CanSat -> FloatSat. Welcome. To the satellite builders group. Informationstechnik für Luft- und Raumfahrt Aerospace Information Technology

Transcription

1 CanSat -> FloatSat Welcome To the satellite builders group

2 Prof. Dr. Sergio Montenegro Atheel Redah Nils Gageik Michael Ruffer Erik Dilger Frank Flederer House 52 Hubland-Nord Tel: 0931/

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5 What we do here I explain you in 10 Minutes how do build satellites and you build one for me!

6 Lectures 4x: FloatSat CanSat FloatSat CanSat

7 How does a satellite looks like?

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11 The end of every satellite? Good end:

12 The end of every satellite? Bad End:

13 But... Back to you and us

14 Who are we?

15 Julius-Maximillians- UNIVERSITÄT WÜRZBURG Informatik VIII Informationstechnologie für Luft und Raumfahr (Aerospace Infromation Technology) Büros (Offices) Haus 52 LuRi Labs Joseph-Martin-Weg 52/2 OrbitSim & CanSat Labs Haus 70 FlyCage Haus 60 Lectures (NOW)

16 Please Register in Wuecampus2! First in

17 We Build a satellite... I But...

18 We Build a satellite... I When I say we I mean YOU It is a project... It is your project Begin working NOW

19 What for do we need satellites? Please say... player-01a-

20 What for do we need satellites? Internet / Telefon Communication Television Kommunikation GPS & Navigation Earth science Optic Red.. green, blue (RGB) Infrared, UV Multispectral Radar Lidar Space Exploration Telescopes... player-01b- Weapos!

21 What does the satlite needs to do that What Kamera Antena Transmiter Reciever... Sensors? Actuators? What for

22 Which backgrounds do we need? What is yours? Mechanics, Electronics, Informatics, Aerospace Technologies, Thermodynamic, Chemistry, Energy, Physics, Mathematics,.. + Finances + 1x Manager

23 Interdiciplinary Team aeropsace physics structure power electronic software & control communication manager we need all! one missing -> will not fly every one is the most important... me too

24 Groups Groups with 6 persons: One mission Groups with 7 persons: Two missions Please wait to define your mission. **Every group is optimized to 6 persons as flows: 2x programmers 1x basic functions of the embedded system 1x ground station. 2x mechanicals> design and manufacture. 1x electronics and control. 1x programmer for project mission Radar : Good electrical eng. ultra sonic Lidar/IR-sensor: Good electrical eng. Cameras: Good SW Developer other sensors?... Good Ideas Make Star catalogue

25 Examples Video & Modell go.uni-wuerzburg.de/floatsat

26 The name of the game You have a company (invent a name) and I am the customer I order and satellite and pay with points You have to work very hard and deliver on time what I need (an not what I say!) Customers some times change their mind Customers some times express ambiguously But Customers are nice guys... (you need them) They may accept suggestions and modifications Customer: The one who pay The Main/Principal/Scientific investigator Me One idea from your group

27 First step: Find the Requirements (what to do) Requirements Where to find them? They are in the mind of the customer Wrong Before the system exists, NO ONE knows The requirements. First they have to be invented!

28 Second: Keep in eye your resources You Others In < 4 Months (>= 4 Years) With no money (>> 20 Million 500 M ) 6 Experts (100 Experts, each >> 10 years experience (1K MY experience) Not all needed Backgrounds are here No experienced Manager! (or do we have?) + Payload + Ground Stations + Scientific data Processing Do we have a chance?

29 Second: Keep in eye your resources You Others In < 4 Months (>= 4 Years) With no money (>> 20 Million 500 M ) 6 Experts (100 Experts, each >> 10 years experience (1K MY experience) Not all needed Professions No experienced Manager! (or do we have?) + Payload + Ground Stations + Scientific data Processing Do we have a chance? I hope so!

30 Your job begins now! Pleas write down! you will need it! identify what you can do and what NOT! Do not worry. You may say what you can do and what you can not do.

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32 2015: Up to now 10K Satellites placed ca Working 170 M Objects in Orbit 30K > 10^3 cm^3

33 Films

34 What do we need in a Satellite? First Question: What for?

35 Bus - Payload BUS = Chassis

36 Bus - Payload BUS = Chassis Different Payload on the same chassis

37 Satellites: Payload & Bus Payload (== Cargo) Different Missions Different applications Telescopes, Radar, Lidar, Debris detect,... Bus: Basis Services Communikation Telemetrie Commanding Energie Attitude Guidance, Propulsion Navigation Surveillance

38 Space Segment (Bus + Payload) Ground Segment (Ground Station + Control Cent.)

39 Interfaces: Satellit & Groundstation Telemetry Real Time History Payload Data Functional, Operational, Technological standard / extended Telecommands Inmediat Timed Commands Protocolle: 1. Radio Waves 2. CCSDS N:M N:M

40 Satellites

41 TerraSAR-X TECSAR BIRD TET Gewicht & Preis & Entwicklungszeit TUBSAT-N BeeSat UWE Picosatellit ca. 1 kg 500K Nanosatellit Mikrosatellit Minisatellit 1-20 kg kg kg <5M < 50 M < 100M Typical Sats > 500 kg Much more

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43 Satellites: Payload & Bus Payload (== Cargo) Different Missions Different applications Telescopes, Radar, Lidar, Debris detect,... Payload/Bus Launcher Aeroplanes Satelliten Autos 100:1 (Kg) 10:1 2:1.. 1:1.. 1:2 2:1 Bus: Basis Services Communikation Telemetrie Commanding Energie Attitude Guidance, Propulsion Navigation Surveillance

44 Satelliten: Payload & Buss Bus: Basic support Payload: Mission Payload Bus Interfaces Mechanical Thermal Electrical, Power Data From Bus Payload Energie Thermal Control Commandos Attitude and Navigation Data From Payload Bus State Payload Data Scientific information to be downloaded

45 Functions in Satellites Payload Payload Computer Memory Sensors Payload Data Processing Memory Telemetry To the Erde Commands. From the earth Control (Bus) Sensors Controll Actuators Boardcomputer Physical systems of the spacecraft External Environment

46 Inside of a Satellite Antriebe

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49 Your Sat: ---- Space Segement 1. get & execute commands 2. Rotate & Stabilize 3. Find the sun 4. Deploy solar panel 5. execute a mission Different for each group 1D Attitude Control ---- Ground Segment 1. Send Commandos 2. Display telemetry 3. Display scientific data Different for each group

50 What we need Information we nedd (sensors) Rotation velosity: Gyros Rotational Position (Attitude): Start Sensor Termometer Battery voltage receiver Payload: Camera What we control (Actuators) Control rotation Motor: Wheel Transmiter Deployment of Solar panels Infrastructure Power Onboard computer Mechanical structure software

51 Software in Satellites Software: Commanding Timmed Commands Telemetry Mass Memory Management surveillance, Power control, Thermal control Payload interface, Housekeeping, Redundancy-Mng, Time mng, Attitude control, Navigation, Guidance, Application mng, Relay control,... Autonomy

52 Software Network

53 Space Segment (Bus + Payload) Ground Segment (Ground Station + Control Cent.)

54 Groundstations

55 Control Centre

56 Control Centre Console

57 Control Centre Console Compare... What is better?

58 Goundcontrol Software Kontrollraum

59 Space Segment

60 Software Ac Floating Mechanism rs o t tua Hardware Se ns or en Structure and mechanisms Microcontroller

61 State of the art GPS Computer Wheels Computer etc... Computer Bordcomputer I2C oder SPI Accelerometer Gyros EarthSensor Computer StarSensor Computer

62 State of the art GPS Computer Wheels Computer etc... Computer I2C oder SPI Accelerometer Gyros Bordcomputer Bordcomputer Bordcomputer EarthSensor Computer StarSensor Computer payload-3 payload-1 Payload Comp. payload-4 payload-2

63 Avioniks & Devices Zentralavioniks Antriebe

64 Any Questions about what to do? I am the Custumer and I order here. money: Mission: waht to do? 0M 1. Deployment (solar panels) Picture of... Folow Laserpointer... find xx... Communication to ground: Radio link real itme Lifetime: at lease 5 minutes for the presentation Devices Available? Laboratories House 70 Deliverals: Groups: Pysical Dim Test: Nov: Preliminary Design 1st week feb: running System. 6 Persons per groups 20 cm diameter < 5 kg. Send comands, get picture.

65 Bus It shall be able to keep an stable attitude: 1D It shall be able to change its attitude It shall be able to keep a constant attitude speed It shall find the sun and open the solar panel It shall send per telemetry Attitude data Power state Temperatures Payload data: Pictures It shall be controllable per telecomands Target attitude Take picture Down load pictures It shall survive autonomously

66 Payload Scientific mission (Payload) Camera Take and send Pictures Find laser pointer (angle from North) (optional) Sensors Environment surveillance Light, temperatures

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68 Sensors (1/2) Do we need? What for? (Payload Sesnsorik) Radio Communications Starsensors Startracker Sun sensor Horizon Sensor

69 Sensors (2/2) Do we need? Waht for? Magnetometer Gyroskope Acceleromenter GPS Analog Sensors Temperature Current Voltages Battery Load Forces Ligth What else?

70 Actuators (1/2) Do we need? What for? Downlink for Housekeeping (Trasnmiter) Extra Download for Playload Data Motors Servomotor for Camera Solar panels Antennas Relays Devecies on /off Whole Satelite Sweitch What else?

71 Actuators (2/2) Do we need? What for? Magnet Torquer Reaction Wheels Propulsion Pyros Separation Deployment Solar panals Cameras Booms Heating Cooling

72 Data Management (Software) Do we need? Waht for? Real time operating system IO Drivers Commanding Timmed Commands Telemetry Mass Memory Management surveillance, Power control, Thermal control Payload interface, Housekeeping, Redundancy-Mng, Time mng, Attitude control, Navigation, Guidance, Application mng, Relay control,... Autonomy Payload Data Processing

73 Data Management (Hardware) ARM -CPU Speed: Memory Size: Flash Mem Size: External Flash Card: Number or IO Interfaces: 160 Mhz 256K 1M bytes NO... 4 Gbytes (do wou need?) Many

74 Qualification Tests Functionality Vacuum Thermal ( ) Radiation ( KRad MeV Ions) Do we need?

75 Groundsegment Telecommand Tool Telemetry Tool Payload Data Visualisation

76 Environment & Ground Segment How to rotate & Test? Illumination? Attitude determination? Data Links... Commands Telemetry

77 What do we need for EGSE (Electronic Ground Segment Equipment) Donwlink Uplink Textual Data Output Graphical Data Output Image Foto: Command Generator Command time lists management Payload Data Management Data Archive Replay from Archive

78 What do we need for GSE (Ground Segment Equipment) Air Suspension Sun Stars Gound maps Watter, Bucket Energie (Battery loader)

79 Groups... Please find a name fro your group Each group shall have Programmers Application programmers HW-Interface programmers Gpraphical EGSE? Electronic designers Digital Technic Power Radio Coms Control Engineers (Steering) Mechanical designers Structure Thermal? Management! Who is an expert in each of this fields? Else (If you feel you can not contribute directely to these fiedls) You Learn (with us) LabVew Then Program EGSE User Interface Satellite Modell

80 Groups... Please find a name fro your group Each group shall have Programmers Application programmers HW-Interface programmers Gpraphical EGSE? Electronic designers Digital Technic Power Radio Coms Control Engineers (Steering) Mechanical designers Structure Thermal? Management! Group Moderation Representant for Today only! Group Representant for 4 Weeks Who is an expert in each of this fields? Else (If you feel you can not contribute directely to these fiedls) You Learn (with us) LabVew Then Program EGSE User Interface Satellite Modell

81 Work Packages First: be clear what to to: Requirements (Write down and fix!)

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83 Launch: The count down runs! Countdown T - (3 Months + 20 Days)

84 Now who does what Please check in your group now!

85 Which experts do we need? Computer Scientists (Software) Electronic Engineers (Hardware & Power) Control Engineers (Steering) Mechanical Engineers Space Technology Engineers Radio Coms Scientific coordinator (Payload) Managers (Documentation Management) Manager is not the boss! he/she only coordinates & is our contact person. Manager only for 4 weeks Technical decisions shall be taken by technical experts

86 Grades... Methods which did not work Same grade for all in the group Each Group gets from me from 0 to 600 Points (For 6 Persons) You distribute the points inside of your group: You shall know who made a good job and who did not work! You shall take care every one in your group is working hard. A Grade for the group, each member gets this grade +/- N points

87 Grades Each developer shall get from 0 to 100 points (Grade = f(points)) 100 : the Best < 50: Fail! Individual Work in team Final oral presentation 80% 20%

88 Grades... our next attempt At the end every one has to present what he/she did We evaluate the presentation We see how his/her development works We give grades individually

89 Wiki Support from us Product documentation, data Sheets Specifications Messages Room haus-70, all time open for you Each group gets 2 Priority slots, each 3 hours Support Ask any time Atheel, Nils, Michael, Erik, Frank But... Before you ask, analyse the error yourself Hardware Camera, Sensors IMUS (Accelerometer, Gyro, Magnetometer) DC-Motor & Power Bridge (H-Bridge) AVR (no OS) Cortex (RODOS, for c++) Zigbee / Bluetooth / WI802 MhZ Modulator Batteries Mechanical Sphere Motors

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91 Things you shall know about Teamwork

92 Each expert area a different view

93 We have to understand each other

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95 If you want to talk to computer scientists Bug Item Paradigm System Heuristics Metapher Daten 90% complete With 50% provability: Yes! Thing Example some thing for which he has no name Try Analogy Any thing I a Computer we are missing only the other 90% I do not know (50-50 yes, no)

96 If you want to talk to computer scientists Bug Item Paradigm System Heuristics Metapher Data 90% complete With 50% provability: Yes! I made a Mistake! Thing Example some thing for which he has no name Try Analogy Any thing in a Computer we are missing only the other 90% I do not know (50-50 yes, no)

97 How many expertd do we need for a satellite? About 100! And all have to Understand each other, To work In harmony To help each other To accept compromises

98 + Quality assurance You!

99 + Manager Left Hand Ri gh a th nd For 4 Weeks!

100 Documentation In Space business: Quality == amount of documentation! Examples Columbus-Segment: weight of printed documentation = 3x weight of module Boardcomputer (150g): Documentation about 3 Kg Software: One page per line of code (req, spec, test spec, test-report, Tracebility,...) in Space we earth money with paper and not with hardware/software!! (SORRY!) More documentation higher quality? Quiality (my def) = Dependability Amount of documentation (time and man power unchagned)

101 First Steps

102 First Step Requirements: What for?

103 Requirements management

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105 1. Moving Target 2. Changing Requirements 3. > 20 Engineers working together / simultaneously > 20 Interpretations of the same thing

106 Lim Delta ->0 Tolerable

107 You have to deliver tested products!

108 Documents Req, Design, Test-Spec Project Plan & Costs Launchers Product assurance (and model philosophy) Requirements network Assembly and integration Budgets Interfaces Mission analys (Orbit, Ligth, Comms, Radiation) Communications Software Hardware Attitude Control Navigation Power Structure and accommodation Thermal EGSE / MGSE Payload Shall We?