P17104: HABIP-COMMS
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Build & Test Prep

Table of Contents

Team Vision for Build & Test Prep Phase

Summarize: In the few short weeks since our last design review, our team desired to work on the structure and review/finalize our custom PCB schematic. We also wanted to start the PCB layout. At this point in our design, the schematic is done; it has gone through peer and professor review. Next, we will be placing components and performing layout. In addition, the structure for the HAB has been further refined, and prototype building will begin soon.

Custom PCB Update

The updated schematic can be found here: Main COMMS Board Schematic

The following changes have been made since the last review:

The updated custom PCB BOM can be found here: Main COMMS Board BOM

We have started a rough placement of components for the layout of the custom PCB:

Preliminary Custom PCB Component Placement

Preliminary Custom PCB Component Placement

Build/Assembly Part Number Assignments - For Testing Purposes

For 'callouts' in mechanical test plans the following part numbers have been assigned to the manufactured mechanical components.

Assembly Part Numbers

Assembly Part Numbers

Harnessing

Part 'M2-1' will be attached to a central line/connection point using 1/4 inch Wet Environment Rope. M2-1 allows for eight connections points, each with a harness tensile strength of 800 pounds. The individual connection points on M2-1 can each withstand a maximum bearing load of 250 pounds before reaching the yield point of the material - to be verified in testing. The approximate cost of the rope (25 ft) will be roughly 35 USD. Rope clamping methods are under review.

Test Plan Summary

The goal of our test plans is to document how we plan to test the various subsystems that make up this HABIP. Due to the nature of the final product, many of the subsystems can be tested completely independently from the rest of the system. Therefore, test plans have been written for different pieces, such as the APRS, ATV transmitter, the OSD data overlay, general data storage, weight, thermals, and structures. For each of these aspects of the design, a test plan has been written to ensure the engineering requirements laid out in the planning phases of the design are kept.

List of Test Plan Documents

Here is a replication of our engineering requirements for reference:

Engineering Requirements

Engineering Requirements

In Flight Testing:

Risk and Problem Tracking

Risk Management

Risk Management

Risk Management

The working document can be found here.

Problem Tracking

Here is our problem tracking table:
Problem Tracking Table

Problem Tracking Table

Here is a pie chart with our progress on these problems:

Problem Tracking Wheel

Problem Tracking Wheel

The working document can be found here.

Design Review Materials

The following presentation was given on February 2, 2017: Build & Test Prep Design Review Presentation

Notes from the design review can be found here: Build & Test Prep Design Review Notes

Plans for next phase

Team Plans

 Gantt Chart for Next Phase

Gantt Chart for Next Phase

Our Gantt chart working document can be found here: MSD II Gantt Chart

A list of team tasks for the next phase can be found here.

Individual Plans


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