What is OMEN?

OMEN was the 2023-2024 IREC rocket (intercollegiate rocket engineering competition) that competed in the international competition hosted in Spaceport America, New Mexico. OMEN was entered into the 10K COTS category.

Structures

• The nose cone, body tubes, fins, boat tail, and all internal
  machined components being designed and manufactured by the team
• Body tubes:
  • OMEN’s airframe consists of three SRAD body tubes
  • An outer diameter of 6.20 inches and an
    inner diameter of 6.00 inches
  • The team chose to utilize an X-winder
    filament winding machine to produce all three body tubes
• Nose cone:
  • 3.5:1 tangent ogive nose cone due to its good performance in the subsonic and transonic
    regimes
• Fins:
  • four fin configuration was chosen as it is easier to construct due to mirror symmetry across two
    perpendicular planes
  • Cut from 3/16 inch compressed carbon fiber sheets using an OMAX 5-axis waterjet cutter, and have a root chord of 12 inches and span 5.9 inches
  • Calculated the not-to-exceed fin flutter velocity to be 1456 ft/s 
• Bulkheads:
  • Nose cone bulkhead
    • Designed to be weight-reduced from 1.908 oz to 1.25 oz
    • Tapered to fit the internal nose cone geometry
    • Purpose of holding the nose cone tip in place
  • Aft bulkhead
    • Weight-reduced design that reduces the weight from 11.8 oz to 6.23 oz
      
    • Includes a filleted circumference
      
  • Forward bulkhead
    • Differs with the interest of maximizing strain
      
    • Maintains an appropriate safety factor
      
    • Weightreduced from 12.5 oz to 5.51 oz
      

Payload

• Payload name is Richie
• CubeSat deployed at apogee
  
• Objectives:
  
  • Testing an SRAD
    reefed parachute system
    
  • Measure the shock force of the deployment 
    
  • Disreef events using a load cell.
    

Avionics

• Fully SRAD, modular and ethernet enabled flight computer
• Flight computer will collect telemetry and sensor data
• all-Derin avionics bay eases integration and increases durability
• Avionics bay transmits GPS location from a Big Red Bee Beeline ona 70 cm APRS transmitter
• Two RRC3 altimeters redundantly triggers the recovery system