cansat 2018 post flight review (pfr)...
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CanSat 2018 PFR: #4128 Team Cervos 1
CanSat 2018
Post Flight Review (PFR)
Outline
#4128
Team Cervos
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2
Presentation Outline
Presenter: Name goes here
Page No. Contents Presenter
5-16 Introduction Mustafa Anıl Yiğit
17-28 System Overview Mustafa Anıl Yiğit
29-39 Concept of Operations and Sequence of Events Mustafa Anıl Yiğit
40-53 Flight Data Analysis Mustafa Anıl Yiğit
54-67 Failure Analysis Alp Demirel
68-74 Lessons Learned Alp Demirel
CanSat 2018 PFR: #4128 Team Cervos
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Team Organization
Mission ControlOfficer
Burhan Kaplan
CanSat Crew
BerkayKüçükkılavuz
Kadir Serhat Altıntığ
Ground StationCrew
Alp Demirel
Ramazan Kurban
Recovery Crew
Mustafa Anıl Yiğit
Miray Özbay
Mustafa Eryılmaz
Melisa İrem Uzun
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Systems Overview
Mustafa Anıl Yiğit
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Cansat Design Overview
Presenter: Mustafa Anıl Yiğit
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.
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Cost of Cansat
ELECTRONICS HARDWARE
COMPONENT MODEL QUANTITY COST TOTAL COST DETERMINATION
Micro ControllerArduino Nano
ATmega3281 $9.19 $9.19 Actual
Nichrome Wires Nichrome 80 - 0.2mm 1 m $0.5 $0.5 Actual
Photoresistor Generic Type 1 $1 $1 Actual
Real Time Clock Maxim DS3231 1 $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-6050 1 $4.52 $4.52 Actual
Camera Tiny Camera 1 $6.99 $6.99 Actual
Voltage Sensor Own Production 1 - - -
Temperature Sensor LM35 1 $1 $1 Actual
Micro SD CardSandisk SDSQUAR-
016G-GN6MA1 $8.49 $8.49 Actual
Bonus Transmitter Antenna LLC 2042870100 1 $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 MP1584 1 $3 $3 Actual
Bonus Mission Transmitter CC1000 1 $16.52 $16.52 Estimated
Battery MN1604 1 $10 $10 Actual
SUBTOTAL $129.4
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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Cost of Cansat (Cont.)
Mechanical Subsystem
MODEL QUANTITY COST TOTAL COST DETERMINATION
PLA 250g 20$/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 $8 Actual
Parachute Fabric 1𝑚2 4$/𝑚2 $4 Actual
Nylon Fabric 1𝑚2 2$/𝑚2 $2 Actual
Glue 1pcs 2$/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
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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Parachute
deployment
mechanism
Heat sensor
Electronics
Egg
protection
shell
Heat shield
attachment
part
Flaps
Carbon fiber
rods
Camera
Power
switch
Elastic fabricRepresents
parachute
Battery
Air pressure sensor
RTC moduleTilt sensor
XBee
Regulators
GPS
Microcontroller
8CanSat 2018 PFR: #4128 Team CERVOS
Physical Layout
Presenter: Mustafa Anıl Yiğit
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60
mm
12
0m
m
9
Physical Layout (cont.)
Top View
Side View
30
5m
m
120mm
11
0m
m1
35
mm
Launch Deployed - 2Deployed - 1
65mm50m
m170mm
60mm
10m
m
CanSat 2018 PFR: #4128 Team CERVOSPresenter: Mustafa Anıl Yiğit
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10CanSat 2018 PFR: #4128 Team CERVOS
Physical Layout
Presenter: Mustafa Anıl Yiğit
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Concept of Operations and Sequence
of Events
CanSat 2018 PFR: #4128 Team Cervos
Mustafa Anıl Yiğit
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Comparison of Planned and Actual
Con-Ops
Planned 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.
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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13
Comparison of Planned and Actual
Sequence of Events
Planned Actual
Arrival at launch site Arrived at 9 am
GCS and antenna preperation Postponed to 1.40 pm
CanSat assembly & testing Performed on time
CanSat turn in Performed on time at 2.00 pm
Collecting CanSat, powering up and loading to a
rocket
Performed on time at 2.20 pm
Data link connection verification Performed after GCS preperation
Taking the rocket and ground station to launchpad Performed at around 2.20 pm
Displaying ground station operation to the judge Performed prior to launch
Executing launch procedures Performed at 2.46 pm
Monitoring and performing flight operations Performed after launch
Recovering Heatshield and Probe Performed after landing
Delivery of telemetry data file to field judge for review Performed
Clearing out of the area Performed
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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14
Flight Data Analysis
Mustafa Anıl Yiğit
CanSat 2018 PFR: #4128 Team Cervos
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(If You Want) Flight Data Analysis Overview
15CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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(If You Want) Flight Data Analysis Overview(Cont.)
16CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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17CanSat 2018 PFR: #4128 Team Cervos
Flight Data Analysis Overview(Cont.)
Presenter: Mustafa Anıl Yiğit
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18
Heatshield Separation Altitude
SituationDescent
Rate
(m/s)
Heat shield + Probe post
rocket-separation 38.3
Probe after heat shield
deployed24.71
Heat shield after being
released9.06
Probe following separation
from the Heat shield4.99
Between 345-321m 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
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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19
Payload Pressure Sensor Data Plot
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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20
Payload Altitude Plot
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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21
Payload Temperature Sensor Plot
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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22
GPS Data Plot
CanSat 2018 PFR: #4128 Team Cervos
We found
heatshield
We found
probe
3D GPS Plot
Presenter: Mustafa Anıl Yiğit
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23
Payload Battery Power Plot
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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24
Tilt Sensor Plot
CanSat 2018 PFR: #4128 Team CervosPresenter: Mustafa Anıl Yiğit
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25
Wind Sensor Data
CanSat 2018 PFR: #4128 Team Cervos
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.
Presenter: Mustafa Anıl Yiğit
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Camera Video
CanSat 2018 PFR: #4128 Team Cervos
Our camera was working but during operation, it did
not worked. Here is a screen shot a video that captured on
our tests.
Presenter: Mustafa Anıl Yiğit
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27
Failure Analysis
Alp Demirel
CanSat 2018 PFR: #4128 Team Cervos
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Identification of Failures, Root
Causes and Corrective Actions
Presenter: Alp Demirel
• 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 1247. So that at least 230 data
packages did not received.
• Root Cause : Landing behind the woodland.
CanSat 2018 PFR: #4128 Team Cervos
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Lessons Learned
CanSat 2018 PFR: #4128 Team Cervos
Alp Demirel
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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.
CanSat 2018 PFR: #4128 Team Cervos
• Egg protection mechanism worked
pretty as well. It is proved because
there was no damage on egg.
Judge
Probe
Presenter: Alp Demirel
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What Worked (Cont.)
Presenter: Name goes here CanSat 2018 PFR: #4128 Team Cervos
• 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.
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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.
CanSat 2018 PFR: #4128 Team CervosPresenter: Alp Demirel
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