CanSat 2018 Post Flight Review (PFR) Outline

Transcription

1 CanSat 2018 Post Flight Review (PFR) Outline #4128 Team Cervos 1

2 Presentation Outline Page No. Contents Presenter 5-16 Introduction Mustafa Anıl Yiğit System Overview Mustafa Anıl Yiğit Concept of Operations and Sequence of Events Mustafa Anıl Yiğit Flight Data Analysis Mustafa Anıl Yiğit Failure Analysis Alp Demirel Lessons Learned Alp Demirel Presenter: Name goes here 2

3 Team Organization Mission ControlOfficer Burhan Kaplan CanSat Crew Ground Station Crew Recovery Crew Berkay Küçükkılavuz Alp Demirel Mustafa Anıl Yiğit Kadir Serhat Altıntığ Ramazan Kurban Miray Özbay Mustafa Eryılmaz Melisa İrem Uzun 3

4 Systems Overview Mustafa Anıl Yiğit 4

5 Cansat Design Overview Probe Frame Includes PLA components, carbon fiber rods, plastic coatings. This configuration makes the probe lightweight and durable. Parachute System Includes parachute, elastic fabric, servo, and deployment system. Electronics Electronics will be mounted using stand-off. Battery will secured by 3D Printed PLA case. Egg Protection System Includes egg shells, sponges, carbon rods and springs. Heat Shield System Includes 8 opening carbon rods, servo mechanism. Orange colored PLA is used. Strings are part of mechanism. Nylon fabric is used to ensure not any openings. 5

6 Cost of Cansat ELECTRONICS HARDWARE COMPONENT MODEL QUANTITY COST TOTAL COST DETERMINATION Micro Controller Arduino Nano ATmega328 1 $9.19 $9.19 Actual Nichrome Wires Nichrome mm 1 m $0.5 $0.5 Actual Photoresistor Generic Type 1 $1 $1 Actual Real Time Clock Maxim DS $25 $25 Estimated Air Pressure Sensor BMP280 1 $9.95 $9.95 Actual GPS GY-NEO6MV2 1 $11.90 $11.90 Actual Tilt Sensor MPU $4.52 $4.52 Actual Camera Tiny Camera 1 $6.99 $6.99 Actual Voltage Sensor Own Production Temperature Sensor LM35 1 $1 $1 Actual Micro SD Card Sandisk SDSQUAR- 016G-GN6MA 1 $8.49 $8.49 Actual Bonus Transmitter Antenna LLC $5.82 $5.82 Actual Probe Antenna Taoglas FXP70 1 $3.52 $3.52 Actual RF Module XBee Pro S2C 2.4 GHz 1 $12 $12 Estimated Regulator MP $3 $3 Actual Bonus Mission Transmitter CC $16.52 $16.52 Estimated Battery MN $10 $10 Actual SUBTOTAL $

7 Cost of Cansat (Cont.) Mechanical Subsystem MODEL QUANTITY COST TOTAL COST DETERMINATION PLA 250g 20$/kg $5 Estimation Carbon Rods 65cm 6$/m $3.9 Actual Rope 1m 0.10$/m $0.1 Actual Springs 15pcs 0.10$/pcs $1.5 Actual Sponges 1pcs 1$/pcs $1 Actual Servo 2pcs 4$/pcs $8 Actual Parachute Fabric 1m 2 4$/m 2 $4 Actual Nylon Fabric 1m 2 2$/m 2 $2 Actual Glue 1pcs 2$/pcs $2 Estimated Hinge 4pcs 0.35$/pcs $1.4 Actual Nichrome Wire 0.5m 1$/m $0.5 Actual Tyre 0.2m 0.5$/m $0.1 Actual Plastic Coating 1pcs 8$/pcs $8 Actual Electronic Total Cost Mechanical Total Cost Total Cost(with 10% margin) $129.4 $37,5 $183,59 7

8 Physical Layout Elastic fabric Electronics Flaps Power switch Carbon fiber rods Camera Represents parachute Parachute deployment mechanism Heat sensor Egg protection shell Battery Heat shield attachment part Air pressure sensor RTC module Tilt sensor XBee Microcontroller Regulators GPS CanSat 2018 PFR: #4128 Team CERVOS 8

9 305mm Team Logo Physical Layout (cont.) 120mm Launch Deployed - 1 Deployed mm Top View 60mm Side View 110mm 135mm 50mm 10mm 65mm 60mm 170mm CanSat 2018 PFR: #4128 Team CERVOS 9

10 Physical Layout CanSat 2018 PFR: #4128 Team CERVOS 10

11 Concept of Operations and Sequence of Events Mustafa Anıl Yiğit 11

12 Planned Comparison of Planned and Actual Con-Ops Actual 1. Cansat preparation and power up prior to launch. Done, no problem occurred. 2. Data link verification on GCS Done, no problem occurred. 3. Launch. Done, no problem occurred. 4. CanSat seperation from rocket. Done, no problem occurred. 5. Flaps and heatshield opening. Done, no problem occurred. 6. CanSat descent with flaps and heatshild. Done, no problem occurred. 7.Camera system start to record video. Done, no problem occurred. 8. Heatshield release from CanSat at 300m and Parachute opening. Done, no problem occurred. 9. Probe descent with parachute. Done, no problem occurred 10. Landing occurs Done, no problem occurred. 11. Communication stop Partially complited 12. Video recording stop Fail, not complited 13. Activation of audio beacon Done, no problem occurred. 12

13 Planned Comparison of Planned and Actual Sequence of Events Actual Arrival at launch site GCS and antenna preperation CanSat assembly & testing CanSat turn in Collecting CanSat, powering up and loading to a rocket Data link connection verification Taking the rocket and ground station to launchpad Displaying ground station operation to the judge Executing launch procedures Monitoring and performing flight operations Recovering Heatshield and Probe Delivery of telemetry data file to field judge for review Clearing out of the area Arrived at 9 am Postponed to 1.40 pm Performed on time Performed on time at 2.00 pm Performed on time at 2.20 pm Performed after GCS preperation Performed at around 2.20 pm Performed prior to launch Performed at 2.46 pm Performed after launch Performed after landing Performed Performed 13

14 Flight Data Analysis Mustafa Anıl Yiğit 14

15 Flight Data Analysis Overview 15

16 Flight Data Analysis Overview(Cont.) 16

17 Flight Data Analysis Overview(Cont.) 17

18 Heatshield Separation Altitude Situation Descent Rate (m/s) Heat shield + Probe post rocket-separation Probe after heat shield deployed Heat shield after being released Probe following separation from the Heat shield Between m descent rate is 24m/s, It is almost identical with calculated value, which is probe s descent rate when heat shield released. Heat shield release and parachute deploy is simultaneous done in our system we can check that by after heat shield release descent rate of probe decreases to 5m/s 18

19 Payload Pressure Sensor Data Plot 19

20 Payload Altitude Plot 20

21 Payload Temperature Sensor Plot 21

22 GPS Data Plot We found probe We found heatshield 3D GPS Plot 22

23 Payload Battery Power Plot 23

24 Tilt Sensor Plot 24

25 Wind Sensor Data We prepared our RF circuit (both receiver and transmitter) and wind sensor, but unfortunalety our RF circuit malfunctioned. For wind sensor we have case on Cansat. 25

26 Camera Video Our camera was working but during operation, it did not worked. is a screen shot a video that captured on our tests. 26

27 Failure Analysis Alp Demirel 27

28 Identification of Failures, Root Causes and Corrective Actions Failure : Camera did not worked. Root Cause : Camera is not stable. It was worked on our tests. Corrective Action : More tests should be done. Failure : We got 1017 data packages but last package count that we know is So that at least 230 data packages did not received. Root Cause : Landing behind the woodland. Presenter: Alp Demirel 28

29 Lessons Learned Alp Demirel 29

30 What Worked Heat shield is worked well. It deployed and released without any problem. Also, we have made our heat shield very light weight by using only one servo on it. It is fell to the ground but it didn t crashed. To avoid tumbling, we have added flaps, they worked and our probe was incredibly stable, we can prove that by just looking tilt data, on X and Y directions angle change is only ±20 degrees during descend. Seperation from the rocket causes higher angle changes. Egg protection mechanism worked pretty as well. It is proved because there was no damage on egg. Probe Judge Presenter: Alp Demirel 30

31 What Worked (Cont.) Parachute deployment system is worked too. After parachute deployed, probe s speed was exactly what we calculated. Data correction system worked well. We detected 62 error. 54 of them is FRAME error and 8 of them is CRC error. So we didn t include these incorrect values to our graphs. Audio beacon system is worked well and helped us to find the probe which means all states are worked because buzzer shows that it is on landing state. GPS worked well and thanks to GPS, we could find the Cansat. Presenter: Name goes here 31

32 What Didn t Communication ended at 37 m instead of ground because lots of trees get in between GCS antenna and probe. Highest gain antenna and high transmit power Xbees are already selected but nothing to do to avoid this problem. Camera did not worked. The problem was the camera. It is not stable. Presenter: Alp Demirel 32

33 Conclusions In general, We have completed every subsystem requirement. We did not accomplish bonus missions. We enjoyed a lot. If possible we are ready to second launch. Thanks to the everbody! Presenter: Alp Demirel 33