subsystem level design review. project review system level changes ◦ tail dragger ◦ airfoil...
TRANSCRIPT
![Page 1: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/1.jpg)
P16121: SAE Aero Aircraft Design & Build
Subsystem Level Design Review
![Page 2: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/2.jpg)
Project Review System Level Changes
◦ Tail Dragger◦ Airfoil Change and Discussion
Subsystem Selection◦ Fuselage Structure◦ Wing Material◦ Wing Construction◦ Landing Gear Selection◦ Tail Mounting
Aerodynamic Design, Sizing, and Static Stability◦ Aerodynamic Wing Design and Sizing◦ Horizontal Stabilizer Sizing and Longitudinal Static Stability◦ Vertical Stabilizer Sizing and Directional Static Stability ◦ Updated Take-off and landing◦ Testing Plan
Agenda
![Page 3: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/3.jpg)
RIT Aero Design Club has been absent from the SAE Aero competition (Regular Class) since 2008◦ Prior to 2008, RIT had been inconsistent in participating in the
competition annually
Lacking…◦ Experienced veterans to lead/guide the club◦ Aeronautical engineering experience/knowledge◦ Full commitment as students are on co-op for parts of the year◦ Funding
Current State
![Page 4: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/4.jpg)
Deliverables◦ A functional finished aircraft designed and built to SAE Aero standards◦ Comprehensive documentation of design, build, and testing methods and
processes
Jumpstart the Aero Club◦ Build competence through sharing experience from the present Senior Design
project◦ Desired State: Aero Design club is able to compete in the SAE Aero Competition
annually and be competitive
Desired State/Deliverables
![Page 5: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/5.jpg)
Progress and Time Keeping
![Page 6: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/6.jpg)
Objectives Targeted in this Phase
![Page 7: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/7.jpg)
Objectives targeted from functional decomposition◦ Aircraft must have enough lift to fly◦ Aircraft must be stable and controllable◦ Aircraft must survive landing
Other Design Targets this Phase
![Page 8: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/8.jpg)
Bill of Materials
![Page 9: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/9.jpg)
Donated Materials
![Page 10: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/10.jpg)
System Level Changes
![Page 11: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/11.jpg)
More desirable α for takeoff for S1223 airfoil Support of front landing gear more directly
supporting the payload bay Benefits for meeting our dimensional constraints Tail strike during landing now a designed for risk Challenges:
◦ Additional bending stress during takeoff and landing on the tail boom
◦ Propeller strike during landing now more serious risk◦ E423 airfoil less generous in acceptable range of α
Taildragger Configuration
![Page 12: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/12.jpg)
![Page 13: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/13.jpg)
![Page 14: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/14.jpg)
S1223 vs. E423
![Page 15: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/15.jpg)
A tale of two airfoils
S1223E423
Pro or Con Detail:
+ Higher Cl
+ Designed for low Re
+ Cruise α more forgiving for stall characteristics
- Cmac very high
- CD high
- Manufacturing challenges
Pro or Con Detail:+ Cmac lower
+ Easier to trim
+ Smaller tail allows for more lifting area
- Lower Cl
- Flight conditions outside of traditional flight regime
+ Thicker trailing edge is easier to manufacture
+ At a particular angle of attack E423 generates more lift and less drag
![Page 16: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/16.jpg)
Subsystem Selection
![Page 17: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/17.jpg)
Fuselage Truss
Platform
Keel
![Page 18: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/18.jpg)
Wing Material
Foam
Balsa
3D-Printed
![Page 19: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/19.jpg)
Wing SectionOne Piece
Two Piece
Two Piece w/ Wingbox
![Page 20: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/20.jpg)
Landing Gear
![Page 21: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/21.jpg)
Tail MountingBottom
Middle
Wingbox
![Page 22: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/22.jpg)
Feasibility and Analysis
![Page 23: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/23.jpg)
Testing: Reinforced Trailing Edge Thin trailing edge on
S1223 wing configurations has a high risk of snapping
3D printed trailing edges would increase strength without too much of a weight increase
![Page 24: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/24.jpg)
An estimate to get the order of magnitude for expected impact loading
We will want to design for impacts in the range of a thousand pounds
Landing Impact
![Page 25: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/25.jpg)
An estimate to get the order of magnitude for expected bolting strength in the fuselage
We should be able to design for considerable strength
Bolting Strength
![Page 26: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/26.jpg)
Aerodynamic Wing Design and Sizing: Parameter Selection
![Page 27: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/27.jpg)
Horizontal Stabilizer Design: Parameter Selection
![Page 28: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/28.jpg)
Longitudinal Static Stability Sizing Diagram
![Page 29: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/29.jpg)
Preliminary Fuselage Sizing Diagram:Static Stability and Internal Storage Requirements
![Page 30: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/30.jpg)
Horizontal Stabilizer Design: Overall Geometry
![Page 31: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/31.jpg)
Overall Aircraft Longitudinal Static Stability
![Page 32: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/32.jpg)
Vertical Stabilizer Design: Parameter Selection
![Page 33: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/33.jpg)
Vertical Stabilizer Design: Overall Geometry
![Page 34: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/34.jpg)
Overall Aircraft Directional Static Stability
![Page 35: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/35.jpg)
Updated Take-Off and Landing Performance
![Page 36: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/36.jpg)
Plan for continuing testing
![Page 37: Subsystem Level Design Review. Project Review System Level Changes ◦ Tail Dragger ◦ Airfoil Change and Discussion Subsystem Selection ◦ Fuselage](https://reader035.vdocuments.mx/reader035/viewer/2022062805/5697c0011a28abf838cc2a53/html5/thumbnails/37.jpg)
Questions?