Preliminary Design Review PDR

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Preliminary Design Review(PDR)
NASA Student Launch Initiative
Northwest High School SLI Project Team

• Stress Effects of Rocket Launch and Recovery
• on Adult Stage Ladybugs

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S.L.I. Project / Team Overview

• Team Summary
• Northwest High School, Ft.Worth Texas
• Wayne Day, sponsor
• Thomas Tubbs, science advisor
• Launch Vehicle Summary
• Simple 4FN, 4in. Dia. approx 80in. Len.
• Mass Budget 4,110gm. empty
• Motor Selection Cesaroni J445 (prelim.)
• Dual recovery, PerfectFlite MaWD, 24 drogue, 60
  main
• Payload Summary
• Experiment Stresses from Rocket Launch and
  Recovery will have minimal effects on Adult
  Ladybugs on certain measurable attributes
• Three Control groups will be used to study
  effects on Flight Group.
• Group At-Home, normal, never travelled,
  not flown
• Group Travelled, normal, travelled but not
  confined or flown
• Group In-Capsule in flight capsule,
  travelled, but not flown
• Flight Group in capsule, travelled, flown
  recovered

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Summary of PDR report

• Overview of Changes to Team
• Team personnel, lost several members and added
  one new member
• Areas of responsibility, reassignments to cover
  and backup
• Changes to Launch Vehicle Design
• Estimated mass budgets assigned by section
• Initial Payload Integration
• Avionics / Electronics Specified
• Flight Computer PerfectFlite MaWD,
  Featherweight Raven
• Tracking System Garmin Astro 220
• Changes to Experiment / Payload
• New description, emphasis on measurable effects
• Control Groups and Environments
• Initial Flight Capsule Designs

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PDR Vehicle Overview

• Design Verification
• As seen in Rocksim length approx 80, dia. 4,
  empty mass lt 4,120g.

• Bluetube selected to provide strength without
  needing fiberglass to reinforce
• Over 4 caliber of stability with K445 loaded
• Thrust to weight ratio margin sufficient to
  provide 20 g at liftoff (approx. 12 to 10)

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PDR Vehicle Overview

• Recovery Subsystem
• Dual deployment recovery
• 24 drogue with 10 streamer at apogee
• 60 main deployed at 1,000 ft. AGL descending
• PerfectFlite MAWD selected as primary flight
  controller
• Featherweight RAVEN selected as backup, and
  primary vibration data recorder
• Independent battery feeds for each altimeter
• Separate ejection charges for each event fired by
  each altimeter
• Rocksim Performance Simulations
• K445 is current reference motor (first line
  below)
• K570 (or even K660) may be selected if mass
  budget gets out-of-control

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PDR Payload Overview

• New Experiment Name and Description
• Instead of just observation we will measure
  specific attributes to draw conclusions
• Remaining Lifespan of specimens, (estimated at
  30-60 days)
• Mobility of ladybugs (vs. normal and control
  groups)
• Appetite (measured by consumption of food)
• Hypothesis The G-force and vibration of a rocket
  launch will have significant effects on adult
  stage ladybugs
• Three Control Groups and the Flight Group
• At Home Group, Travelled, Travelled Confined
• Flight Group is travelled, confined AND flown
• Science Value
• The Space Shuttle has flown a ladybug experiment
  previously, but the forces at launch are much
  less on the shuttle than anticipated on our
  rocket.
• Our experiment also adds to the data of
  post-launch sustainability and viability of
  ladybugs, hopefully indicating ongoing beneficial
  capability.

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PDR Activities Plan

• Budget Plan
• Cost to Complete Estimate - 2,878
• Build Full Scale, and Half Scale Airframes
• Construct Flight Capsules and Control Habitats,
  obtain Ladybugs
• Launch Travel Expense Estimate
• not yet complete (about 3K to 5K)
• Fundraising Actions Ideas and Plans
• Red Wheel fundraising, Little Caesars Pizza
  sales, Chillis Restaurant night,
• Joint Sonic night with TARC teams
• Bake Sales at Dallas Area Rocket Society rocket
  launches and school sporting events
• Outreach / Educational Demonstrations
• Basic Model Rocketry Education Day
• at each of three middle schools in district
• Teach rocketry basics AND build to fly
• Scheduled for mid-February (schedule pending
  school coordinations)
• SLI Overview and Update

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PDR Vehicle Overview

• Mission, Design, Verification
• Recovery Subsystem
• Performance Predictions
• Payload Integration
• Launch Operation Procedures
• Safety and Environment

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PDR Payload Overview

• Experiment, Design, Verification
• Concept, Features, Definition
• Science Value
• Flight Operation Procedures
• Safety and Environment

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PDR Activities Plan

• Budget Plan
• Cost to Complete Estimate
• Launch Travel Expense Estimate
• Fundraising Actions
• Outreach / Educational Demonstrations
• Basic Model Rocketry
• SLI Overview and Update
• Timeline
• Construction Testing Launch Vehicle
• Acquisition of Facilities for Ladybug Handling
• Outreach Schedules

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