successfully deployed. The following graphs show angular velocity at near the deployment time. Precise antenna deployment time is 303s. The angular velocity starts to change at 303s. The antennas are coiled around b2-axis(in CUTE_Frame) of CUTE-I, so the antennas deployment influences the rotation around b2-axis. The following graph certainly indicates the effect of antenna deployment. Definition of CUTE-I's Coordinates Angular velocity at near 300sec after separation from gyro sensor Euler parameter at near 300sec after separation

# Long Term Temperature Change -> Now on mission

2003.7-2003.8     Temperature history(2003.7.1-2003.8.31)

2003.7-2004.5     Temperature history(2003.7-2004.5)

2004.5-2004.7     Temperature histroy(2003.7-2004.7)

2003.7-2005.7 (05/07/12 updated)     Temperature history(2003.7-2005.7)

# Demonstration of communication protocol-> Now on mission

Ratio of successfully received packets

# Temperature Fluctuation along Orbit-> Completed

Definition of wall’s number Temperature Fluctuation in Orbit (Aug 20)

# Sun Sensor Test-> Completed

# Motor Test-> Completed

# Check of Onboard Memory(SRAM) -> Completed

under construction