project ares university of central florida nasa student launch 1/28/2015
TRANSCRIPT
Project Ares
University of Central Florida
NASA Student Launch
1/28/2015
University of Central Florida
Length: 81.75 in. Diameter: 4 in. Weight: 9.26 lb
Final Launch Vehicle Dimensions
University of Central Florida
Final AGSE Dimensions
Body of the Chassis: 21 in. Body and Arm: 33 in. Electronics Box :14 in. x 8.5 in. Box : 8.5 in. wide Rover: 12"
University of Central Florida
Final Motor Choice
Full Scale will use Cesaroni J360 Burn Time:
2.8s
Propellant Weight: 606g
Total Impulse: 228.38 lb*s
Max Thrust: 125.736 lb
Average Thrust: 81.448 lb
University of Central Florida
Flight Stability and Static Margin Diagram Center of Gravity
57.705 in.
Center of Pressure 67.843 in.
Stability Margin 2.53 Cal
University of Central Florida
Thrust-to-Weight Ratio and Rail Exit Velocity Thrust-to-Weight Ratio is 9.34:1 Rail Exit Velocity is 71.5 ft/s
University of Central Florida
Mass Statement and Mass Margin
Open Rocket subscale mass prediction: 75oz (4.7lb) Actual subscale mass: 101 oz (6.3lb)
Mass increase of 26 oz (1.6lb)
Open Rocket fullscale mass prediction: 139 oz (8.7lb) Expected mass increase: 30oz (1.9lb) Expected total mass: 169 oz (10.6lb)
University of Central Florida
Recovery System
Drogue: 36” Main: 76” Payload: 28” Kevlar recovery harnesses Descent rates
Drogue before payload ejection: 41ft/s Drogue after payload ejection: 36ft/s Main descent rate: 17ft/s Ejected payload descent rate: 24ft/s Rail exit velocity: 71.5ft/s
University of Central Florida
Kinetic Energy Analysis
Kinetic energy determined from previously found velocities. Drogue before payload ejection: 276ft-lb Drogue after payload ejection: 169.6ft-lb Main kinetic energy : 37.9ft-lb Ejected payload kinetic energy : 212.4ft-lb Rail exit kinetic energy 841.8ft-lb
University of Central Florida
Predicted Drift
Calculated using constant acceleration assumption 5 mph: 675.277 ft 10 mph: 1350.5541 ft 15 mph: 2025.831 ft 20 mph: 2701.108 ft
University of Central Florida
Test Plans and Procedures
Ground Testing Simulations Actual Launch Outlined in CDR
University of Central Florida
Scale Model Flight Test
Subscale set to launch 1/17/2015 Faulty electronics prevented scheduled launch Launches can only happen in designated launch sites
with NAR and/or Tripoli members present
University of Central Florida
Tests of the Staged Recovery System Extensive Ground Testing Safety Full Scale Launch Tracking for all components
University of Central Florida
Final AGSE/ Payload Design Overview Dimensions of Rover
21” x 12” x 10”
Rocker-Bogie styled Suspension System Claw and Arm system Navigation using Computer Vision
University of Central Florida
AGSE/ Payload Integration
Rotating Claw on moving arm Mounted Camera Detect payload in claw
University of Central Florida
Interfaces
Webcams Servos Motors Arduino Motor/Servo Controllers Low Powered PC on mini ITX motherboard
University of Central Florida
Status of Requirements Verification
Power/Kill Switch Start Button to start program Will run all stages autonomously