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Exterior Structure Design Alternatives

Exterior Structure Design Alternatives. Cornell CUAV: Twin hull on aluminum frame design. MIT Orca 4: Dual side thrusters. Colorado HydroBuff R5L: Front dive planes and aft rudder. Florida Atlantic Squid: Vector thrust control. Hydrodynamics Mechanical Design. Myring Hull Contour

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Exterior Structure Design Alternatives

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  1. Exterior Structure Design Alternatives Cornell CUAV: Twin hull on aluminum frame design MIT Orca 4: Dual side thrusters Colorado HydroBuff R5L: Front dive planes and aft rudder Florida Atlantic Squid: Vector thrust control

  2. Hydrodynamics Mechanical Design • Myring Hull Contour • Design developed by U.S. Navy to minimize drag for submersible objects. • Divides into 3 compartments: Nosecone, mid-section and tailpiece • Dimensions • Nose Cone Length: 6 inches • Mid Section Length: 24 inches • Tailpiece Length: 12 inches • Mid Section Thickness: 1/8 in. • Maximum Outer Diameter: 6 inches • Material Selection • Nose Cone: PVC • Mid Section: Aluminum 6061 • Tailpiece: Aluminum 6061 • Control Surface Configuration • 4 NACA 0012 airfoils mounted to the front of the tailpiece Total Drag computed to be 16.1 N at 5 knots (with antenna deployed at 6 in.)

  3. Control Surface Sealing Design • Must withstand pressure of 45.0 psi • Dynamic Seals • American Variseal W10-MS-R-010-W-Z80 Rod Seal • Low Friction Servo Movement • Spring Loaded Rotary Shaft Seals • Dimensions • 0.375 in.Housing Groove Diameter • 0.99 in. Gland length • Seal pressed in housing groove in tailsection • Servo used for electronic control of control surfaces • 1/4 in. diameter stainless steel shaft passes from servo to control surface • Aluminum coupler and set screws used to attach servo to shaft • Pins used to attach shaft to control surface Control Surface Sealing Design Rotary seal schematic as provided by American Veriseal

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