Transcript PPT
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 TEAM GOALS -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 Length of nose Length of body Length of tail Front diameter Rear diameter End angle nose Start angle tail Drag coefficient mm 857 1286 857 800 800 8° 8° 0,011 in 33,74 50,63 33,74 31,5 31,5 HULL FABRICATION BULKHEADS WITH PUTTY PRE - MOULD HULL WITH GATES AND HATCH MOULD 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 DIRECTIONAL FIN NACA 0012-55 Reduction chord length STABILIZER FIN FINS FABRICATION MOULD MACHINED FIN MACHINED ON BOTH FACES FIN WITH MOULD (COUPLING) FIN MACHINED ON ONE SIDE 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 Aluminum cone Second stage First stage Principal shaft Flat gears Beari ngs Variable pitch shaft Crosspiec es Conic gears PROPULSION AND ERGONOMICS VARIABLE PITCH CONE AND SHAFT ALUMINUM CONE VARIABLE PITCH SYSTEM 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 •The mainboard has a serial port to facilitate the programming SERIAL PORT PIC16F87 7 MAINBOARD 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 CONTROL HOUSING AND JOYSTICK CONTROL HOUSING FULL DIRECTIONAL SYSTEM PSONE JOYSTICK •The joystick transfer the rotation of the potentiometers into electronic information •Each flap is moved under the action of 4 independent motor 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 TESTING AND TRAINIG •Trainig based basically in aerobics exercises •Tested in a swimming pool 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 1.250,00 581,395 113.708,00 52.887,442 TOTAL 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.