Post Flight Review (PFR) CanSat · PDF fileCanSat 2017 PFR: Team #6621 Cuauhtémoc IPN 1 CanSat 2017 Post Flight Review (PFR) Version 1 #6621 IPN Cuauhtémoc

CanSat 2017 PFR: Team #6621 Cuauhtémoc IPN 1

CanSat 2017 Post Flight Review (PFR)

Version 1

#6621IPN Cuauhtémoc


Presentation Outline

– Systems Overview - Sebastián López

– Concept of Operations (CON-OPS) and Sequence of Events -

– Flight Data Analysis -

– Failure Analysis -

– Lessons Learned -

Presenter: Sebastián López

CanSat 2017 CDR: Team #6621 Cuauhtémoc IPN 3

Team Organization

Team Lead:Sebastián López

Sophomore

Faculty Advisor:MSc Héctor Díaz

Cansat Mentor:Alessandro Geist

Irving LópezSenior

Mechanical Team:

Osvaldo BenítezJunior

Javier SánchezJunior

Martín MarcelinoSophomore

Gabriel CarrasqueroSophomore

Alejandro MuñozFreshman

Electrical Team:

Tomás GuerreroFreshman

Ángel QuintanaSophomore

Moisés RamírezSophomore



Systems Overview

Sebastián López


CanSat Overview - PBS


Cansat System

Ground Station Glider Container

● RPSMA Antenna● Xbee Pro S2C● Xbee Digi Module● Computer● Battery● Java GUI● CSV File

Mechanical:● Thermoformed Styrene Fuselage● 3/36’’ Balsa Wood Wings● Styrene empennage● ABS Wing Deployment Mechanism● Epoxy, Cyanocrylate and Duct tape

reinforcement.

Mechanical:● Fiberglass Structure● ABS Servo Mechanism● Nylon parachute● Steel Hinge● Epoxy, insulating tape,

cyanocrylate as reinforcement.

Electrical:● Arduino Nano● Bosch BMP 180● XBEE Pro S2C● RTC● 9V Battery● PCBs● Audio Beacon

Sensors:● HMC5803● BMP 180● BMP 280

C&DH:● Arduino Nano● Xbee S2C● RTC

Power System:● Solar Panels● PCBs &Power Management Circuit● Audio Beacon

CanSat 2017 PFR: Team #6621 Cuauhtémoc IPN

CanSat Overall Cost

6

Concept Cost

Fuselage $ 1.00

Solar cells $ 95.00

Glass Fiber $ 2.00

Hinges $ 1.00

Poliester Resin $ 2.00

ABS Mechanisms $ 14.00

Springs $ 2.00

Arduinos $ 75.04

XBEE Pro $ 37.05

XBEE $ 22.75

BMP 180 $ 12.94

BMP 280 $ 9.95


CanSat Overall Cost

7

PCBs $ 1.00

Power Management Circuit $ 5.00

Battery $ 2.50

HMC5803 $ 12.94

RTC $ 4.00

Parachute $ 3.00

Stickers $ 3.00

Supercapacitor $ 4.90

Servo Motor $ 4.00

Total $ 315.07


Physical Layout

8


Physical Layout

9


Concept of Operations and Sequence of Events

Sebastián López


Comparison of planned and actual Con-Ops

11

Pre Launch:• FRR • Cansat is turned on• Cansat is placed in the

rocket• Cansat is taken to Launch

Site• GCS is turned on

Launch:• Data collected is analyzed

to detect deployment• Near Apogee Deployment• SW state: Launch

Container Deployment:

• Container descent strategy active

• SW state: Deployed• Container continues to

send telemetry data.


Glider Deployment:• Release mechanism

activates in order to deploy at 400m

• The glider unfolds and starts stable flight

• The container continues to transmit telemetry for 2 seconds

Glider Flight:• Glider powers on from

solar energy and starts transmission and taking pictures

• Glider flies on a helical pattern with a radius of no more than 500 meters for about 2 minutes

Recovery• Glider and container stop

transmission and activate buzzer

• Team locates the CanSat with binoculars

• Images from the CanSat are retrieved

Comparison of planned and actual Con-Ops


Comparison of planned and actual Sequence of Events

13

Time Event Crews Involved

Pre-LaunchArrive at launch site ALL

Prepare CanSat for turn in. Make it flight ready and perform any tests. CanSat Crew GCS Crew MCO

Launch

Turn in CanSat at the check-in table by noon. It will be weighed and fit checked and stored in the off state until rocket preparation time.

CanSat Crew GCS Crew MCO

Upon the team round, the team will collect their CanSat and load it into a rocket. CanSat Crew

Ground system construction and communications verification. GCS Crew MCO

Take the rocket with the ground station to the assigned launch pad. A staff member will install the rocket on the launch pad.

CanSat Crew MCO

When it is time to launch, a judge will come by the ground station to monitor the ground station operation.

MCO

The team mission control officer will go to the launch control table and execute the launch procedures with the flight coordinator providing oversight.

MCO

Ground station crew will perform all required flight operations. GCS Crew

Post-Launch

After all CanSats have launched for the current half hour round, team recovery personnel can head out to recover.

Recovery Crew

Ground station crew must clear out of the ground station area to allow the next round ground stations to set up.

GCS Crew

Ground station crew must turn in the thumb drive with any ground station data and photos to the field judge.

GCS Crew

Recovery crew must return to the check-in for any final judging requirements. Recovery Crew


Flight Data Analysis

Sebastián López

14


Payload Separation Altitude

15

Apogee

Deployment


Glide Duration

16

No telemetry

data


Payload pressure sensor data plot

17

No telemetry

data


Payload altitude plot

18

No telemetry

data


Payload temperature sensor plot

19

No telemetry

data


Pitot Tube data plot

20

No telemetry

data


2 dimensional plot based on speed and heading

21

No telemetry

data


Payload solar power plot

22

No telemetry

data


Container pressure sensor plot

23


Container pressure sensor plot

24


Container altitude plot

25


Container temperature plot

26


Container battery voltage plot

27

*Complete mission


Container battery voltage plot

*Effective mission

28


Camera images

29

No telemetry

data


Failure Analysis

Sebastian Lopez

30


Identification of failures, root causes, and corrective actions

31

Failure

No telemetry was received from the glider.

Root Causes

Options:● Xbee connection to processor failed due to last minute repair.● Power failure in the glider.

Corrective actions

Options:● Have FSW ready and everything integrated from the night before, the Xbee connection would have

been safer with epoxy instead of a cyanoacrylate due to their hardness.● Have a replacement for major components on time.


Lessons Learned

Sebastian Lopez

32


What worked

- ABS Mechanical and thermal behaviour- Material resistance and dimensions- Glider deployment- Glider flight performance- Container data transmission- Container flight software- Ground Station plotting- Data collection- Container descent

33


What didn’t work

- Glider data packet transmission/detection

34


Conclusions

All mechanisms worked properly.

Container ConOps was as expected.

Early testing and mechanism prototyping can contribute to a better design from PDR.

We need to improve time and risk management.

We are happy to have built an amazing and passionate team from the ground up. We leave with a great amount of experience!

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Documents

Post Flight Review (PFR) CanSat · PDF fileCanSat 2017 PFR: Team #6621 Cuauhtémoc IPN 1 CanSat 2017 Post Flight Review (PFR) Version 1 #6621 IPN Cuauhtémoc