1. TESLA Rocket Project Lecture #3 10/28/15

2. Critical Path Activities
TESLA Rocket Overview & Other Stuff
Next Week Evening Session?

3. Select Key Activities PM: SE: Schedule integration – Review next week?
Competition requirements summary – Review next week?
Data submission for competition – Due this week, review with mentor
How much money do we have left
SE:
Flight performance prediction (RASAero) – Review next week?
Competition now requires 10 lbm payload capability
Rocket CAD layout
Mass proprieties
Recovery:
Recovery logic definition

4. UPDATED Project Task Summary
Program Management:
Completion of the program on time and on budget
Competition Requirements Summary
Schedule Development & Management
Aerojet Rocketdyne Grant Proposal
Project Finances
Fund Raising
Logistics
Competition Coordination
Support rocket build
Systems Engineering:
Prop valve actuator mechanism design
Rocket mass properties estimation & tracking
Flight performance analysis
Stability analysis
Requirements management
Aerodynamic drag estimation
Provide analysis support to other teams
Recovery:
Recovery system requirements development
Recovery system concept development
Fab parachute & recovery hardware
Develop recovery logic
Engine / Feed System:
Define rotary actuator requirements
Upgrade ground test stand (propellant valves)
Develop a new ignition system design
Test stand calibration
Engine test conductor
Flight feedsystem & valve actuator design
Support rocket build
Structure:
Fabricate composite fins
Fabricate composite nose cone
Fabricate LOX tank
Launch Rail:
Design launch tower
Fab launch tower
Design & Fab launch lugs
Tower test
Rotary actuator attachment
Avionics, S/W, Telemetry:
Select rotary actuator
Rotary actuator drive electronics
Valve position feedback electronics
Valve driver
Thruster valve control software
Recovery system electronics & S/W
Telementry system design & fab

5. Types of Rockets Liquid Fueled Rocket Solid Fueled Rocket
(rocket motor)
Liquid Fueled Rocket
(rocket engine)

6. 100 lbf Lox/Ethanol Rocket Engine
LOX/Ethanol Rocket Overview
Antenna
Thrust Structure
COPV
Pressurant Tank
Recovery Section
Telemetry Module
Ethanol Tank
LOX Tank
GHeTank
Nosecone Mold
Recovery Parachute
100 lbf Lox/Ethanol Rocket Engine
Batteries

10. Apogee Apogee = Highest point in the rockets flight path Apogee
Orbital Flight
Ballistic Flight

11. Mach Number = Mach Number Speed of the rocket Speed of sound
Speed of sound = (gRT) ½
g = ratio of specific heats (1.4 for air at STP)
R = gas constant (286 m2/sec2/K for air
T = Temperature (K)

12. Mass Terminology
Mass Allocation = Assigned not-to-exceed mass valve for specific items or subsystems
BOL Mass {Beginning of Life Mass} = mass of rocket with full load of propellant and pressurant
Wet Mass = Same as BOL
EOL Mass {End of Life mass} – mass of rocket after all propellants have been consumed

13. Preliminary Mass Allocation {from last year}

14. Center of Gravity (CG)

15. CG will change as propellant is consumed
The CG is Not Fixed
Helium Tank
CG will change as propellant is consumed
LOX Tank
Fuel Tank

16. Revised Station Markings (4/19/15)

17. Coordinate System DefinitionZ X Y

18. Example RASAero Output

19. Example RASAero Output

20. Example RASAero Output

21. Feed System Ethanol Fuel Valve Helium Oxidizer Valve Liquid Oxygen P
Service Valve
Check Valve
Pressure Regulator
Pyro Isolation Valve
Relief Valve
Helium
Liquid Oxygen
Ethanol
Fuel Valve
Oxidizer Valve

22. LOX Feed Line Details
LOX Valve Outlet
LOX Injector Inlet

23. Rocket Engine Nomenclature
Combustion Chamber
Injector
Oxidizer Valve
Fuel Valve
Nozzle
Throat