B.E.E.P. Basic Earth Exploration Probe

Siberian State Aerospace University

Krasnoyarsk

Russia

International class

Team

Egor Krylov•Parachute design and manufacturing;•Structure design and manufacturing;•Main assembly;•Flight tests.

Nikita Boev•Actuators controllers design;•Camera interaction software;•RF design, high gain antenna manufactoring;•Ground control unit assembly;•Flight tests.

Oleg Skiba•Graphic user interface for ground control unit (GCU);•Mapping software assembly.

Ivan Makarov•Project manager•Central controller hardware and basic software design;

B.E.E.P. missions

• Primary: Temperature and pressure measurements;

• Specific: Photography and transmission them with realtime error correction;

• Comeback mission.

B.E.E.P. Design: payload and control

B.E.E.P. Design: actuation and power source

Central controller system

• MEMS IMU• Absolute barometer for altimeter• GPS receiver• High computational performance• 5 external serial ports, ethernet port

Features

Autopilot

Left actuator

Temp sensor

Radiomodem2.4GHz

Right actuator

Temp sensor

Sensors gathering, getting navigational

solutuin

Automatic control solution thread

Actuators control software, choose between automatic or manual control signals (for tests only)

Communication module

Gathering temperature and pressure data,

logging

Mission algorithm

0

100

200

300

400

500

600

0 10 20 30 40 50 60 70 80 90

Altitude (m)

Alt_bar (m)

Actions after release:• Waiting for parachute opening. When

barometric altitude is lower than it’s maximum for 10 meters;

• Starts telemetry recording and photography;• Starts data transmitting process; • Waits 2 seconds for flight stabilization;• Checks GPS signal reacquiring;• Stars return mission control;• Stops control, telemetry and photographs

recording after 10 seconds of constant barometric altitude.

• Keeps transmitting gained data till the last written file.

Ground control unit

Mass summary

System's component Price, Euro

Autopilot 400

Battery 30

Step motors + actuators 40

Datalink (including ground segment) 60

Parachute material 20

CANSAT frame's material and CNC mill services 50

Ground control unit 100

Summ 700