Requirements, Challenges, and Solutions

  • • Rocket must reliably and accurately achieve apogee of 5280ft
  • • Reliably deploy UAV at safe working altitude of 2500ft
  • • Have a descent rate between 50-100 ft/s with drogue chute deployed, and between 17-22 ft/s with main chute deployed
Challenge Solution
Requirement for the rocket to reach as close to 5,280 ft AGL as possible Targeting a specific altitude is a difficult requirement, so it will be necessary to perform a great deal of modeling, which will include a RockSim model (that is validated against actual flight hardware mass/positioning data), an actual test launch for model verification, and potentially a custom validation model in MATLAB
Dependence on launch
conditions for apogee
A flexible ballast will be used so that it is possible to tune the mass of the rocket on flight day
Recovery of all components of the rocket In order to assist in recovery of rocket components, the parachutes will be sized in accordance with range restrictions, an ELT will be placed on the rocket, and all components will be tied together. Furthermore, an additional MATLAB model may be used to extrapolate predicted landing site from telemetry.
Modeling fin flutter Perform research on previous flutter modeling projects, including aircraft wing flutter and existing fin flutter spreadsheets for rockets.
Development of the high speed camera system Use off the shelf components and standard high power rocketry methods for mirror mounting. Purchase cameras early and start development work prior to CDR
Strain gauge data acquisition Request assistance from MIT faculty and staff that have worked with data acquisition systems in the past. Work with them early and often to develop a robust system.
Rocket safety with fluttering fins Design rocket to be stable with 3 fins that will not flutter. If fins are expected to be liberated during flight, tether outside of fin to rocket body so it is captured and does not fall free.
New member education Due to a large group of new members to the team, educational sessions on high power rocketry and other relevant topics will be held to keep the team up to date.