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

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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

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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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4

Systems Overview



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5

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


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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


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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


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Concept of Operations and Sequence

of Events



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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.


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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


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14

Flight Data Analysis



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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.)


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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


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19

Payload Pressure Sensor Data Plot


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20

Payload Altitude Plot


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21

Payload Temperature Sensor Plot


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22

GPS Data Plot


We found

heatshield

We found

probe

3D GPS Plot


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23

Payload Battery Power Plot


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24

Tilt Sensor Plot


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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.


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Camera Video


Our camera was working but during operation, it did

not worked. Here is a screen shot a video that captured on

our tests.


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27

Failure Analysis

Alp Demirel


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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.


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29

Lessons Learned


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.


• 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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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!

CanSat 2018 PFR: #4128 Team CervosPresenter: Alp Demirel

cansat 2018 post flight review (pfr)...

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