TITech(LSS)CubeSat 'CUTE I"...

The obejectives are design/development of pico satellite equipped with bus components under the leadership of we students, and reduce the total costs by using commercial off-the-shelf components.

  • Experience the design/development/operation processes of small satellite system.

  • Aquire the fundamental development technology and operation methodology of small satellite system.

  • By using some COTS(Commercial off-the-shelf) components not yet used in space, we reduce the total costs. Therefore we make the database of COTS components on the space-use.

  • This time is the first launching oppotunity for we students. Therefore, it make our motivation raise!

Our Titech CubeSat project is coded "CUTE" (CUbical Titech Engineering satellite) project. "CUTE" also means our CubeSat is cute! This year, we are developing the first CubeSat: CUTE I.
  The number


  Launch sequence


  Success level

  Development models and schedule


One CubeSat for the first launch in May 2002

We scedule to participate to launches subsequent to 2002



Size : 10 cm×10 cm×10 cm,Weight : 1 kg

Deployable solar battery paddle and three mono-pole antennas

Communication frequencies
  Uplink : 144MHz(2m) Band    Downlink : 430MHz(70cm) Band
  Amateur Frequency Use




Sun-synchronous polar orbit, Height 650km

The MPA(Multi-Payload Adaptor) is capable of deployong 6 P-PODs, and CubeSat is ejected from the P-POD.

18 CubeSats in all are scheduled to be launched at the same time.



[Communication Mission]

  • CW-transmitter of CubeSat transmits CW-telemetry, and we receive the signal at ground station.

  • FM-transmitter of CubeSat transmits FM-telemetry by two different protocol (Ax.25 and TITech original(Simple Radio Link Layer protocol, SRLL)), and we receive the signal at ground station.

  • Change the communication protocol by command uplink.

  • Broadcasting service of CW-telemetry data and FM-telemetry data on WWW.

[Sensing Mission]

  • Measure the accelerarion, angular velocity and temperature of CubeSat on orbit, and then store and transmit the data.

[Deployment Mechanism Mission]

  • Deploy the solar battery paddle by command uplink.



[MINIMUM Success]

  • Experience the design/development process of on-orbit satellite system, and aquire the operation technology.

  • After the launch, track our CubeSat, and receive the CW-telemetry data.
    (Tracking, Communication (CW, Data Downlink))

[MIDDLE Success]

  • Receive FM-telemetry data, and monitor the condition of CubeSat by house-keeping data.
    (Communication (FM, Data Downlink))

[ADVANCED Success]

  • Deploy the solar battery paddle by command uplink.
    (Communication (DTMF, Command Uplink), Deployment Mechanism)

  • Change the communication protocols of FM-Telemetry by command uplink, and then test data communication more certainly.
    (Communication (DTMF, Command Uplink)



LSS schedule to develop the followings models. We are now developing Engineering model.

  • BBM(Bread Board Model): This model is conducted to all kinds of functional tests. Development will finish by CDR.

  • Balloon Experiment Model: This models are conducted to ISAS baloon experiment(Communication test, May, 2001)

  • EM(Engineering model): This models are conducted to functional test, vibration test and thermal vacuum test

  • MM(Mass Model):Mass model is equal to FM in terms of mass characteristics.

  • FM1,2(Flight Model):Flight model(FM1) and its backup model(FM2)

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Tokyo Institute of Technology    Space Robotics and Teleoperations Laboratory (SRTL)
Contact : Kazuya KONOUE