Critical Design Review AAE490 Project 1 March 2003 Nicholas Baker Brian Chernish Andrew Faust Doug Holden Mara Prentkowski Nicholas Setar

AAE Overview Design Requirements Last Semester’s Design Walk around Landing Gear Fuselage Wing Horizontal Tail Vertical Tail Avionics Pod Engine Radio Instillation Color Scheme

AAE Design Requirements & Objectives Maximum weight < 55 lbs Cruise speed > 50 ft/sec Stall speed < 30 ft/sec Climb angle > 5.5° Operating ceiling > 1000 ft Flight time > 30 minutes Payload of 20 lbs in 14”x6”x20” pod Carry pitot-static boom Spending limit < $300 T.O. distance < 106 ft (~60% of McAllister Park runway length) Rough field capabilities Detachable wing Easy construction

AAE Aircraft Walk Around Low wing – Clark Y Tricycle Gear T-Tail – NACA 0012 Pusher Wing Span = 14.4 ft Wing Chord = 2.9 ft A/C Length = 10 ft Internal Pod

AAE Walk Around

AAE Landing Gear Nose Gear –Mounting Hardware Main Gear –Mounting Hardware

AAE Nose Gear Fults Tooling Dual Strut (RF800) Mount: 1/4” plywood bulkhead Weight: 9 oz Cost: $33.94 Servo Actuated for steering

AAE Main Gear Carden Edge % CE54040 Mount: 1/4” Plywood Weight: 23 oz Cost: $89.95

AAE Fuselage Size Materials/Construction Articles that Mount to Fuselage

AAE Fuselage Outer Fuselage –1/8” Plywood Formers –1/4” x 1/4” Balsa Stringers –3/32” Balsa Sheeting 4-6 lbs/ft 3 Contest grade Keel –1/8” Plywood Formers –1/2” x 1/2” Basswood Stringers –1/4” x 1/4” Balsa Truss –3/32” Balsa Sheeting 4-6 lbs/ft 3 Contest grade

AAE Fuselage Things that attach to the keel –Nose Gear –Main Gear –Wing –Horizontal/Vertical Tail –Engine Nacelle –Nose Cone

AAE Fuselage Nose Cone Attachment/Removal

AAE Wing Size Materials/Construction Wing Mounting

AAE Wing Size –The wing was sized to the following constraint Where; W = 53 lbs Vmin = 30 ft/sec CL = 1.19 r = slug/ft 3 S = 41.7 ft 2

AAE Wing Materials –1/8” Balsa Ribs –1/8” Plywood Root Rib –1/2” x 1/2” Spruce Spare (2) with 1/8 balsa shear web –Leading and Trailing edge stock –Aluminum Main Spar 2024 T3 –3/32” Balsa Sheeting 4-6 lbs/ft 3 contest grade

AAE Wing Mounting Wing is Plug in style –Main Spar stays in plane –Wings Panels removable for ease of transportation and maintenance –2 Anti-rotation bolts keep wing attached

AAE Wing Aluminum Wing Spar 2024 T3 Aluminum Tube –1.75” Diameter –.049” thickness –46” Length –5 degree dihedral angle To get proper location of wing

AAE Horizontal Tail Size Materials/Construction Horizontal Tail Mounting

AAE Horizontal Tail Size Assume cg is locate at the quarter chord Assume η h = 0.9 AR wing = 5 S wing = 41.7 ft 2 AR h-tail = 3 Find: S h and AR => b h and c h

AAE Horizontal Tail x c/4 = 0 ft ≈ x cg Static Margin = 15% SM = (x ac – x cg )/c Solve for x ac x ac = ft

AAE Horizontal Tail Roskam Eq Raymer Fig Roskam Figure 3.3

AAE Horizontal Tail Results S h = 8.5 ft 2 b h = ft c h = ft

AAE Horizontal Tail Materials 1/8” Balsa Ribs 1/8” Plywood Root Rib 3/4” x 3/8” Bass Spar (2) Machined Ribs, Trailing Edge, and Leading Edge 1/16” Sheeting on Leading Edge and Center Section

AAE Rocker

AAE Vertical Tail Size Materials/Construction Vertical Tail Mounting

AAE Vertical Tail l V = 5.47 ft S wing = 41.8 ft 2 b wing = 14.4 ft V V = 0.031

AAE Vertical Tail TR = 1.5 Sweep Angle = o

AAE Vertical Tail Construction 1/2” x 1/2” Bass Center Spar 1/2” x 1/4” Bass Front Spar 1/4” Balsa Vertical Webs 1/8” Balsa Ribs Balsa Leading Edge and Trailing Edge

AAE Avionics Pod Air Data Boom Attachment Pod Attachment Camera

AAE Avionics Pod Air Data Boom Placement –On the Fuselage for Protection –In Front of the Plane for Accurate Data Collection –Near the Pod for Easy Integration –Camera Placement

AAE Avionics Pod Pod Construction –Pod Dimensions 14” X 11” X 20” –1/8” Plywood Base –Balsa Sides Similar to Fuselage Construction

AAE Avionics Pod Pod Attachment –Variable placement for CG adjustment –Vibration isolated for clearer pictures and electronics protection –Easily mounted with six bolts at the top of the Pod

AAE Avionics Pod Camera Placement – Mounted just above the Keel –30° look down angle when level allowing for an in flight banking look down angle of 45°

AAE Engine Engine Mount Engine Mount Pylon Additional Hardware Propeller Selection

AAE Engine DA-50-R –5 Hp –3.13 lbs –Length 6.7” –Bore ” –Stroke ” –Clockwise Rotation

AAE Engine Engine Mount –¼” Plywood Firewall 3” X 4” –Standoff Mounts Shown in Blue

AAE Engine Engine Mount Pylon –1/2” square Bass Wood stringers –Balsa Ribs –4” X 3” plywood mounting plate –14” tall providing 12.5” of prop clearance

AAE Engine 50 oz Dubro Fuel Tank Fuel Delivery –Fuel tank located at CG –Fuel line run through pylon to the engine –Vacuum created by engine stroke draws fuel Good for up to 30 feet

AAE Engine Additional Required Hardware –Throttle Servo –Ignition Battery –Ignition Switch

AAE Engine Propeller Choices –Manufacturers Bolly Menz Mejzlik –Sizes 24” X 8” 22” X 10” 23” X 10”

AAE Aircraft Maintainability Service Hatches –Top Hatch –Servo Access Hatches Exposed Engine for Ease of Maintenance

AAE Radio Instillation

AAE Color Scheme

AAE APPENDIX Parts Drawings Single Receiver Instillation Material List

AAE Single Receiver

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