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Project STATIC � Star Tracker and Testing Interplanetary Concrete

�Integrated Subsystem Testing Review (ISTR)

Arapahoe and Red Rocks Community Colleges

Alison Antill, Leighanne Bennett, Nicholas Betz, Ruth Ehler, Sebastian Gomez, Kye Jackson, Christian Mack, Antonino Piscitella, Diego Saenz, Mallory Shaloy

3/22/2024

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ISTR Presentation Outline

Section 0: Action Item Summary
Section 1: Mission Overview
Section 2: Systems Overview
Section 3: Updates on Subsystem Testing Results
Section 4: Integrated Subsystems Test Results
Section 5: Plan for FMSR
Section 6: Updated Summary Test Plan
Section 7: Updated Wallops Test Plan
Section 8: Project Management (see notes)
Section 9: Conclusions, Next Steps, and Questions
Appendix (Not presented)

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Section 0: Action Item Summary

Ruth Ehler

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Action Item Summary

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Provide name, shipping address, and phone number for RockSat hardware delivery – COMPLETED
Expand ISTR plan to be more comprehensive and fully address the items requested in the template. Then update your Summary Test Plan. - Slide 58
Updated budget to show correct program fee amount – Slide 62
Add details on how you will add ballast to your experiment to reach 15 lb (+- 0.5 lbs) – Slide 20
Add labels and dimensions to your CAD models – Slides 12-15, 27-29, 34, 38, 47-48
Include details on batteries – Slide 29
Remove analog line use from User Guide compliance matrix – Slide 24
Review RockSat-X pointing plan from the matrix document sent out with manifest letter to confirm pointing requirements. – Slide 19
Update your WFF Test Plan to include at least one test to ensure system is working with rocket power and telemetry systems (does not have to include a sintering sample). Also address if you plan to charge your batteries. - Slide 60
Provide more details on the how the regolith chamber is secured. Picture is great but lacks labels and doesn't really describe how it all works. - Slide 28
Please upload slides to the drive rather than emailing them - COMPLETED

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Section 1: Mission Overview

Nicholas Betz, Christian Mack, Antonino Piscitella

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Mission Overview and Statement

The STATIC project aims to evaluate how sintering lunar regolith simulant (LRS) in a microgravity environment affects the sintering process. As well as testing the structural integrity and durability of sintered LRS after exposure to a suborbital environment.

The STATIC project also aims to create a cost efficient star tracker for cheaper use on spacecraft in the future. The star tracker will utilize open source software running on a Raspberry Pi, and will use an official Raspberry Pi camera, lens, and filters, mounted on a swivel.

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Primary Mission Overview: Expected Results

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Differences are anticipated between lunar regolith simulants sintered in a microgravity environment and those sintered on Earth. These differences include:

Lack of unified sintering
Densification rate
Grain size distribution
Pore formation
Overall structural deformation

LRS sintered in an RRCC kiln at 1200 C for 3 minutes

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Secondary Mission Overview: Expected Results

The star tracker will be expected to have accurately comparable data to data of which has been professionally analyzed and proven correct. The team aims to create a faster, more space and cost-efficient star tracker that is comparable to the ones currently in use.

Store and Process
Small Space Efficiency
Quick Image Calculations
Accurate Directional Data

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Mission Objectives

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Section 2: Systems Overview

Leighanne Bennett, Ruth Ehler, Christian Mack, Antonino Piscitella, Mallory Shaloy

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Changes since STR

Completed Action Items

Name, shipping address, and phone number for hardware delivery - sent 2/29
Updated FMSR plan - slide 53
Updated Summary Test Plan - slide 54
Details about adding ballast to reach 15 lb - slide 24 (not reflected on 3D models yet)
Labels and dimensions on cad models -
Battery Details -
Analog line use removed from User Guide compliance matrix -
Updated pointing request slide and payload configuration - slide 23
Updated WFF Test Plan - slide 55
Details secured regolith chamber -

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Systems Overview (Models)

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Induction Heating Housing

Electrical Housing

Star Tracker Housing

Induction Heating Housing

Design With

Outer Walls

Design Without

Outer Walls

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Systems Overview: Design Overview

(Unit = Inches)

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Level 2

Level 1

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Systems Overview: Design Overview (Continued)

**(Unit = Inches)

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Electrical Box

Star Tracker

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Systems Overview: Design Overview (Cont.)

**(Unit = Inches)

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Regolith Housing

Induction Heater

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Functional Block Diagrams

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Manifest Location

Manifest as of Mar 13, 2024

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Timer Event Matrix

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Event	Time On	Dwell	Event Description
GSE 1	-	-	-
GSE 2	T-180 sec	540 sec	3 minutes before launch. Power on the computer for the experiments and begin sensor readings
TE-1	-	-	-
TE-2	T+030 sec	360 sec	Activate the sintering experiment; begin internal timing sequence for star tracker
TE-3	-	-	-
TE-R	-	-	-

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Pointing request confirmation

The current pointing request for CCofCo is correct.

The star tracker will be facing zenith as described in the pointing request shown on the right.

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Weight Budget

Under the weight limit
Structural shell will weigh more once subsystem housing is fabricated
The team will ballast the payload

w/ additional housing materials
w/ fabricated box for personal items

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Weight Budget
Subsystem	Total Weight (lb)
Star Tracker	1
Computer hardware	0.5
Crucible	0.13
Induction Coil	2.46
Regolith	0.79
Structural shell (0.125 in thickness)	2.67
Experiment deck	3.3


Total Over / Under	10.85
Limit	15 lbs

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Power Budget

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STATIC Project Power Budget
Subsystem	Voltage (V)	Current (A)	Time On (min)	Amp-Hours
Sensors	5	5.36E-05	8.5	7.5933E-06
Star Tracker	5	0.6	2.5	0.025
Regolith	5	0.16	2	0.006
Control Components	5	3	8.5	0.425

Regolith Battery Power Power: Two 6S LP Batteries 22.2 V, 1800Mah			Total (A-hr):	0.456
			Over/Under	0.044

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Pin Assignments - Power

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Power Pin	Function	Intended Use
1	GSE 1	Not used by CCofCO
2	Timer Event Redundant (TE-RA)	Not used by CCofCO
3	Timer Event Redundant (TE-RB)	Not used by CCofCO
4	Timer Event 1 (TE-1)	Not used by CCofCO
5	GND	GND
6	GND	GND
7	GND	GND
8	GND	GND
9	GSE 2	Power for main computer, camera and sensors
10	Timer Event 2 (TE-2)	Timing trigger to begin sintering process and timing sequence for star tracker camera
11	Timer Event 3 (TE-3)	Not used by CCofCO
12	GND	GND
13	GND	GND
14	GND	GND
15	GND	GND

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Pin Assignments - Telemetry

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Telemetry	Function	Intended Use
1	Analog 1	Not used
2	Analog 2	Not used
3	Analog 3	Not used
4	Analog 4	Not used
5	Analog 5	Not used
6	Analog 6	Not used
7	Analog 7	Not used
8	Analog 8	Not used
9	Analog 9	Not used
10	Analog 10	Not used
11	Parallel Bit 1 (MSB)	Not used
12	Parallel Bit 2	Not used
13	Parallel Bit 3	Not used
14	Parallel Bit 4	Not used
15	Parallel Bit 5	Not used
16	Parallel Bit 6	Not used
17	N/C	N/C
18	Ground	Ground

19	Ground	Ground
20	Parallel Bit 7	Not used
21	Parallel Bit 8	Not used
22	Parallel Bit 9	Not used
23	Parallel Bit 10	Not used
24	Parallel Bit 11	Not used
25	Parallel Bit 12	Not used
26	Parallel Bit 13	Not used
27	Parallel Bit 14	Not used
28	Parallel Bit 15	Not used
29	Parallel Bit 16 (LSB)	Not used
30	Parallel Read Strobe	Not used
31	N/C	N/C
32	RS-232 Data (TP1)	System status information
33	RS-232 GND (TP2)	Ground
34	N/C	N/C
35	N/C	N/C
36	Ground	Ground
37	Ground	Ground

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User Guide Compliance

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Requirement	Status/Reason (if needed)
Center of gravity in 1" plane of plate?	Yes
Weight 15.0+/- 1.0	Yes
Max Height < 5.13”	Half deck < 5.13"
Bottom of deck has flush mount hardware?	Yes
Within Keep-Out Zone	Yes
Using < 10 A/D Lines	Not Using
Using/Understand Parallel Line	Not Using
Using/Understand Asynchronous Line	Yes
Using X GSE Line(s)	Yes, GSE 2
Using X Non-Redundant PWR Lines (TE-1, TE-2, TE-3)	Yes, TE-2
Using X Redundant Power Lines (TE-R)	No
Using < 1 Ah	Yes
Using <= 28 V	Yes
Using RF (If yes, list frequency and TX Power)	No
Using deployable?	No
Whole team consists of US Persons	Yes
Using ITAR and/or Export Controlled hardware	No

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Special Requests Summary

Charge the batteries before launch
Procedure for full mission integration (without regolith subsystem)

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Section 3: Updates on Subsystem Testing Results

Nicholas Betz, Ruth Ehler, Sebastian Gomez, Kye Jackson, Christian Mack, Mallory Shaloy

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Regolith – Induction Heating Subsystem

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Subsystem contains:

Induction heating unit
Copper coils
Graphite crucible

Graphite crucible

Induction heating unit

Copper coils

Graphite Crucible

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Drawing/model/sketch of subsystem
Power, data, volume, and weight of this subsystem
Mechanical and electrical interfaces with other subsystems/Wallops
How it will be connected internally and/or externally to other systems
Hardware used

Include, where possible, pictures of hardware to be ordered or on hand

Statement on whether this subsystem design is FINAL

If not FINAL, list what needs to still be done with the design

Here you can see the induction heating system in the bottom three images, we will be removing the fans since they won't have any functionailty in space this also allows us to have more room on the payload. The circuit of the induction system will sit in a box separate of the coil as you can see in the top-down view.

You can also see the crucible in the top-down view in the center of the copper coils. Please go to the next slide where we can see the coil and crucible housing

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Regolith – Secured Regolith Chamber

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Alumina Screws

Ceramic Fiber Blanket

Ceramic Fiber Board

Graphite Crucible

Copper coils

Subsystem contains:

Aluminum housing
Copper coils
Graphite crucible
Alumina screws
Ceramic fiber blanket

- Temp range 1260 C

Ceramic fiber board

- Temp range 1450 C

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Regolith - Power

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Subsystem contains:

Two 6S Lipo Battery 1800Mah 25C 22.2V in series for 44.4V

XT60 XT60H female connector plug with 12AWG 10cm silicone wire.

12AWG wire

35-amp fuse

Battery housing

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Regolith

Completed Testing: Date:

Kiln sintering test – Complete 3/16/2024
Dry run test – Complete 3/18/2024
Insulation test – Complete 3/18/2024
Induction sintering test – Complete 3/19/2024
Solid state relay switch test – Complete 3/19/2024

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Regolith – Completed Testing

Kiln sintering test: Successful

LRS was put into graphite crucibles and sintered at 1200 C for three minutes.

Induction sintering test: Successful

LRS was put into a graphite crucible and placed inside the induction coils.
1200 C was achieved in approximately 180 seconds.

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Regolith – Completed Testing (Cont.)

Dry run test: Successful

Induction sintering without water flowing through copper tubing.

Insulation test: Successful

Crucible was wrapped in ceramic fiber blanket.
The outer coil got to 350 C.
No damage to blanket.

Solid state switch test: Unsuccessful

Used to inhibit power to sintering experiment during ground testing.
The current model did not perform. A new one has been ordered.

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Undamaged ceramic blanket

Induction system

Solid state relay switch

Graphite crucible

Batteries

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Regolith

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List tests that remain to be completed and a date as to when they will be completed
How will this subsystem be tested with another subsystem and when

Here are the regolith tests that are yet to be completed,

We will be sintering while letting the raspberry pi control the system. This is a step towards programming and regolith integration.

Then we will be completing integrated containment thermal insolation testing along with heat capacity and timing testing, we want to ensure that our project will heat up in time in space and create our best estimates for how long that will take based on the heat capacity.

Then we will be completing Vibration and G-force testing to ensure we are compliant with wallops requirements.

We will then be integrating the system onto our payload, with this step we will have structural and regolith integration. With the two systems attached we will repeat vibration and g-force testing.

Lastly we will integrate the regolith subsystem with electrical, where we will test the raspberry pi with simulated rocket power.

Next slide please

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Star Tracker

Power Consumption 5v, Volume: 12.68 cubic inches, Weight: 1.15 lbs
This unit will only interface with the raspberry pi of the electrical subsystem.
This subsystem design is FINAL.

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Pi Camera

Housing

Camera Mount

Servo Motor

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Star Tracker

Completed Tests:

Test program to move the servo and take pictures.
Test images using the specified camera and lens.
Mechanical 3d printed prototypes for dimensional testing.
Test images being run through the LOST software.
Testing of power consumption.
Lens Capabilities
Low Light Environments
Lens Glare / Focus and Accuracy

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Star Tracker

Testing Results

Camera lens ability in low light environments.

Servo and partial structure test (both the servo and camera mounts strength).

Multiple trial runs of LOST software system with test images, and raspberry pi camera generated images.

Successful glare and lens capability testing.

Software is up and running on raspberry pi and will successfully read and interpret images taken by the team's camera setup.
Testing has led to complete understanding of subsystem and almost finalized.

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RasPi

Camera

Images:

Software

Test:

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Star Tracker

Remaining Testing:

Test window durability and clarity for protected viewing.
Integration of both the Programming and Star Tracker subsystems.
Ensure structural build of the star tracker enclosure is complete.

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Date:

3/29/2024

4/05/2024

4/12/2024

Main Housing

Lid Housing

Clear Window

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Electrical

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Solid State Switch

LM2596 Voltage Regulators

Zero2Go Omini

Raspberry Pi 4B

Power - 0.428 Ah

Data - RS-232

Volume – 10.35in x 7.18in x 2.25in; A: 55.76in^2

Weight – 0.5lbs

Will interface with GSE and TE electrical systems at Wallops

Will interface with other on-board systems via thermally resistant wiring where possible

Will interface with star tracker camera via data cable

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Electrical – Hardware

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LM2596

TMP36

Metal Keylock Switch

Atmospheric Sensor

Raspberry Pi 4B

Zero2Go Omini

Solid State Relay

Analog to Digital Converter

RS-232 Breakout

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Electrical – Quick Status

Completed Testing: Date:

Sensor wiring test – Complete 2/19/2024
Keylock switch wiring test – Complete 3/13/2024
Sensor measurement test – Complete 3/18/2024
Solid state switch wiring test – Complete 3/19/2024
Voltage regulator wiring test – Complete 3/19/2024
Raspberry Pi power test – Complete 3/19/2024

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Electrical – Completed Testing

Sensor wiring and measurement tests

The sensors were wired to the Raspberry Pi computer and initial measurements were taken to test and calibrate the sensors. Successful tests.

Metal keylock switch wiring test

The metal keylock switch was wired and tested to ensure no power flowed through the circuit while the switch was off. Successful test.

Voltage regulator wiring test

The voltage regulators were wired to a 28V power source and calibrated to output the required 5V. Successful test.

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Sensor wiring and measurement tests

Voltage regulator wiring test

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Electrical – Completed Testing (Cont.)

Raspberry Pi power test

During this test, the Raspberry Pi was wired to the voltage regulator, which was then wired to a 28V power source and powered on. Successful test.

Solid state switch wiring test

During this test, the solid-state switch was wired to test functionality. Failed test.

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Raspberry Pi powered by 28V power source

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Electrical

Remaining Tests: Date:

RS232 wiring test 3/29/2024
Solid state switch regolith activation 3/29/2024
Full power systems test 4/05/2024

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Programming – Quick Status

Completed Testing: Date:

Star Tracker software timing test – Complete 2/16/2024
Sensor package test – Complete 3/20/2024
Servo motor control test – In progress
Star Tracker camera test – In progress

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Programming

Completed Testing

Star Tracker software timing test

During this test, several simulations of full in-flight calculations were run with accurate test images. Successful test

Sensor package test

This test activated the sensors at power on of the Raspberry Pi. It also recorded the sensor data into a csv file for future use. Successful test.

Servo Motor and camera control test

The servo motor and camera have been controlled using identical Raspberry Pi hardware, however it has not been tested with current hardware. Successful test.

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Sensor test readouts

Test data recorded into csv file

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Programming

Remaining Tests: Date:

Star Tracker full integration test 03/29/2024
Timer event activation test 04/05/2024
Full mission test 04/12/2024

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Mechanical

2.6 Lbs, no electrical components
Wires run through housing and connect to plate & Wallops equipment
Houses all subsystems
1/8" 2024-T3 aluminum from McMaster-Carr
Physical proof of concept will be built, design not finalized until completed.

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Aluminum sheet

Induction coil

Programming

Star Tracker

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Mechanical

Delay in part ordering

Assembly has not been started

Future testing includes:

Stress tests

Durability (drop test)
Vacuum chamber
Heat resistance

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10%

Star Tracker

Induction Coil

Programming

Induction Heater

Enclosed Walls

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Mechanical

Convert solidworks models to STL files to be CNC machined
Assembly will be completed by 4/5

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Section 4: Integrated Subsystems Test Results

Leighanne Bennett

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Integrated Subsystems Test

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Regolith and Electrical subsystems

This test will verify that the regolith system is properly inhibited and activated by the electrical systems

Initial testing was completed on 03/18/2024. Future testing will be completed by 03/29/2024

Additional tests include testing of new solid-state switch as well as activation sequence with Raspberry Pi, further testing of inhibition switch and full flight simulation.

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Electrical and Programming subsystems

This will verify that the voltage regulators bring down the 28V supplied by the rocket to the 5V required by the Ras pi to function.

Initial testing was completed on 03/19/2024

Additional tests will add subsystems into this configuration to verify functionality and full flight simulation.

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Programming/Electrical and Star Tracker

This testing will verify that the star tracker is correctly powered and controlled by the main computer.

Initial testing was completed 2/16/2024. Future testing will be completed by 04/05/2024.

Additional tests include timer activation of star tracker and full star tracker flight simulation.

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Mechanical, Star Tracker, and Regolith

This test will verify that the experimental systems integrate into the payload structure and can withstand the pressures of flight on the rocket.

Testing will be completed by 04/19/2024.

Additional tests include physical integration of components and vibration.

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All subsystems

This test will verify all subsystems work together as they are intended to.

Testing complete by 04/19/2024

Additional tests include a full flight simulation with all subsystems integrated

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Section 5: Plan for FMSR

Ruth Ehler

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Section 6: Updated Summary Test Plan

Ruth Ehler

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Section 7: Updated Wallops Test Plan

Mallory Shaloy

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Wallops Test Plan

Pre-Integration

To demonstrate the safety of the regolith sintering experiment, the power systems will need to be tested prior to integration as the structure of our payload prevents the loading of the regolith and crucible once the payload is integrated into the rocket.

The Raspberry Pi will be powered on
A voltage will be applied to our control pins on the Raspberry Pi to activate the regolith system circuit
The experiment will be powered off after demonstration
The metal key lock inhibition switch will be turned to the off position to inhibit the regolith experiment
The regolith in a graphite crucible will be added to the payload
The payload will be sealed

Integration

Double check inhibition of regolith system with metal key lock switch
System Power/Timing - Ensure all subsystems are receiving power, transmitting data, and have the correct timing sequence

Post-Integration

Access exterior of payload to turn the key lock inhibition switch to on position to allow experiment to run during flight

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Section 8: Project Management

Leighanne Bennett

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Budget

Since the STR, the following items have been ordered:

Induction Heating Coil
20mm graphite crucibles
40mm graphite crucibles

The following items still need to be ordered:

Window for star tracker

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Classification	Schools
Actual	ACC	RRCC	Combined
Travel	$5,000.00	$5,000.00	$10,000.00
Materials	$1,508.54	$616.07	$2,070.66
Flight Fee/ Shipping	$7,500.00	$7,500.00	$15,000.00
Total Spent	$14,008.54	$13,116.07	$27,070.00
Total Remaining	$491.46	$1,383.93	$1,875.39

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Purchase List

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Final Total=	$2,070.66

Product Name	Cost	Purchase Date	Delivered?
2024 T3 Aluminum Sheet 24" x 48", 1/8" thickness	$383.96	1/25/2024	Y
Ceramic Fiber Insulation: Aluminum Silicate, 5 ft Lg, 4 ft W, 1/2 in Thick, 10 lb Wt, 0.75 R-Value	$53.95	2/8/2024	Y
Adafruit DC & Stepper Motor HAT for Raspberry Pi - Mini Kit	$21.78	2/9/2024	Y
Uxcell a11112200ux0536 Electric 2 Positions ON Off Metal Keylock Switch w Keys	$5.99	2/9/2024	Y
Blind Rivet,1 9/40 in L,1/8 in dia,PK100: Inch, 1 7/32 in Overall Lg, 1/8 in Body Lg, Dome, 100 PK	$6.56	2/8/2024	Y
MILWAUKEE ELECTRIC TOOLS CORP 2550-22 M12 Rivet Tool Kit (2550-22)	$327.95	2/9/2024	Y
Lipo Charger H B6 RC Charger	$37.97	2/9/2024	Y
Zero2Go Omini: Wide Input Range, Multi-Channel Power Supply for Raspberry Pi	$19.95	3/12/2024	Y
Induction heating coil	$85.64	3/19/2024	N
20mm by 20mm graphite crucibles	$20.98	3/19/2024	N
40mm Graphite Crucibles	$9.50	3/19/2024	N
Raspberry Pi 4 Model B - 4 GB RAM		3/20/2024	N
RS232 MAX3232 to TTL Serial Port Converter Module DB9 Connector MAX232	$14.01	3/20/2024	N

Product Name	Cost	Purchase Date	Delivered
Induction heating coil	$50.27	10/31/2023	Y
SparkFun Atmospheric Sensor Breakout - BME280	$39.52	10/31/2023	Y
Temperature Sensor - TMP36	$11.63	10/31/2023	Y
Graphite Crucible	$35.72	11/7/2023	Y
Alumina Discs	$72.18	11/14/2023	Y
Raspberry PI 4Gb	$110.16	11/7/2023	Y
Voltage Regulator Converters		10/31/2023	Y
Arducam Lens for Raspberry Pi HQ Camera, Wide Angle CS-Mount Lens, 6mm Focal Length with Manual Focus and Adjustable Aperture	$22.76	12/12/2023	Y
Witty Pi 4 L3V7 - RTC & Power Management for Raspberry Pi	$27.50	12/12/2023	Y
MG90S 9G Micro Servo Motor Metal Geared Motor	$7.38	12/12/2023	Y
20KG Servo Motor Metal Geared Motor	$11.88	12/12/2023	Y
BXI Ceramic Fiber Thermal Insulation Board	$19.95	1/3/2024	Y
5.2mm - Sandeply Plywood	$29.88	1/12/2024	Y
Zuvas Black ABS Plastic Sheet	$19.99	1/24/2024	Y
Zeee 6S Lipo Battery	$41.98	1/24/2024	Y
35 Amp Fuse	$4.99	1/24/2024	Y
M8 Alumina Nut	$82.37	1/25/2024	Y
M8 x 60mm Alumina Hex Head Bolt	$183.74	1/25/2024	Y
Fuse holder	$9.99	1/24/2024	Y
Water Pump	$19.89	1/24/2024	Y
Heat Shrink Tubing	$6.99	1/24/2024	Y
YUWYP 6S Lipo Battery 1800Mah 25C 22.2V	$203.98	1/24/2024	Y
T60 Upgrade Plug Male Female Extension Connector	$13.99	1/24/2024	Y
Thermocouple Thermometer, RISEPRO 4 Channel K Type Digital Thermometer	$32.90	1/24/2024	Y

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Estimated Team Size

Total of 10 team members (Recently added 2 new members)
2 team members will be funded for integration and launch

One member from each school for integration
One member from each school for launch
Different team members from each school will be at each event
Estimated 6 – 8 additional team members for launch

Members will conduct fundraising or pay out of pocket
The team plans to have a solidified list by integration

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Section 9: Conclusions, Next Steps, and Questions

Ruth Ehler

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Worries and Potential Failure Points

Regolith

Thermal insulation
Solid state switch

Star Tracker

Thermal insulation

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Next Steps Before the FMSR

Structural assembly and subsystem housing assembly
Subsystem testing including payload stress tests
Integrating all subsystems together

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Conclusions

Regolith

The ability to sinter lunar regolith simulant in a microgravity environment will pose valuable data for humanity. Understanding how this in-situ resource will be affected in these environments during the sintering process gives us vital information for future missions such as the Artemis mission.

Star Tracker

Future missions will also require efficient and intelligent navigation. Creating a cost-efficient star tracker for cheaper use on future spacecraft will be vital for navigating our solar system and eventually our galaxy.

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Questions

Will we be able to recharge the battery before flight?
Will we be able to test our power systems prior to integration on the rocket?

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Appendix

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Appendix – Detailed Schedule

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Date	Event	Complete? N/Y or IP (In progress)
3/8/2024	Begin wiring �1.) Connect solid state relay to ras pi�2.) Connect solid state relay to keys switch �3.) Connect the regolith experiment to ras pi. �Stress tests (heat, drop test, etc.) �Dry Run test in vacuum chamber.�Test the motor hat and the zero to go raspberry pi�Test all components�Lens Filter Testing Housing Assembly	RRCC
3/15/2024	Subsystem structural integration. �Vibration testing and G force shock testing.�Complete Lens Filter Testing�Subsystem integration testing�Regolith activation sequence testing	RRCC
3/22/2024	ISTR review	ACC
3/29/2024	Subsystem structural housing assembly	RRCC
3/27/2024	Subsystem integration testing	ACC
3/27/2024	Final payment due	RRCC

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Appendix – Structural Timeline

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Date	Event	Complete? N/Y or IP (In progress)
3/15/2024	STR / Riveting	IP
3/15-3/29	Machining plan�Cut aluminum to housing dimensions with an extra inch on all sides for riveting�Bend the extra inch of aluminum to overlay so we can rivet�Drill holes for rivets�Rivet overlaid aluminum together�Build star tracker housing	IP
3/29/2024	Subsystem structural integration
3/29/2024	Subsytem structural integration �Stress tests (heat, drop test, etc.)
3/22/2024	ISTR Review Subsystem structural integration testing	IP
4/5/2024	Integration testing
4/5/2024	Full system testing

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Appendix – Programming Timeline

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Date	Event	Complete? N/Y or IP (In progress)
3/1/2024	Integrate Star Tracker motor and camera with Raspberry Pi board	IP
3/8/2024	Begin wiring �1.) Connect solid state relay to ras pi�2.) Connect solid state relay to keys switch�3.) Connect the regolith experiment to ras pi	IP
3/15/2024	Subsystem structrual integration� Regolith activation sequence testing and structural assembly�All System and Power Testing	IP
3/22/2024	ISTR Review	Y
3/29/2024	Integration testing
4/5/2024	Finish wiring and integration as needed

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Appendix – Star Tracker Timeline

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Date	Event	Complete? N/Y or IP (In progress)
3/1/2024	Determine materials for view window and housing�Order materials for view window�Determine build steps for housing�Integration: Pi Camera and LOST Software	IP
3/1/2024	Connect star tracker to pi board�Connect pi board to power�Integration: Servo Motor Control and LOST Software	Y
3/8/2024	Test the motor hat and the zero to go raspberry pi�Test all Star Tracker components�Lens Filter Testing	IP
3/15/2024	Subsystem structural integration Complete Lens Filter Testing	IP
3/20/2024	Order Window for Pi Camera
3/22/2024	ISTR Review	Y
3/29/2024	Test Window for Pi Camera
4/5/2024	Integration: Programming and Star Tracker
4/12/2024	Integration: Star Tracker and Mechanical Systems
4/26/2024	FMSR review

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Appendix – Regolith Timeline

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Date	Event	Completed? N/Y or In Progress (IP)
3/1/2024	Insulation test and sintering test	IP
3/8/2024	Dry Run test in vacuum chamber	IP
3/16/2024	Kiln sintering test	Y
3/18/2024	Dry run test�Insulation test	Y
3/19/2024	Induction sintering test�Solid state relay test	Y
3/22/2024	ISTR Review	Y
3/29/2024	Subsystem structural integration Vibration testing and G force shock testing
4/5/2024	Heat capacity/timing test
4/12/2024	vacuum test
4/19/2024	Sintered regolith structural testing/microscope analysis
4/26/2024	FMSR review

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Appendix - Student/Mentor Work Plan

External mentors

Advisors from other COSGC teams help with problem-solving
Continued variety of guidance from past RRCC and ACC Space Grant Teams
Additional Acquaintances

William Mason of Cedar Rapids, IA

Retired engineer who built lenses for particles accelerators
Expertise with ceramic and glass artistry
Assisted our search for payload insulation

Clint Mitchel

Aerospace electrical engineer
Participated in Orion mission, asteroid mining, NASA missions
Assisted in power source and circuitry

Weekly meetings with advisors (Jennifer Jones, Lynne Albert, and Annie Strange)

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Appendix - Partnerships

No changes since STR

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