Subsystem Build & Test
Table of Contents
Project RecapA hybrid rocket engine is a device that is used to propel an object, generally a rocket, to a user specified point in the atmosphere. The engine can achieve this by converting the chemical energy of the propellants into thermal energy, and ultimately converting that into mechanical energy that imparts a change in momentum on the rocket. The hybrid engine differs from other engines because of the fact it uses a liquid oxidizer, with a separate solid fuel. Separating the fuels makes it inherently safer to store and operate than a traditional liquid or solid motor. The purpose of this project is to build a custom hybrid engine test stand for RIT Launch Initiative to launch a rocket to 30,000 feet at the 2019 Intercollegiate Rocketry and Engineering Competition (IREC). The test stand must be built to withstand the pressure and thrust of the rocket, as well as the cold and hot fire tests that the rocket must go through in order to be launch ready. It must be safe to handle, reusable, high performing, environmentally friendly, and comply with all IREC and government regulations. By year's end, the engine must be ready for tests like the static hot hire test, cold flow test, proof pressure test and system leak test in the bunker on RIT’s campus.
Team Vision for Subsystem Level Build & Test PhaseDuring this phase, the team worked to test the individual subsystems and ensure that they are ready to be integrated into the final system. Many steps were also taken to ensure a high probability of success in a single launch attempt.
In particular, the team focused on:
- Constructing and Analyzing Subsystems
- Testing and Evaluating Subsystems
- Preparing all Systems for Full Functionality
Mechanical System Updates
- All material stock has been received.
- Clamp parts have been cut by water jet.
Mechanical System Next Steps
- Fasteners need to be purchased.
- Clamp parts need to be refined by mill, like ID of clamp to be 6.55" and hole extrusions for bolts and bearings.
- Measure k-value of spring for pre-load system.
- Machine adapter ring and force plate.
Electrical and DAQ Systems Updates
- DAQ system is calibrated and ready for mass flow rate sensor, as well as the accelerometers.
- The NI-cDAQ system will be in the bunker, and encased in a bud box. This will prevent any damage to the device, and is cheap to implement.
- A computer will be provided by RIT to run the LabView software and record data.
- DAQ hardware has 8GB of RAM internally that can be programmed to store all of the data, much faster than a computer. This can and will provide adequate storage of data.
- Data will be instantly exported to an Excel file on the computer, and will be done so through LabView.
- Mass Flow Rate Sensor to be measuring at a rate of 100 Hz which is sufficient for measuring the flow rate.
Mechanical Systems Build Progress
Electrical Systems Test Results
Risk and Problem Tracking
Functional Demo MaterialsSubsystem Build and Test Presentation
Plans for next phase
Individual Completed Goals and New Goals
|Team Member Name||Subsystem Build & Test Three Week Goals||Next Phase Three Week Goals|