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Virginia Science Olympiad:

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Title: Virginia Science Olympiad:


1
Virginia Science Olympiad BUILDING EVENTS DIV B
2
Div B Building Events
  • Wright Stuff
  • Elevated Bridge
  • Battery Buggy
  • Trajectory
  • Junkyard Challenge

3
BASICS TO REMEMBER
  • Each device should be clearly labeled with the
    team name and number
  • All devices, except Wright Stuff, must be
    impounded
  • Any student on the team may help build the device
    (new)
  • ONLY COMPETITORS are allowed inside the
    competition area

4
BASICS TO REMEMBER
  • Most importantly READ AND FOLLOW THE RULES!
  • Most of these events have tier scoring and
    students will be moved to the 2nd (or 3rd or 4th)
    tier for not following specifications

5
NEW SAFETY REGULATIONS
  • Under each event description there is now a
    section for eye protection followed by a number
  • Descriptions of what these numbers refer to
    appear on the www.soinc.org under events
  • For most events the regular lab goggles with
    indirect vents will work (4, ANSI Z87)
  • For events with projectiles Junkyard and
    Trajectory, 5 or high impact goggles/spectacles
    must be worn that is they must be rated ANSI
    Z87

6
Wright Stuff
Students construct a monoplane to achieve maximum
flight time
7
Wright Stuff
  • Students can bring 2 planes for testing
  • Total mass of the plane must be 7.0 g or more
    (without rubber motor)
  • The rubber motor cannot exceed 1.5 g

8
Wright Stuff
  • The horizontal maximum wing span is 40.0 cm
  • The horizontal maximum stabilizer span is 28.0 cm
  • The propeller must be a commercially made, 2
    blade propeller with maximum diameter of 20.0 cm

9
Wright Stuff Scoring
  • The scoring is determined by time the plane is in
    the air the longest flight wins
  • New bonus points are awarded if the chord length
    is less than 7.0 cm or less than 6.0 cm
  • A flight log is required teams lose flight time
    if no log or an incomplete log is submitted

10
Wright Stuff Design
  • Buy a kit and modify to meet specs
    http//www.freedomflightmodels.com/ has a good
    one 2 per kit
  • Buy rubber you can cut yourself and a winder, you
    may even want rubber lube http//www.indoormodels
    upply.com/default.htm
  • Get large plastic bins to keep everything in

11
Wright Stuff Design
  • Take kit plans, cover with wax paper, pin on foam
    board and then put packaging tape over the wax
    paper to seal to the board the design pattern
    can be reused and the balsa wood and glue wont
    stick to the pattern or board.
  • Mylar is tricky to cut and rips easily use a
    soldering iron to melt away excess

12
Elevated Bridge
  • Students design a bridge with best efficiency
  • up to 15 kg of mass will be tested

13
Elevated Bridge - basics
14
Elevated Bridge - basics
15
Elevated Bridge - basics
  • Important measurements
  • Must span 35-40 cm
  • Must clear 15x15 cm in center
  • Max height of 20 cm

16
Elevated Bridge - basics
  • Other things to note
  • No maximum wood size
  • Must be wood (no bamboo, laminates, etc.)
  • Must support 5x5x2 cm block on top mid-span
  • Must be impounded

17
Elevated Bridge - scoring
  • The score is pure efficiency
  • Efficiency mass held
    bridge mass
  • Bridges that dont meet specs are tested but
    moved to tier 2
  • Bridges that are untestable are in tier 3 and
    ranked by mass

18
Elevated Bridge - tips
  • Balsa has best weight to strength ratio order
    online for better pieces (http//www.modernss.com/
    has good balsa, cutters, etc.)
  • Glue adds the most weight use sparingly
  • Have students draw plans, cover with clear
    packing tape and work on top of plan
  • Build 2 identical sides, then connect
  • Keep everything symmetrical, level, square

19
Battery Buggy
Teams will construct a vehicle that uses
electrical energy as its sole means of
propulsion, quickly travels a specified distance,
and stops as close as possible to the center of
the finish line.
20
Battery Buggy - basics
  • The vehicle may use no more than 4 individual
    cells (labeled 1.5 volts or less each) or a
    single battery pack (labeled 4.8 volts or less)
    on the vehicle at once
  • No more than 4 additional cells or one additional
    battery pack may be impounded for replacement
    purposes.
  • Only energy stored in these batteries may be used
    to propel the vehicle.

21
Battery Buggy - basics
  • The vehicles wheel base must be between 24.0 cm
    and 28.0 cm. The wheel base is the distance
    between the center of rotation of the front and
    rear axles.
  • The vehicles track width may not exceed 19.0 cm.
    The track width is the distance between the
    outermost left side and the outermost right side
    of the
  • widest part of a track that would be left in or
    on a surface by the vehicles tires

22
Battery Buggy - basics
  • only the wheels may contact the track
  • The vehicle must have a fixed, pointed object
    extending forward of all other parts of the
    vehicle including the wheels and to within 1 cm
    of the track's surface.
  • sighting devices that do not use electricity are
    permitted

23
2010 BATTERY BUGGY THE VEHICLE
Batteries
MOTOR
Track Widthlt 19.0 cm
  • Fixed Point
  • Forward of all other parts
  • lt 1.0 cm above track surface

Wheel Base24.0 28.0 cm
Batteries
Four 1.5V batteries -OR- One 4.8V battery
pack
lt 1.0 cm
Track Surface
24
Battery Buggy the track
Regional Increments 50 cm State Increments 10
cm National Increments 1 cm
25
Battery Buggy - basics
  • students may start the device anywhere along the
    start line with the fixed point directly above it
    (there is a center line bonus if the center tape
    remains within the vehicles track)
  • the vehicle must start by the touch of a pencil,
    pen, dowel, etc. it may not be touched in any
    other way during a run
  • as soon as the vehicle moves it is considered a
    run
  • students have 10 minutes to set up and run 2
    trials
  • students may not follow the vehicle down the
    track

26
Battery Buggy - scoring
  • lowest score wins
  • score time score distance score center
    line bonus (-20 points)
  • the best score of the two trials is used

27
Battery Buggy - scoring
  • Time Score
  • The Time Score is 20X the Official Run Time
    (measured in seconds to the hundredth of a
    second) for the vehicle to move from the Starting
    Line to a complete stop.
  • Example Vehicles Run Time is 7.89 seconds.
  • 7.89 seconds 20 157.8 points

28
Battery Buggy - scoring
  • Distance Score
  • The Distance Score shall be the distance from the
    tip of the fixed point to the point at the center
    of the Target Line recorded in millimeters.
  • Example Vehicle stops 1234 mm from Target.
  • 1234 mm 1234 points

29
Battery Buggy scoring
  • Determination of TIERS
  • Tier 1 Any runs with no violations.
  • Tier 2 Any runs with run violations.
  • Tier 3 Any runs with construction violations or
    both run and construction violations.

30
Trajectory
  • Design calibrate a catapult
  • Data Collection
  • Data Analysis

31
Trajectory - basics
  • the entire device must fit within a 70 cm cube
    prior to testing
  • the launching force must be supplied by a
    non-metallic elastic solids
  • teams provide their own projectiles (a list of
    acceptable projectiles are in the rules)
  • device graphs projectiles anything needed
    to perform a launch must be impounded

32
Trajectory - basics
  • the launch area is 1 m wide x 1.5 m long the
    device can be placed anywhere inside the launch
    area
  • the device must be triggered from outside the
    launch area students may not touch the device
    or enter the launch area during a trial
  • the device must stay within the launch area
    prior to and immediately after the launch

33
Trajectory - tips
  • students should build early and test, test, test
  • different projectiles need to be tested,
    different distances, and graphs need to be made
  • consistency is key the device needs to be
    lined up the same way every time
  • some elastic solids lose elasticity over time
    beware that replacement material might test
    different than the original

34
Trajectory - targets
  • students have 10 mins. to make 2 launches at
    each of 2 targets
  • targets will be set between 2 m and 8 m (at 1 m
    intervals for regionals, .5 m intervals at
    states) with at least 2 m between them and the
    nearest target will be placed up to 1 m off the
    floor (in 1 cm increments)
  • students must announce which target they are
    aiming for before launch

35
Trajectory bucket shot (new)
  • after a first shot at a target, if the shot hits
    the target students may request a bucket shot
    as their second shot
  • getting the projectile in the bucket has a big
    reward up to 100 deduction points
  • however, a bucket shot means no 2nd shot for the
    original target, and if the scoring comes down to
    3rd and 4th tiebreakers, teams with a bucket shot
    are ranked below the others

36
Trajectory scoring
Lowest score wins Score Lower Close Target
Area Score Lower Far Target Area Score Graph
Score Penalties Bucket Shot Deductions
37
Trajectory scoring
Target scores are basically the distance between
center of target and where the projectile
actually hits in mm
38
Trajectory scoring
  • The graph score is easy to get if students just
    FOLLOW DIRECTIONS!
  • There should be 4 graphs.
  • Each graph-table pair must be on a separate
    sheet of paper and on the same side of the paper.
  • Graphs and tables must be properly labeled.
  • All variables and units must be identified.
  • Each page must have the team name.

39
Junkyard Challenge
  • Build a device to sequentially trigger four
    mousetraps in under 60 seconds

40
Junkyard Challenge - basics
  • Must start by dropping a golf ball into the
    center point of the device
  • Must trigger four mouse traps sequentially
  • The center point of the device must be clearly
    marked
  • Mouse traps and golf ball must remain unmodified
  • An unmodified mouse trap must keep all its
    working parts
  • May glue or screw a mouse trap to a base

41
Junkyard Challenge - basics
  • All materials and tools needed to build the
    device must fit in a 40.0 cm x 40.0 cm x 60.0 cm
    when closed (lid must be on)
  • Students have 30 minutes to set up the device on
    site, with no outside help or communication

42
Junkyard Challenge in the box
  • Must have four snap trap type mouse traps, one
    unmodified golf ball
  • Everything else you will need to assemble your
    device must fit in your box
  • Materials
  • Tools
  • Fasteners, tape, etc

43
Junkyard Challenge - tips
  • Pre-make the device, and then take it apart in
    pieces to fit in the box
  • Practice setting up and calibrating device out of
    box
  • No gluing is permitted on site, but parts may be
    pre-glued
  • Bring LOTS of extra tape!

44
Junkyard Challenge - scoring
  • Highest score wins
  • There are lots of points and lots of penalties in
    this event read the rules!
  • Ties will be broken as follows 1. Fewest penalty
    points 2. Longest time of operation up to 60
    seconds.

45
Junkyard Challenge - tips
  • Read the rules sentence by sentence
  • Transcribe each individual rule into an outline
    of testable statements rule is either met or
    not met
  • Ex Box is less than 60cm long yes/no
  • Group rules by type
  • Construction, competition, penalties, etc
  • Use this list as a checklist to ensure your
    device complies with ALL rules
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