1. Sultan Qaboos University College of Engineering

2. OUR TEAM 4 th team working on the submarine 1 st team: 3 members Hull Design and general setup of the Submarine 2 st team: 3 members MAIN FRAME 3 nd team: 4 members Mechanical Components 4 rd team: Mechanical component, fixing, and testing

3. Members 5 members Senior Mechanical Engineering Students: Members: Haifa Al-Salmi Hamed Al-Amri Hussein Al-Rashdi Ishaq Al-Hassani(Rider) Khaleel Al-Riyami Khalid Al-Sawwafi (leader) Supervisors: Dr.Jamil Abdo Dr.Nabeel Al-Rawahi

4. Goals Team: To be the first team from the Arabic world to participate in the ISR Try our best to achieve one of the top places in the race, and if not the benefit from the experience as a whole is a prize itself Gain valuable team building experience Having Fun Submarine: Create an innovative submarine Design with high priority for the safety of the pilot To achieve maximum speed by using an optimized hull form and reducing pilot workload,we are aiming for a speed of 8 knots (approx 4m/s) To design a control system which will provide the maximum and smoothest control possible

5. Sultanah SULTANA was the first ship from the Sultanate of Oman to visit the New World In 1839 Sayyid Sai’d bin Sultan ruler of Oman ordered his ship the SULTANA to set sail for America on a trade mission. Started its journey on February 1840 and arrived on 30 April 1840 to New York. The voyage was not a commercial success but its marks the point of successful friendly relations between the two countries that continue to this day.

6. Overview Elliptical shaped hull Window at front 4 fins with Alerions 2 bladed propeller Weight: 105kg Diameter = 0.760 ± 0.002 m Length = 3.300 ± 0.03 m D L

7. Gain valuable team building experience Split the tasks and make each person in charge of a task And making sure that everyone in the team understands what's going on Conducting many brain storming sessions Learning from previous designs

9. An elliptical shape was selected, then modifications have been carried in order to reduce the drag force further. Using one of the best standards “ National Advisory Committee for Aeronautics” NACA shapes. > NACA shapes divided into different groups, each one called series. 6-series in NACA shape found to be the most appropriate for our situation in designing the submarine. First a sketch of the desired shape was generated using “Design Foil” software. Then Microsoft math was used to come up with 2-D ‘cross section’ drawing for the submarine. Finally, inventor was used to generate the 3-D model of the hull. Sultanah’s hull

10. Fiberglass Seamless construction High strength and great durability Minimum maintenance Freedom from corrosion and rust. Lower price Material selection for the hull

11. Sultanah’s hull >> Hull was fabricated using the process of molding:

12. Propulsion system Pedal and chain Gearbox Main Shaft propeller

13. Pedaling system and chain

14. Spiral Bevel Gears Ratio: 3:1 Weight: 2 Kg Combined Chain and Gearbox provides a ratio of 6:1. Gearbox

15. Shaft 3 dimensions for the aluminum shafts were selected and compared 20mm Aluminum solid shaft(max stress=329,574) 20mm outer diameter 15mm inner diameter aluminum hollow shaft (max stress=365,199) 20mm outer diameter 18inner diameter aluminum hollow shaft(max stress=832,750) All the shafts are 780mm in length Yield strength Al=414Mpa 15-20H was chosen since the results are very close to the solid shaft but the weight is much more less.

16. Propeller Two-bladed configuration Professional software, JAVAProp, was used to design the propeller. The program inputs are the targets for designing the propeller which are velocity, RPM, and power. velocity = 4.12 m/s RPM = 300 Power = 294 w The outputs are efficiency, thrust and pitch. We tried different blade angle for the same angle of attack. The highest efficiency, 86%, and thrust, 272.5 N,

17. Control(Steering system) The main function is to move submarine in the up, and down, left, and right directions. The material used for the steering system is Aluminum. The system is controlled by cables

18. Control(Steering system) Manual Steering by cables: Advantages: – Easy to connect – Easy to maintain – Low cost Disadvantages: – Needs high energy to overcome friction – Needs to be maintained more regularly – Slightly slow response After taking into consideration all the advantages and the disadvantages the manual steering system was chosen over the hydraulic system.

19. Control

20. Life Support System Aluminum 80 SCUBA tank Tank allows more than 2/3 leftover air volume at the end of one run Spare air bottle, attached to the riders weight belt.

21. Safety Submarine Safety Markings – Hatches – Control Surfaces – Control Surface Guard – Propeller Strobe Light – Visible 360° Emergency Buoy – Alerts crew to injured pilot

22. Design door locks

23. Strobe Light & Mechanism of Emergency Buoy

24. Testing and Training (Training) 5 days of training to get the “Open water diving license” At a diving school located in Sidab(Diving knight) In addition to diving,fitness training’s were regularly done by the crew members

25. Journal and Budget #ItemCost(Omani Rial)Cost(US Dollars)Notes 1 Construction of the submarine Hull3,5009,117 2Other Submarine material4,00010,419 3 Diving lessons and certificates6001,563 4Diving equipment's4,10010,680 For 5 students 5Miscellaneous100260 TOTAL13,20034,385

26. Sponsorship 3 Sponsors: Qalhat LNG SAOC DryDocks Oman STRABAG Oman L.L.C

27. Conclusion We built the first submarine from Asia Hull is made from fiber glass It is a one man propulsion system Proplusion system made of pedals, chain, gearbox, shaft, and finally propeller Manual steering system