PDR DETAILED SLIDES Charger Rocket Works University of Alabama in Huntsville NASA Student Launch Kenneth LeBlanc (Project Lead) Brian Roy (Safety Officer) Chris Spalding (Design Lead) Chad O’Brien (Analysis Lead) Wesley Cobb (Payload Lead)

Launch Plans Organizations Huntsville Area Rocketry Association (HARA) with Field in Manchester, TN or Bragg Farms, Toney, AL Phoenix Missile Works with Field in Childersburg, AL Subscale/Component Tests February 8-9: Childersburg, AL March 8-9: Childersburg, AL March 8: Manchester, TN Full Scale Tests March 16: Bragg Farms, Toney, AL April 5-6: Childersburg, AL April 13: Manchester, TN April 20-21: Bragg Farms, Toney, AL

Supersonic Design Considerations Superheated Skin Aerodynamic Forces Rigidity

Subscale Plans Modified ARCAS kit with Nose Cone Profile Level 2 Motors Simulate high G loading Test Sensors

Motor CTI M4770 Complex Motor Assembly Separate Glue/Epoxy Time Dependent Jason Winningham will assemble

Launch Rail Rail Buttons 1” Locations Lower Button – Approximately Fin’s mid chord. Top button – 24 inches above lower Rail 8ft 1in Rail Exit Speed – 131ft/s

Descent EventValueUnits Drogue Release26seconds High Altitude Descent Speed100ft/s Main Release 1000ft Low Altitude Descent Speed7ft/s Impact Energy Bottom Section15.9lbf Impact Energy Nose Cone0.83lbf

Drift

High G Considerations Materials 3-D printed material brittle 6061 Al used at critical interface points Sensors Subscale ARCAS test launches with similar conditions Inspect parts for damage Check for usable data

Payload Bay Build envelope Size defined by subscale Nanolaunch dimensions Preliminary designs allow for some size increase Dielectrophoresis improvements, no significant volume increase Payload at or Close to CG Dielectrophoresis Part of Nanolaunch Forward payload Radio and tracking Additional Nanolaunch Payload

CRW Safety Plan MSDSs, SOPs, and State and Federal regulations. SOP reviews. CPR/ AED training. Facility usage policies.

Parachute Design References FAA Rigger Handbook (344pages) The Parachute Recovery Systems Design Manual (T.W. Knacke). (~730 pages) Two Parachute manuals on hardware, materials, sewing, equipment, etc…

Dielectrophoresis Problems Cryogenic boil off – Muratov (2011) Loss of useable propellant Vapor bubbles develop Liquid collection for engine restart – Blackmon (1965) Solution Non-Mechanical fluid manipulation device Consolidate fuel away from tank walls to reduce heat transfer Easily collect fluid at key locations while reducing dangerous vapor regions

What is Dielectrophoresis? Gradient : [∂/∂x, ∂/∂y,∂/∂z] Polarity Independence 2 : Blackmon, James. Collection of Liquid Propellants in Zero Gravity with Electric Fields. Journal of Spacecraft and Rockets, Vol. 2, No. 3, p 3. Uniform Electric Field Non-Uniform Electric Field

Experiment Fluids Experiment fluids with comparable dielectric constants to common fuels Common fluids for comparison of dielectric constants Peanut oil chosen Highest dielectric constant of experimental fluids Theoretically most responsive to dielectrophoretic force

Mass Statement

Supporting Personnel Dr. Robert Frederick PRC Director UAH Faculty for past 20 years Propellants and Energetics USLI Academic Advisor Dr. David Lineberry PRC Research Scientist 10 Years of Experience NAR / TRA (Level) 1 NSL Course Instructor Tony Hall PRC Test Engineer 10 Years of Experience Jason Winningham NAR/TRA Level 2 HARA Member UAH Employee Previous NASA Rocketry Workshop Leader Amit Patel PRC GRA HARA Member CRW Project Manger NRA / TRA Level 1 Current Team Member