2009

UNIVERSIDAD SIMÓN BOLÍVAR HUMAN POWERED SUBMARINE 2009 TECHNICAL PRESENTATION

HUMAN POWERED SUBMARINE TEAM 2009 Daniel Bigott (C) Maria Martinez Marcos Paz Zoriant Rodriguez Javier Marquez Cristobal Acuña Rene Knopfel Freddy Guerra Alessandro Dos Santos Rafael Nucete Danny Gomez Maria Molina FALTA FOTO EQUIPO

TEAM GOALS DESIGN PHILOSOPHY Create the HPS group in the University and recruit and organize the team Be the first Venezuelan Team to compete in the ISR Complete successfully one run Set records and establish parameters for further competitions DESIGN PHILOSOPHY The picua is designed to complete successfully one run at the ISR. Due is the first time that the university participate in this event, we build a conservative submarine in order to gain team experience and setting parameters and posible improvements for the new generation

HULL DESIGN Concieved in three parts (nose, body and tail) Originally with 11,48 feet long Designed for Caribbean Waters (density and viscosity) Speed design 6 knots Several computer analysis were carried out. 2-D XFOIL® 3-D CFX® Final Hull Parameters: Hull Parts mm in Length of nose 857 33,74 Length of body 1286 50,63 Length of tail Front diameter 800 31,5 Rear diameter End angle nose 8° Start angle tail Drag coefficient 0,011  

HULL FABRICATION BULKHEADS WITH PUTTY PRE - MOULD MOULD HULL WITH GATES AND HATCH

FINS DESIGN Developed under analysis of NACA profiles (4-digit and 4-digit modified) Software employed Design Foil R6 ® Analysis were performed with density and dynamic viscosity aprrox. 16° Generates turbulent flow at 67,6% from the length of the chord The profile selected has the lowest lift coefficient and moment equal to zero Also the lowest drag coefficient and force Final Profile Directional Fins NACA 0012-55 Stabilizer Fins Reduction chord length DIRECTIONAL FIN STABILIZER FIN

FINS FABRICATION FIN MACHINED ON ONE SIDE FIN WITH MOULD (COUPLING) MOULD MACHINED FIN MACHINED ON BOTH FACES

PROPELLER DESIGN A variable pitch system was designed to optimize the propulsion Drag force (129 N) and speed flow (6 knots) Propeller diameter was set to 31.5 in Hub diameter 4.12 in Two blades propeller Transmission ratio 1:1.6. Pedals speed 60 rpm From hub to shroud variations from the E193 airfoil were chosen Final Propeller material aluminum

PROPELLER FABRICATION Manufacturing process same as for the fin Complications working with stainless steel Final blades are from aluminum.

PROPULSION AND ERGONOMICS First stage Second stage Principal shaft Variable pitch shaft Crosspieces Bearings Aluminum cone Conic gears Flat gears

PROPULSION AND ERGONOMICS VARIABLE PITCH CONE AND SHAFT VARIABLE PITCH SYSTEM ALUMINUM CONE

PROPULSION AND ERGONOMICS PILOT POSITION IN THE HULL CHEST SUPPORT TEST BENCH

CONTROL SYSTEM AND STABILITY Choose a programmable control unit manage the actuation of the immersion and directional fins The control unit choosen is PIC16F877 SCHEMATIC DIAGRAM OF MICROCONTROLLER PIC16F877 ARQUITECTURE

CONTROL SYSTEM AND STABILITY The programmable control unit controls four motors that provide movement to the flaps Operation of the microcontroller is based on a pseudo-language For the joystick, the microcontroller will be in alert mode to any input signal PIC16F877 SERIAL PORT The mainboard has a serial port to facilitate the programming MAINBOARD 15

ELECTRONIC AND DIRECTIONAL SYSTEM The fins flaps are moved with a DC motor . Bunker ® series commonly employed for the windows elevation of the medium cars The activation depends on the signal from the joystick Sensors were incorporated inside the motors to capture its movement or rotation H bridge circuit was placed to avoid loss power H BRIDGE CIRCUIT INFRARED SENSOR GEAR MARKED SENSOR PLACED 16

CONTROL HOUSING AND JOYSTICK PSONE JOYSTICK FULL DIRECTIONAL SYSTEM CONTROL HOUSING The joystick transfer the rotation of the potentiometers into electronic information Each flap is moved under the action of 4 independent motor 17

SAFETY AND LIFE SUPPORT Emergency system designed is the dead-man mechanism Made of bicycle brake , reel, caliper and a buoy The stroboscopic light is the one used by the divers RELEASE MECHANISM OF SECURITY SYSTEM STROBOSCOPIC LIGHT 18

TESTING AND TRAINIG Trainig based basically in aerobics exercises Tested in a swimming pool 19

BUDGET Sponsorship via L.O.C.T.I. (Ley Organica de Ciencia y Tecnologia) and contribution ITEM DESCRIPTION NET. PRICE PRICE US$ 1 Test bench 272,00 126,512 2 Trailer for submarine 2.874,00 1.336,744 3 Divers and equipment 44.742,00 20.810,233 4 Tools 3.750,00 1.744,186 5 Hull 8.650,00 4.023,256 6 Transmission and propulsion system 4.070,00 1.893,023 7 Chest support 400,00 186,047 8 Transporting the submarine 9.000,00 4.186,047 9 Passages 38.700,00 18.000,000 10 Control systems and stability 1.250,00 581,395 TOTAL 113.708,00 52.887,442 20

VENEZUELA HPS TEAM 2009 This is the first time that students from Venezuela designed and developed a submarine for the ISR competition. Sponsorship, Shipment out of the country, Customs Service Exchange control and Visa were hard task that we had to figure out to be here. For the next submarine we will have this previous experience to improve our design. 21