1 / 29

UH-60 HYDRAULIC SYSTEM for UH-60 IPC 99-3

FUN WITH HYDRAULICS. OBJECTIVE: . To develop the Instructor Pilot's understanding of the components and functions of the UH-60 Hydraulic System . OVERVIEW. HYDRAULIC SYSTEM DESCRIPTIONMAIN COMPONENTS AND THEIR LOCATIONDESCRIBE THE FUNCTION OF EACH COMPONENTDISCUSS THE INTERACTION OF EACH COMPONEN

agnes
Download Presentation

UH-60 HYDRAULIC SYSTEM for UH-60 IPC 99-3

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. UH-60 HYDRAULIC SYSTEM for UH-60 IPC 99-3 CW4 Larry Anderson INARNG

    3. OBJECTIVE: To develop the Instructor Pilot’s understanding of the components and functions of the UH-60 Hydraulic System

    4. OVERVIEW HYDRAULIC SYSTEM DESCRIPTION MAIN COMPONENTS AND THEIR LOCATION DESCRIBE THE FUNCTION OF EACH COMPONENT DISCUSS THE INTERACTION OF EACH COMPONENT WITH THE REST OF THE SYSTEM (LDI SEQUENCING) REVIEW EMERGENCY PROCEDURES/LIMITATIONS GO THROUGH SOME HYDRAULIC SYSTEM TRIVIA SUMMARY QUESTIONS AND ANSWERS (target practice time)

    5. DESCRIPTION: TWO COMPLETELY REDUNDANT SYSTEMS (1&2) ONE BACKUP THAT SUPPLIES FULL FLIGHT CONTROL PRESSURE FOR EITHER SYSTEM (1 OR 2) OR BOTH. Note: If both 1 & 2 HYD stages are out, there is a slight restriction in max rate of flight control movement (6.2 GPM @2900 psi). SYSTEM PRESSURE (No Load) is 3,050 + 50 psi.

    6. MAJOR COMPONENTS: 3 HYD PUMP MODULES 2 TRANSFER MODULES, A PILOT ASSIST, AND A UTILITY MODULE 3 DUAL PRIMARY SERVOS 1 DUAL TAIL ROTOR SERVO 4 PILOT ASSIST SERVOS AN APU ACCUMULATOR, AN APU HANDPUMP 1 SERVICING HANDPUMP

    7. COMPONENT FUNCTION: HYD PUMP MODULES: COMBINED PUMP & RESERVOIR, identical and interchangeable with each other PILOT ASSIST, TRANSFER & UTILITY MODULES: Integrated assemblies of restrictors, switches, and valves for LDI switching. Utility module routes B/U to 1 or 2 and APU accum. PRIMARY SERVOS: 2 independent stages , each can react to max aero. loads and are Interchangeable. TAIL ROTOR SERVO: 2 stage (1 at a time) powered by #1 or B/U pump only

    8. COMPONENT FUNCTION: 4 PILOT ASSIST SERVOS: To overcome friction, eliminate SAS feedback, and allow FPS input to flight controls. APU ACCUMULATOR: Supplies 2850 + 150 psi HYD press. for APU starting. An APU hand pump to manually recharge accumulator. 1 SERVICING HANDPUMP: Allows refilling of any reservoir in the system through a selector valve.

    9. LDI sequencing #1 System: (A Leak Starts) MC #1 RES LOW #1 TAIL RTR SERVO BACK-UP PUMP ON #2 TAIL RTR SERVO

    10. LDI sequencing #1 System: (Leak continues) MC #1 RES LOW #1 HYD PUMP BACK-UP PUMP ON Pressure on #1 TV feeds #1 PRI servos and #1 TR servo is turned back on. If no other lights, leak was upstream of #1 transfer module.

    11. LDI sequencing #1 System: (Leak continues) MC #1 HYD PUMP #1 RES LOW BACK-UP RES LOW BACK-UP PUMP ON EMER PROCEDURE ???? Servo off SW 1st STG LAND AS SOON AS POSSIBLE LIMITATIONS ????

    12. LDI sequencing #1 System: (Resulting Condition) MC #1 PRI SERVO PRESS #1 HYD PUMP #1 RES LOW BACK-UP RES LOW BACK-UP PUMP ON

    13. LDI sequencing #1 System: (Resulting Condition for no pilot action) MC #1 PRI SERVO PRESS #1 HYD PUMP #1 RES LOW BACK-UP RES LOW #1 TAIL RTR SERVO WHAT ALL HAVE WE LOST ???? WE’VE LOST #1PRI SERVOS, & #1 AND #2 TAIL RTR SERVOS LIMITATIONS ????

    14. LDI sequencing #2 System: (A leak starts) MC #2 RES LOW BOOST SERVO OFF SAS OFF TRIM FAIL FLT PATH STAB PROCEDURE ???? BOOST AND FPS OFF LAND AS SOON AS PRACTICABLE

    15. LDI sequencing #2 System: (Leak continues) MC #2 HYD PUMP FLT PATH STAB TRIM FAIL #2 RES LOW BACK-UP PUMP ON PROCEDURE ???? Do a Power on Reset

    16. LDI sequencing #2 System: (Resulting Condition) MC #2 HYD PUMP #2 RES LOW BACK-UP PUMP ON LIMITATIONS ????

    17. LDI sequencing #2 System: (Leak continues) MC #2 HYD PUMP #2 RES LOW BACK-UP RES LOW BACK-UP PUMP ON PROCEDURE ???? Servo off SW 2nd STG LAND AS SOON AS POSSIBLE

    18. LDI sequencing #2 System: (Resulting Condition) MC #2 HYD PUMP #2 PRI SERVO PRESS #2 RES LOW BACK-UP RES LOW BACK-UP PUMP ON LIMITATIONS ????

    19. LDI sequencing #2 System: (Resulting Condition for no pilot action) MC & #2 HYD PUMP #2 PRI SERVO PRESS #2 RES LOW BACK-UP RES LOW BOOST SERVO OFF SAS OFF FLT PATH STAB TRIM FAIL NO ADVISORIES

    20. EMERGENCY PROCEDURES #1 HYD PUMP Caution Light On MC & #1 HYD PUMP #1 TAIL RTR SERVO BACK-UP PUMP ON #2 TAIL RTR SERVO ON RESULTING CONDITION: MC & #1 HYD PUMP BACK-UP PUMP ON

    21. EMERGENCY PROCEDURES #2 HYD PUMP Caution Light On MC & #2 HYD PUMP TRIM FAIL FLT PATH STAB BACK-UP PUMP ON RESULTING CONDITION: Do a Power On Reset MC & #2 HYD PUMP BACK-UP PUMP ON

    22. EMERGENCY PROCEDURES #2 PRI SERVO PRESS Caution Light On MC & #2 PRI SERVO PRESS A PRIMARY SERVO VALVE IS JAMMED IF BOTH SERVO OFF SWITCHES ARE CENTERED LAND AS SOON AS POSSIBLE

    23. EMERGENCY PROCEDURES BOOST SERVO OFF Caution Light On MC & BOOST SERVO OFF INDICATES A PILOT VALVE JAM IN EITHER COLLECTIVE OR YAW BOOST SERVO, OR THEY ARE TURNED OFF BOOST SWITCH OFF LAND AS SOON AS PRACTICABLE

    24. EMERGENCY PROCEDURES #1 AND #2 HYD PUMP Caution Lights On MC & #1 and #2 HYD PUMP TRIM FAIL FLT PATH STAB BACK-UP PUMP ON #2 TAIL RTR SERVO ON PROCEDURE ???? Power On Reset LAND AS SOON AS POSSIBLE LIMITS ????

    25. EMERGENCY PROCEDURES SAS OFF Caution Lights On MC & SAS OFF INDICATES HYD PRESS IS < 2000 + 50 PSI TO THE ACTUATORS OR BOTH SAS1 AND SAS2 ARE TURNED OFF PROCEDURE ???? FPS Switch-Off

    26. HYDRAULIC SYSTEM TRIVIA What temps do we change to MIL-H-5606 & can we mix it with MIL-H-83282 ???? What residual pressure is in the HYD system (static) ???? What do the flow restrictors do in the utility module for the B/U HYD system ???? Hot Weather Limitations ???? What is the capacity of the servicing reservoir ???? What flow rate will activate the velocity fuze ???? What gas is used to recharge the APU accumulator ???? What components of LDI are NOT checked by the HYD SYS TEST Switch on ACFT run up ????

    27. SUMMARY REVIEWED HYDRAULIC SYSTEM DESCRIPTION TALKED ABOUT MAIN COMPONENTS AND THEIR LOCATION DESCRIBED THE FUNCTION OF EACH COMPONENT DISCUSSED THE INTERACTION OF EACH COMPONENT WITH THE REST OF THE SYSTEM (LDI SEQUENCING) REVIEWED EMERGENCY PROCEDURES/LIMITATIONS GONE THROUGH SOME HYDRAULIC SYSTEM TRIVIA

    28. ???? QUESTIONS ????

    29. THE END

More Related