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SBS STINGRAY Mk.II Jet Boat (LEGACY)

SeaBoss Systems (SBS) STINGRAY Mk.II Jet Boat (LEGACY)

*LEGACY - No new updates planned

REPLACED BY: https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=1949379504

An update of the Mk.I which replaces the propellers with the new Fluid Jet Propulsion Drives.

Twin Jet Turbine Speed Boat using Fluid Jet Propulsion. Deployable underwater Control Planes provide downward pressure to ensure the boat stays in the water. The Fluid Jets Elevation (UP/DOWN) have been slaved together and are under control of a PID tied to a Tilt Sensor which measures the pitch of the boat. It will automatically adjust the Fluid Jet Elevation in an attempt to keep the boat level front to back. There are Two Jet Turbine Engines. One Jet powers the outer jets while the other the inner fluid jets. Therefore it is technically possible to run on one engine only as the engine power will still be equally split up the centre line of the ship.

Small Electric Drive Motors are also available for slow speed maneuvering (parking and taxing) and reversing. Primary power is provided by the two Jet Turbines.

Jet Vectored Turning also available via a button accessible to the pilot. At slow speed you can almost turn on the spot. Be carefull when engaging at high speeds.

Two Custom Tanks located in front mandibles (+5k capacity Jet Fuel per side, lots of fuel).

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CONTROLS

THROTTLES
- Port Jet Combustion RPS Requested Throttle (0 to 180)
- SB Jet Combustion RPS Requested Throttle (0 to 180)
- Jet Drive Clutch Pressure (0 to 1)
- Electric Drive Throttle (-0.4 to 1)

PILOT'S SEAT
W/S - Adjust Control Plane Angle. The Control Plane Setting will display on a Numbers Readout Display in the Pilot's view on the left. Tied to PID that controls the side control vanes in order to keep the vessel level. Best to keep close to 0.000.
A/D - Steering LEFT/RIGHT
1 - Increase Combustion RPS Throttle for Port and SB Jet Engines simultaneously
2 - Decrease Combustion RPS Throttle for Port and SB Jet Engines simultaneously
3 - Increase Jet Drive Propeller Clutch Pressure
4 - Decrease Jet Drive Propeller Clutch Pressure
5 - Engage Autopilot (Steering only, there are no throttle controls for Autopilot)
6 - Change Gears (next gear ratio is 1:2, I use the next gear for slowing down when approach the destination. It's a quick way to transition from High Speed to Taxing and Parking (Local). After you go Local you can then have more time to adjust which may include shutting down the jets completely and going to Electric Drive which allows for reverse.



Autopilot available based on Tajin's model. Plug coordinates in to system using Keyboard at Navigator's station. Engage Autopilot either through clicking button at Navigator's station or hitting 5 while seated in Pilot's seat. Autopilot is for steering only. Due to the complexities for throttle adjustments for both Combustion Pressure and Drive Pressure it became to cumbersome to automate. May consider in the future. There are Displays at the Navigator's station which will show Distance to GPS Target and Bearing to GPS Target.

Craft is capable of sustained speeds with relatively calm water of 140-160 m/s (270 - 310 knots). As the water gets more choppy try adjusting the control planes up. If the boat starts "bouncing" dial back the RPS to get it to settle.


PROCESS FOR LIGHTING ENGINES

- Adjust Combustion RPS Throttle for Port and/or SB Engine to at least 20 RPS.
- Turn the keys relating to th the Port and SB Fuel feeds in order to provide power to the fuel pumps and open the Jet Fuel Valves. The keys will also unlock the Compressor Buttons.
- Engage the two Compressors (Port and SB) to start pumping air in to the engines.
- Push on the Electric Motor Power Assist button to provide some RPS assistance to the turbines in order to get the Jet Engines to turn over quicker.
- Watch for Combustion RPS alerts for both Engines (+200 RPS). If you get alerts dial back the Combustion Throttle to reduce pressure or put load on system by engaging Jet Drive Clutch Pressure Throttle (apply slowly as dial'ing the Clutch up quickly could cause too much torque which will flip your boat)

OPTIMUM SETTINGS FOR HIGH SPEED RUN
180 RPS on Port and SB Jet Combustion Chamber Throttle (RPS Alerts will be issued)
+0.0000 on Control Plane Settings
100% Jet Drive Clutch Pressure
Should be able get between 150-160 m/s. On straight runs. You will Need to watch for AoA alerts and adjust RPS Throttle accordingly. Steering is still relatively stable but on chopper seas, depending on the wave direction, it is possible to start "dolphin'ing" (cycle of going underwater and then jumping out with each cycle getting progressively larger). To get out of that cycle cut power to jets by setting Combustion Chamber Throttle to zero, turn off the Compressors and turn off Jet Fuel Feed. Once it settles down, relight your engines and start moving again.


ALERTS
NOTE: There is a button on the right side behind the Pilot Seat in the Ceiling which allows you to Silence the sound of all the alarms while the appropriate indicators will still flash.

AoA (Angle of Attack) Alert: If the front end tilts at angle considered dangerous there will be an indicator alert in the Pilot view. Yellow is warning, red is critical. It is a signal to try adjusting the Engines RPS in order to keep the nose down and the ship level. No audible alerts.

Sonar Depth Alert: Adjustable depth setting at Navigator's Station. Defaults to 0.0. When the depth sensed below the boat breaches the alert depth an alert will be issued.

Jet Fuel Available Alert (Port and SB): When the fuel levels move below 500 units on the Port or SB jet fuel tank a warning alert will be issued, below 200 and a critical alert is issued. If Fuel Cross connects are ON it calculates the available fuel as Port + SB. If Cross Connects are off the Fuel level will be compared against the volume in the separate tanks only.

Jet Combustion RPS Alert (Port and SB): When the RPS in the Combustion chamber is over 130 RPS a Warning alert, at 150 RPS a Critical Alert is issued. Damage to the Jet Engine occurs at 200 RPS. Measures to reduce RPS would be to reduce the Throttle for the Combustion RPS or to adjust the Jet Drive Propeller Drive Clutch in order to put load on the system.

Engine Compartment Water Level Alert (WIP): If water is detected in the Engineering Compartment an alert will be issued. There are drain pump controls in the CONTROL area near the Passenger seat used to activate pumps to clear either ENGINE COMPARTMENT or CONTROL. Dials indicate the current water level.


APU Electical Generator available for generating Electicity using a Small Diesel Engine.

Refueling Ports on both sides of Boat. You can attach both Diesel and Jet Fuel Connectors to the same Fuel Connector. There are Fuel Filters which will send the appropriate Fuel to the right tanks.

Tow Connector located off rear of ship with Small Connector. Controls are on top of ship (external) on the SB side and duplicated at rear. A sign located at centre rear will be blank if winch set to go out and read IN if set to retract.

Equipment Hatch external on SB side which contains a Dive Suit.


BREAKERS

All located in CONTROL
- Reserve Battery Power Array to Power Grid
- Main Battery Power Array to Power Grid
- Generators to Power Grid
- APU to Power Grid
- Power Grid to Systems Master
- Systems Master to Primary Systems (Light, Hatches, Displays not relating to Drive, Some Sensors)
- Systems Master to Drive Systems (Jet Drive Engines and Electric Drive Engines)