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By: KSAT SLI Team

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Invited to teach a rocketry lesson to 5th graders at. Longs Creek Elementary School ... Test Plans and Procedures. Altimeter Testing ... – PowerPoint PPT presentation

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Title: By: KSAT SLI Team


1
K-SAT
  • By K-SAT SLI Team

SLi
2
  • The Krueger SLI team will launch a rocket a
    mile high and sample the ozone concentration at
    various altitudes during descent. Once the data
    is recovered it will be compared with ground
    level concentration.
  •  

3
Changes Since PDR
  • Vehicle Criteria
  • The total rocket length is now 78.8 inches
    instead of 83 inches
  • Changing the motor to a J135W
  • Payload Criteria
  • None
  • Activity Plan
  • We have started a new website. The address is
    http//www.neisd.net/ksat/SLI
  • Invited to teach a rocketry lesson to 5th graders
    at
  • Longs Creek Elementary School

4
Mark Twain Atmospheric Sounding Rocket Design
5
Rocket Flight Stability
Rocket Stability Margin CG Location is 43.85 in
CP Location is 65.55 in The Mark Twain Is over
stable by a margin of 4.93
6
Motor Selection Comparisons
7
Altitude RockSim Data
8
Acceleration RockSim Data
9
Velocity RockSim Data
10
Parachute Sizes and Descent Rates
  • Dual Deployment System
  • 32 in drogue parachute
  • 72 in main parachute
  • Velocity at Landing 20.9871 ft/s.

11
Launch Guide Data
  • Launch guide length 72.0000 in.
  • Velocity at launch guide departure 36.8940 ft/s
  • The launch guide was cleared at 0.335 Seconds
  • User specified minimum velocity for stable
    flight 43.9993 ft/s
  • Minimum velocity for stable flight reached at
    101.6004 in.

12
Test Plans and Procedures
  • Altimeter Testing
  • Reduce the air in the chamber until the altimeter
    reaches around 6000 ft.
  • Altimeter will fire the first charge.
  • Put back the air until the altimeter reaches 750
    ft.
  • The second charge will fire.
  • Recovery System Testing
  • Put the rocket together and strap down the
    payload section to a table or a
  • sawhorse.
  • The altimeter will still be in the vacuum chamber
    so we can test the
  • parachute recovery system.
  • The safe distance will be 10 ft. from the rocket.
  • The bottom of the rocket will separate from the
    payload section to its full
  • length of the shock cord.
  • Ozone data logger will turn on.
  • Main parachute will come out of the nose section
    to its full length.
  • All of this will be supervised by a certified
    level 3 NAR mentor.

13
Payload Assembly
14
Payload Design
Datalogger
15
Payload Integration
  • Payloads (control, scientific, and recovery) will
    be mounted on an assembly designed to slide in
    and out of the rocket airframe.
  • Assembly will be constructed of wood, fiberglass
    cloth, and Epoxy and consist of two cylindrical
    disks at the ends, with a 2-sided, flat mounting
    surface spanning the length between the ends.
  • Two cylindrical disks will be constructed such
    that they are snug with the inner diameter of the
    airframe to prevent movement during flight, but
    will still be able to be removed as a single unit
    when disassembling the rocket.
  • Payloads will be mounted to the flat surface
    using shock mounts to minimize the stresses
    transmitted to the payloads during lift-off and
    landing.
  • All electrical interconnects will be secured in a
    way to provide adequate stress relief while
    preventing inadvertent disconnects.
  • Air flow to the ozone sensor will be achieved by
    a drilling a small hole in the airframe.
  • The hole will also serve as the air pressure
    source for the altimeter.

16
Mark Twain Scale Model
17
Scale Model Time vs. Altitude
18
Scale Model Time vs. Acceleration
19
Scale Model Time vs. Thrust
20
Scale Model Time vs. Velocity
21
Safety
  • The Safety Officer for the K-SAT SLI team is
    Kirsten (KC) Casteel.

The Krueger SLI team follows all safety
precautions and directions provided in the MSDS
sheets for potentially hazardous material used
during rocket construction.
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