Heavy Lift Cargo Plane Proposal Presentation - PowerPoint PPT Presentation

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Heavy Lift Cargo Plane Proposal Presentation

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Heavy Lift Cargo Plane Proposal Presentation February 17th, 2005 Matthew Chin Aaron Dickerson Brett J. Ulrich Tzvee Wood Advisor: Prof. S. Thangam Coming Up... – PowerPoint PPT presentation

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Title: Heavy Lift Cargo Plane Proposal Presentation


1
Heavy Lift Cargo PlaneProposal Presentation
February 17th, 2005
Matthew Chin
Aaron Dickerson
Brett J. Ulrich
Tzvee Wood
Advisor Prof. S. Thangam
2
Coming Up...
  • Review previous work on the project
  • New, refined calculations
  • First steps for construction
  • Interior configurations
  • Wing
  • Tailboom
  • Project Scheduling Budget

3
Project Review
4
Project Objective Review
  • Design and build a remote controlled, heavy
    lift aircraft for competition
  • Society of Automotive Engineers Aero East Design,
    April 8th-10th, 2005
  • Regular Class Competition
  • Standard Engine OS 0.61X
  • Wing Span Limit 5 ft
  • No Planform Area Restriction
  • Maximum Take Off Distance 200ft
  • Maximum Landing Distance 400ft

5
Recap of Design VII
  • Performed calculations for the design of
  • Primary airfoil size
  • Takeoff and landing distances
  • Tailplane stabilator size
  • Selected airfoil/tail plane profiles
  • Airfoil Eppler 423
  • Stabilator NACA 0012

6
Recap of Design VII
  • Wing Design Material Selection
  • Balsa wood ribs
  • Lite plywood reinforcement
  • Carbon fiber support rods
  • Stabilator Design Material Selection
  • Entirely made of foam core
  • Solid piece simplifies construction

7
Recap of Design VII
  • Registered all 4 members and advisor for the
    April 8-10 competition
  • Examined previous construction problems
  • Evaluated methods to avoid experiencing similar
    occurrences during construction

8
Overcoming Fabrication Problems
  • Previous year utilized a high-lift Selig foil
  • Lifting condition relies on a very fine trailing
    edge
  • Poor construction of foil can severely hinder
    performance
  • Eppler 423 foil trailing edge is easier to
    construct
  • Landing gear Engine mount construction
    eliminated parts available commercially

9
Initial Parts Order
  • Varying sizes of balsa sheets, lite plywood
  • Carbon fiber rods
  • Dubro Treaded wheels
  • Ohio Superstar Cover Tugger
  • Top Flite Monokote Hot Sock Iron Cover
  • Sealing Iron/Hot Sock Combo
  • Top Flite Hot Glove Covering Tool
  • Top Flite Trim Seal Tool
  • Top Flite Monokote SmartCut Trim Tool
  • Top Flite Monokote Trim Solvent
  • Dubro Super Strength Landing Gear

10
Design Refinement Calculation
11
Calculation of Aileron Size
  • Calculation adapted from Perkinss Airplane
    Performance Control NACA TR 635
  • Non-dimensional parameter for lateral control
  • p rate of roll (rad/s)
  • b wing span (ft)
  • V true speed (ft/s)
  • Typical Values
  • Cargo/Bombardment 0.07
  • Fighters 0.09

12
Calculation of Aileron Size
  • Lower maneuverability coefficient required for
    this project
  • Smaller ailerons result in larger fixed wing
    surfaces
  • Will not be performing aerobatics, or performing
    military operations
  • Chose coefficient value of 0.035

13
Calculation of Aileron Size
  • Coefficient is used to calculate aileron size
  • Cld Change in Rolling Coefficient with aileron
    angle
  • t Aileron Effectiveness
  • da Elevator Deflection
  • Clp Damping Derivative
  • All coefficients are presented in graphical form
    in NACA report 635

14
Calculation of Aileron Size
  • Change in Rolling
  • Coefficient per
  • Degree divided by
  • Elevator
  • Effectiveness

Elevator Effectiveness vs. Aileron Chord/Wing
Chord Ratio
Damping Coefficient as a function of Aspect Ratio
15
Calculation of Aileron Size
16
Calculation of Aileron Size
  • EES software used for calculations
  • Two variables had to be solved for
  • Aileron Chord
  • Aileron Span
  • Parametric studies conducted with varying aileron
    span
  • Final Sizing
  • Chord 6.5 in, 27 of Wing Chord
  • Span 40 of Wing Semi-Span
  • Rules of thumb
  • Chord 15-30 of Wing Chord
  • Span 25-30 of Wing Semi-Span

17
Construction First Steps
18
Wing Construction
  • Use templates to cut balsa wood ribs
  • Use X-Acto knife or balsa cutter for
    manufacturing
  • Assemble one side of wing, then place on a 1.5
    angle for dihedral design

19
Wing Construction
  • Ailerons to be attached to third support spar
  • Aileron hinge placed at 5.418 inches from
    trailing edge (To be explained)
  • Lite plywood used for ribs in the central portion
    of the wing
  • Stronger fuselage attachment
  • Better overall wing stability

20
Rib Template
  • Wing Dimensions
  • Chord increased by 4 in. to 24 in.
  • More overall lift due to increased wing area
  • Increase in total lift greater than effect of
    addl weight
  • Allows a greater margin of error
  • Span 60 in.
  • Template made out of 1/8 in. Aluminum
  • Nine ribs per wing semi-span extending beyond
    fuselage
  • Holes placed at 4 inches and 12 inches from
    leading edge for carbon fiber support spar
  • Additional carbon fiber spar at 5.418 inches from
    trailing edge (used as pivot for ailerons)

21
Wing Interior Configuration
22
Tailboom Configuration
  • Balsa wood
  • I-Shape reinforcements
  • Allows for slight twist
  • Decreases shear stress
  • Plywood components still under consideration

23
Project Scheduling Budgeting
24
Gantt Chart
25
Gantt Chart
  • Ahead of schedule in our Design refinement
    section
  • Debugged primary EES file
  • Boom design selected
  • Behind by approximately 1 week on construction
    phase
  • Rib template for main airfoil received
  • Most of the ordered parts came in
  • Major construction to begin during week of 2/20
  • Engine mount and landing gear problems solved
  • SAE Report Submission due on March 1st is well
    underway

26
Budget
Spent () Anticipated ()
Hardware 431.62 400.00
Competition 350.00 TBD
Depends largely on the purchase of a new
remote Depends upon many variables such as
- Early reservations - Number of attendees -
Transportation expenses
27
To Be Continued...
  • Final Design
  • Report for SAE competition
  • Construction
  • Plans for testing

28
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