PRELIMINARY DESIGN REVIEW

NASA Student Launch 2014-2015

United States Naval Academy

PROJECT REPTAR

- Charter

- Introduction of Team

- Launch Vehicle

- Design

- Propulsion System

- Recovery System

- Payload Section

- AGSE

- Design

- Robotics

- Ignitor Insertion

- Sequence of Events

- Q&A Session

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Hayes Cole Alex Thor

Troy Richie Joe Andy

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Diameter: 5.0” Length: 103” Gross Lift-Off Weight: 27.7 lbs

All units in inches

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- Main Body: Carbon Fiber

- Avionics Sections: Fiberglass - Will avoid Faraday cage effects, and allow transmission of GPS signals and RF transmitter

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Materials

Material Factors Weighting

Factor Carbon Fiber Fiberglass

Low cost 3 -3 3

High availability 3 3 3

Compact rocket size 9 9 -9

Low weight 9 9 -9

Easy production 9 -9 -9

High tensile strength 1 1 1

High compressive strength 9 9 0

High stiffness 3 3 0

High heat resistance 3 3 3

High Young's modulus 3 3 0

Large motor selection 9 9 0

Totals 37 -17

Materials Quality Function Deployment System

- QFD Explanation

- Discussion of Decision Process

- Final Decisions

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- Build test pieces to ensure proper fabrication

- Compression Testing

- Side Force Loading

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CG CP

Center of Gravity: 55.6” from nose

Center of Pressure: 76.5” from nose Distance Between Pts : 21.1”

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Stability Margin & AOA vs. Time

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Selection: Cesaroni Tech K1200 - Reliable and consistent

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Avg/Max Thrust: 269.1 / 306.6 lbs

Lift-off Thrust / Exit Rail Velocity: 293.5/ 77.4 ft/s

Thrust to Weight Ratio: 10.60

Source: OpenRocket

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- All tests done at MDRA launch sites

- Will test both K1200 and I242 motors

- Objectives to confirm

- Thrust profile of each motor

- Proper firing of the ejection charge

- Up to 10% difference in thrust acceptable for K1200

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Ref: www.apogeerockets.com

Drogue: 24’ dia. Torrodial @ 3100’ AGL Main: 60” dia. Torrodial @ 1000’ AGL Payload: 60” dia. Torrodial @ 1000’ AGL Harness: 9/16” Tubular Nylon

- Advantages to Torrodial Chute

- High Drag - Packing Advantages

- Low Weight - Low Volume

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- Dual Stratologgers - Deployment and Scoring

- Three switches; Three LED’s

- 1 Power switch for each supply

- 1 Arming switch for black powder charge

Ref: www.perfectflite.com

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GPS Transmitter: Garmin T5 GPS Receiver: Garmin Astro 320 Handheld Receiver - Identical systems will be used for both main and payload sections upon payload jettison at main parachute deployment

Ref: www.garmin.com

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- All testing of black powder charges will take place under MDRA supervision on MDRA launch sites

- Electronic Match

- Will conduct full scale and subscale tests on ground

- Stratologger and GPS - Will conduct full scale and subscale tests both on ground

and in flight

1: Linear Stepper Motor 2: Payload in Bay 3: Servomotor for Payload Tab 4: Payload Bay Power Supply 5: Control Board and RF Receiver 6: Support Rods 7: Eyehooks 8: GPS Transmitter and Antenna

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- Test Goals

- Stability Margin

- Negligible Disturbances

- Test Procedure

- Yaw from -10° to 10°

- Test Model

- Nose Cone

- Body Section/Fins

- Sting Balance Integration

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- Scaled Rocket

- Payload

- Weight

- Motor

- Scale Model Goal

- Stability by Inspection

- Successful Launch

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- Components: • Vertical Tower • Scorbot ER-V • Rocket Elevation

Motor • Igniter Insertion

Device • Rocket Sled &

Launch Rail • System Control

Latptop

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ScorBot – ERV:

- Lifting Capacity: 2.2 lbs

- Degrees of Freedom: 3

- Programming Interface: MATLAB

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- Components: - Igniter - Igniter Housing - Linear Actuator

- 19” Igniter Insertion Distance

- Actuator Shielding Plate

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1. Scorbot will pick up the sample and insert the sample into the payload bay.

2. Payload bay will secure the payload and close.

3. Tower motor will elevate the rocket sled to the launch position.

4. Igniter insertion device will use a linear actuator to insert the igniter into the rocket motor bore.

5. Rocket ready for launch

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- All AGSE tests will be full scale - Scorbot will undergo independent payload insertion

testing with a dummy payload - Tower structure will initially undergo elevation testing

without added weight of the rocket - Igniter insertion device will be tested with a dummy

rocket motor - All three components will be tested together once

individual testing is complete 1. Payload insertion. 2. Rocket Erection. 3. Igniter insertion into dummy rocket motor.

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Question and Answer Session

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- K600 Motor Flight Profile

- K750 Motor Flight Profile

- Budget Overview

- Budget Itemized List (2)

- Schedule –Gantt Chart (4)

- Outreach

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Full Scale $7,383.06

Subscale $4,000.00

Testing and Development $1,500.00

Support $1,000.00

Travel $17,466.41

Outreach $500.00

Total $31,849.47

Expected Costs, 2014-2015

DARPA $40,000.00

USNA MSTEM* $5,000.00

Total $45,000.00

Navy Rockets SL Funding, 2014-2015

*Denotes a non-final i zed source.

- Have currently received a confirmed $40,000 from DARPA

- Expected $13,150 in excess

- Will allow Navy Rockets team to complete all success requirements if the projected totals are exceeded

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Subsystem Item Unit Price Count Total Price

Twill Weave Carbon Fiber Cloth $47.45 7 $332.15

Resin $99.73 1 $99.73

Hardener $46.06 1 $46.06

Fiberglass (10 oz E-glass) $6.95 5 $34.75

Garmin Astro Bundle (Astro 320 GPS receiver and T5 GPS Device) $599.99 1 $599.99

Garmin T5 GPS Device $249.99 1 $249.99

Fruity Chutes Iris Ultra 72" Parachute $201.36 1 $201.36

Fruity Chutes Iris Ultra 60" Parachute $166.92 1 $166.92

Fruity Chutes 24" Classic Elliptical Parachute $62.06 1 $62.06

Chute Protector, 18" $9.99 2 $19.98

Eyebolt $1.56 6 $9.36

Kevlar Cord $41.40 1 $41.40

Haydon Kerk Size 14 Linear Stepper Motor, Non-captive $123.11 1 $123.11

Hitec HS-422 Servo Motor $9.99 2 $19.98

Tenergy 6V 3300mAh NiMH Battery Pack $15.49 1 $15.49

Brackets $1.00 4 $4.00

3/8" x 48" Alumnium Rod $7.96 1 $7.96

MaxStream xBee Wireless Serial Modem $17.00 1 $17.00

Scorbot-ER V $2,500.00 1 $2,500.00

Chain Ring $15.00 6 $90.00

56' of Bike Chain $280.00 1 $280.00

Hitch Pins $7.25 8 $58.00

Ring Pins $2.69 20 $53.80

NPC T74 Electric Motor $355.00 1 $355.00

RoboteQ HDC2450 Motor Controller $645.00 1 $645.00

Lenovo ThinkPad X140e $429.00 1 $429.00

Steel and Aluminum Tubing $450.00 1 $450.00

Steel Plating $112.50 1 $112.50

1/4 Inch OD Steel Tubing $15.84 1 $15.84

Firgelli Automations 24" Stroke 35 Lbs Linear Actuator $119.99 1 $119.99

K1200 54mm Motor $137.95 1 $137.95

54mm Motor Casing $84.69 1 $84.69

$7,383.06Total

Full Scale Itemized Budget

Rocket Structure

Avionics and Recovery

Payload Bay

AGSE

Propulsion

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Subsystem Item Unit Price Count Total Price

Twill Weave Carbon Fiber Cloth $47.45 7 $332.15

Resin $99.73 1 $99.73

Hardener $46.06 1 $46.06

Fiberglass (10 oz E-glass) $6.95 5 $34.75

Garmin Astro Bundle (Astro 320 GPS receiver and T5 GPS Device) $599.99 1 $599.99

Garmin T5 GPS Device $249.99 1 $249.99

Fruity Chutes Iris Ultra 72" Parachute $201.36 1 $201.36

Fruity Chutes Iris Ultra 60" Parachute $166.92 1 $166.92

Fruity Chutes 24" Classic Elliptical Parachute $62.06 1 $62.06

Chute Protector, 18" $9.99 2 $19.98

Eyebolt $1.56 6 $9.36

Kevlar Cord $41.40 1 $41.40

Haydon Kerk Size 14 Linear Stepper Motor, Non-captive $123.11 1 $123.11

Hitec HS-422 Servo Motor $9.99 2 $19.98

Tenergy 6V 3300mAh NiMH Battery Pack $15.49 1 $15.49

Brackets $1.00 4 $4.00

3/8" x 48" Alumnium Rod $7.96 1 $7.96

MaxStream xBee Wireless Serial Modem $17.00 1 $17.00

Scorbot-ER V $2,500.00 1 $2,500.00

Chain Ring $15.00 6 $90.00

56' of Bike Chain $280.00 1 $280.00

Hitch Pins $7.25 8 $58.00

Ring Pins $2.69 20 $53.80

NPC T74 Electric Motor $355.00 1 $355.00

RoboteQ HDC2450 Motor Controller $645.00 1 $645.00

Lenovo ThinkPad X140e $429.00 1 $429.00

Steel and Aluminum Tubing $450.00 1 $450.00

Steel Plating $112.50 1 $112.50

1/4 Inch OD Steel Tubing $15.84 1 $15.84

Firgelli Automations 24" Stroke 35 Lbs Linear Actuator $119.99 1 $119.99

K1200 54mm Motor $137.95 1 $137.95

54mm Motor Casing $84.69 1 $84.69

$7,383.06Total

Full Scale Itemized Budget

Rocket Structure

Avionics and Recovery

Payload Bay

AGSE

Propulsion

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Plan Actual % Complete Actual (beyond plan) % Complete (beyond plan)

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MESA Day:

- Working Bottle Rocket related activities with local Baltimore

elementary school children at the Advanced Propulsion Lab

Mini-Stem:

- Conducting Science and Engineering related activities with USNA

candidates during Candidate Visitation Weekends

Girls-Only Stem Day:

- Encouraging female STEM academic participation through

competition and activities

USNA Boy Scout Jamboree

- Team members will teach the Space Exploration Merit Badge

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