Overview
Project Therion was the entry for the Basic category of IREC 2016. It featured an a dielectric barrier discharge and OpenCV optical flow experiments, composite airframe, custom flight computer (Pyxida), custom chutes, and an experimental parafoil recovery system.
Leadership:
President | VP | Treasurer | Social Chair | Pub. Chair |
|---|---|---|---|---|
| Eric R | Andrew A | Kelly M | Julia CF | Caitlyn F |
| Structures | Payload | Recovery | Propulsion | Avionics |
| Sam J | Andrew K | Piper S | Zach B | Andrew R |
Quick facts:
Vehicle | Mass | Length | Motor Selection | Recovery | Primary Materials |
|---|---|---|---|---|---|
| Therion | 70lbs | 12ft 2in | M3400 | SSDD | Carbon Fiber, Fiberglass, Aluminum |
 |
Project Therion |
| Maximum Altitude: 11,400 ft |
Maximum Velocity: 10,200 ft |
| Maximum Acceleration: 347 m/s |
| Experimental Plasma Flow Modification |
Critical Design Review:
MIT Rocket Team CDR Presentation Slides.pdf
Executive_Summary_IREC2016_CDR.pptx
MIT_Rocket_Team_IREC_2016_PDR.pdf
Flight History:
| Vehicle | Motor | Launch Site | Date | Result |
|---|---|---|---|---|
| Therion I | M3400 | MMMSC | GSE Failure; Loss of Vehicle | |
| Therion II | M3400 | MDRA | Reefed Drogue, No Main | |
| Therion III | M3400 | IREC | June 17, 2016 | Main Failed to Deploy |
Therion-III-Post-Flight-Analysis (1).docx
Vehicles:
Four vehicles were constructed for Project Therion. They were numbered sequentially from I-IV.
Therion I
Therion I was a Phenolic-Fiberglass hybrid vehicle, originally intended for a drop test. Many of its components were uprated to allow for a non-parafoil flight test. This vehicle was destroyed when the launch pad became unsecured from the ground and tipped over just prior to flight. Many components shattered. The fin can and avionics structure were salvaged to fly on Therion II and IV.
Therion II
Therion II was the first all custom composite vehicle built by Rocket Team. The fin can was reused from Therion I to put the team ahead of schedule on fabricating Therion III. The avionics were also recycled from Therion I. Therion II was the first vehicle to fly with the parafoil section integrated. Utilizing pyrotechnic rope cutters (PRCs) the hatch was held shut by 550 Paracord. This system failed as the vehicle broke the speed of sound. The backup recovery system also failed to function nominally. A stray piece of nomex reefed the drogue parachute, while a wire harness simultaneously entangled the main parachute's webbing. This lead to insufficient force to pull the main parachute out of the vehicle.
Therion III
Therion III was the competition flight vehicle. It flew at IREC 2016.
Telemetrum Data file: Therion Flight 3, June 17, 2016
Pyxida Data file: IREC Flight.txt
Therion IV
Therion IV was intended to fly on the Saturday after competition ended to demonstrate our parafoil system. It also served as a reserve of spare parts during IREC. Due to the failure of Therion III it was decided to forgo launching Therion IV. This vehicle featured a hatch section that closed using aluminum ribs and a Pin Release Mechanism. This hardware was finally discarded in September 2017.