Primary Objectives and Success Criteria
- To develop and test an autonomous ocean recovery vehicle that will house a BalloonSat payload and is capable of surviving in near-space conditions.
- To develop and test an autonomous ocean recovery vehicle that will house a BalloonSat payload and autonomously return to a designated recovery location on the east coast of Oahu after being dropped into the ocean up to 5 miles offshore.
- To integrate the COSMOS platform to establish communications with mission control.
- The autonomous ocean recovery vehicle is successfully able to withstand all near-space condition tests.
- The autonomous ocean recovery vehicle is successfully able to propel and steer itself through the ocean to the designated recovery location from a drop point up to 5 miles offshore in typical spring weather conditions.
- The GPS and sensors are able to transfer engineering data to the GCS through COSMOS.
Primary Objective Performance Status
Current status: Hull prototype manufactured and tested
Current status: Successful ocean test of Ardupilot Mission Planner for autonomous mission and operations
Current status: COSMOS agents coded and successfully integrated into a temperature sensor onboard the recovery vehicle
Secondary Objectives and Success Criteria
- To graduate from the University of Hawaii at Manoa with a Mechanical Engineering degree in Spring 2021.
- To bring favorable publicity to the University of Hawaii at Manoa College of Engineering and Department of Mechanical Engineering.
- Passing ME 481 and ME 482.
- Favorable articles and features about UHABS-7 appear in the media.
Top-Level Requirements
| Requirement ID | Object Number | Requirement Description | Priority | Risk | Verification Method | Child Requirements |
|---|---|---|---|---|---|---|
| SYS001 | 1.1.1 | The recovery system shall autonomously return to a designated point onshore up to 5 miles off the east side of the Oahu coast. | Mandatory | Medium | Test | MECH001 ELEC004 |
| SYS002 | 1.1.2 | The recovery system shall be able to transmit and receive data and command signals from 5 miles offshore. | Mandatory | Medium | Test | ELEC001 ELEC003 GCS001 GCS003 GCS004 |
| SYS003 | 1.1.3 | The recovery system shall remain fully functional after 60 minutes in near-space conditions. | Mandatory | Medium | Test | MECH009 MECH010 |
| SYS004 | 1.1.4 | The recovery system shall remain fully functional after an ocean impact at a speed of 15 feet per second. | Mandatory | Medium | Test | MECH002 MECH007 |
| SYS005 | 1.1.5 | The recovery system shall have data, location, and audio functionality after a terrestrial impact at a speed of 15 feet per second. | Mandatory | Medium | Test | MECH002 MECH008 |
| SYS006 | 1.1.6 | The recovery system shall remain fully functional after being exposed to ocean conditions for a specified time. | Mandatory | Medium | Test | MECH004 MECH005 MECH006 MECH011 |
| SYS007 | 1.1.7 | The UHABS-7 system shall use COSMOS for data management. | Mandatory | Medium | Test | ELEC005 GCS002 |
| SYS008 | 1.1.8 | The recovery system shall be clearly visible and audible at the recovery location. | Mandatory | Low | Inspection | MECH003 MECH004 MECH005 MECH006 |
| SYS009 | 1.1.9 | The recovery system shall collect telemetry and mission data. | Mandatory | Medium | Test | ELEC002 GCS001 GCS004 |
Mechanical Requirements
| Requirement ID | Object Number | Requirement Description | Priority | Risk | Verification Method | Child Requirements |
|---|---|---|---|---|---|---|
| MECH001 | 1.2.1 | The recovery vehicle shall be able to propel itself forward through the ocean in typical conditions with the weight of the payload | Mandatory | Medium | Test | SYS001 |
| MECH002 | 1.2.2 | The recovery vehicle shall have a detachable parachute that slows the descent of the recovery vehicle to 15 feet per second when fully deployed. | Mandatory | Medium | Test | SYS004 SYS005 |
| MECH003 | 1.2.3 | The recovery vehicle shall have an audible and waterproof location beacon capable of functioning continuously for 24 hours. | Mandatory | Medium | Test | SYS008 |
| MECH004 | 1.2.4 | The recovery vehicle shall be clearly marked with contact information that will still be visible after extended exposure to saltwater and sunlight. | Mandatory | Low | Inspection | SYS006 SYS008 |
| MECH005 | 1.2.5 | The recovery vehicle shall have an American flag that will still be visible after extended exposure to saltwater and sunlight. | Mandatory | Low | Inspection | SYS006 SYS008 |
| MECH006 | 1.2.6 | The recovery vehicle shall be painted in a waterproof, highly visible color that will not be affected by extended exposure to saltwater and sunlight. | Mandatory | Low | Inspection | SYS006 SYS008 |
| MECH007 | 1.2.7 | The mechanical subsystem shall be able to withstand an ocean impact at a speed of 15 feet per second. | Mandatory | High | Test | SYS004 |
| MECH008 | 1.2.8 | The mechanical subsystem shall be able to protect the payload to withstand a terrestrial impact at a speed of 15 feet per second. | Mandatory | High | Test | SYS005 |
| MECH009 | 1.2.9 | The mechanical subsystem shall survive in near space temperatures for 60 minutes. | Mandatory | Medium | Test | SYS003 |
| MECH010 | 1.2.10 | The mechanical subsystem shall survive in near space pressures for 60 minutes. | Mandatory | Medium | Test | SYS003 |
| MECH011 | 1.2.11 | The mechanical subsystem shall survive in ocean conditions for a specified time. | Mandatory | Medium | Test | SYS006 |
Electrical Requirements
| Requirement ID | Object Number | Requirement Description | Priority | Risk | Verification Method | Child Requirements |
|---|---|---|---|---|---|---|
| ELEC001 | 1.3.1 | The electrical subsystem shall be able to receive and carry out commands as given by the GCS. | Mandatory | Medium | Test | SYS002 |
| ELEC002 | 1.3.2 | The electrical subsystem shall be able to collect data at specified intervals throughout the duration of the mission. | Mandatory | Medium | Test | SYS009 |
| ELEC003 | 1.3.3 | The electrical subsystem shall be able to transmit data at specified intervals throughout the duration of the mission. | Mandatory | Medium | Test | SYS002 |
| ELEC004 | 1.3.4 | The onboard electrical subsystem shall sufficiently power all electronic components onboard the recovery system for the duration of the mission. | Mandatory | Medium | Test | SYS001 |
| ELEC005 | 1.3.5 | The electronic components shall be compatible with COSMOS. | Mandatory | Medium | Test | SYS007 |
Ground Control Station Requirements
| Requirement ID | Object Number | Requirement Description | Priority | Risk | Verification Method | Child Requirements |
|---|---|---|---|---|---|---|
| GCS001 | 1.4.1 | The GCS shall receive all sensory, imagery, and GPS data throughout the duration of the mission. | Mandatory | High | Test | SYS002 SYS009 |
| GCS002 | 1.4.2 | The GCS shall use COSMOS to manage mission data. | Mandatory | Medium | Test | SYS007 |
| GCS003 | 1.4.3 | The GCS shall transmit commands and tasking to the recovery system. | Mandatory | Medium | Test | SYS002 |
| GCS004 | 1.4.4 | The GCS shall have a transmission range of 5 miles. | Mandatory | Low | Test | SYS002 SYS009 |