MH-60R - Armament System Flashcards
(22 cards)
How does the CMP contribute to the armament system?
The CMP must be on for the armament systems to be functional.
What are the components of the armament system?
Control monitor panel (CMP) – Pilot and copilot only;
• Hand control unit – SO release consent not operable;
• Armament control indicator – Pilot and copilot only;
• Stores and Self-Defense Computer/Stores and Self-Defense Program;
• Signal data converter (SDC);
• Programmable interface units (PIU) ;
• BRU-14/A bomb racks;
• Emergency jettison panel (EJP) – Pilot and copilot only.
Briefly describe the Armament Control Indicator panel?
Allows the operator to control, and interface with, the stores system. The ACI provides the following capabilities:
• Master arm for enabling or disabling all functions which involve arming and/or launch of weapons or expendable stores.
• Automatic disarming of the master arm functions upon receipt of a master arm interrupt signal, in the event of a stores jettison, from the EJP.
• LASER SELECT switch for enabling the laser range finding and designation (LRD), laser target marker (LTM), and eyesafe laser range finnder (ELRF).
What does the SSDC provide to the armament system?
The SSDC is a single board computer, installed in the MC, which contains the SSDP. The SSDP is responsible for all interfaces between the operator controls, Avionics Operational Program (AOP), PIUs, bomb rack units, and the individual selected weapons. The SSDP also inventories installed stores, updates this inventory when a store is released or jettisoned, and performs built-in test (BIT) when required by the AOP. It also provides the interface for presetting the various weapons with mission preset data provided by either the mission planner, or manually entered by the crew.
What does the Signal Data Converter provide to the armament system?
Provides an aircraft/store electrical interface with the PIU. Speci cally, the SDC provides ltered 115 Vac primary power, and 28 Vdc launcher power. The SDC is located in the transition section.
Briefly describe the PIUs
The PIUs are provided to facilitate total systems interface between the operator and the weapons system. There are five PIUs. The M299 also has a direct interface with the weapons bus.
Describe the function of the cabin PIU
Interfaces the MC with the pilot and copilot HCUs, nose bay MTS interlock switches, ACI, CMP, collective ASE switches and controls, and MTS power control. It is located on the SO station port side panel.
Describe the Left Outboard PIU
Interfaces the MC with SDC power controls, BRU-14, and torpedo interfaces for that station. It also interfaces the HCU release consent with the M299 missile launcher or the LAU-61 rocket pod. It is located in the LHEP.
Describe the Left Inboard PIU
Interfaces the MC with the SDC power controls, fuel switch, BRU-14, and torpedo interfaces for that station, and the sonobuoy launcher. It is located in the transition section, on the port side avionics shelf.
Describe the Right Inboard PIU
Interfaces the MC with the SDC power controls, fuel switch, BRU-14, and torpedo interfaces for that station, and ASE systems. It is located in the transition section, on the starboard side avionics shelf.
Describe the Right Outboard PIU
Interfaces the MC with SDC power controls, BRU-14, and torpedo interfaces for that station. It also interfaces the HCU release consent with the M299 missile launcher or the LAU-61 rocket pod. It is located in the RHEP.
Briefly describe the BRU-14A
Provides suspension and release for pylon-mounted torpedoes, fuel tanks, and weapon launchers from the right inboard, left inboard, left outboard, and right outboard stations. The BRU-14/A requires that the suspension lugs on the store or its suspension bands be separated by 14 inches. The bomb rack also provides for the retention/release of arming lanyards depending on if the store is launched armed or jettisoned unarmed.
What is the BRU-14/A composed of?
- The mechanical assembly consisting of the metal frame, the hooks and hook tie linkage, the spring-loaded sear, and bellcrank assemblies.
- The linear electromechanical actuator (LEMA), in- ight operable bomb rack lock (IFOBRL) actuator, the arming units, and the auxiliary unlock assembly.
What are used with the BRU-14/A but not necessarily part of it?
Includes the stores loaded (hook latch) switch and cartridge activated devices (CAD) and their associated cabling.
How does the BRU-14/A release weapons unarmed and armed?
These two modes employ a CAD in the auxiliary unlock assembly to ensure the rack is unlocked by disabling the IFOBRL. After this, another CAD is red to force the SEAR to spring loose the hooks, instead of using the bell crank. In emergency jettison the arming units are de-energized and the arming lanyards fall free with the unarmed weapon. In secondary release, which follows a failure in the primary release sequence, the arming units remain energized and the weapon is released armed.
If the rack is unlocked and not launched or jettisoned and a decision is made to safe the pylon, then the IFOBRL can be electrically re-locked by the armament controller.
What does the Emergency Jettison Panel do?
The EJP is located in the center section of the lower console. The panel allows the operator to control and interface with the stores jettison system. The EJP provides the ability to emergency jettison all stores (excluding CMDS stores) or to selectively jettison stores.
Briefly describe the sonobuoy system
The sonobuoy launcher system is designed to carry and pneumatically launch up to 25 sonobuoys when the left hand extended pylon (LHEP) is not installed. Up to 15 sonobuoys may be carried when the LHEP is installed. The sonobuoys exit from the launcher on the left-hand side of the helicopter. Launching is accomplished automatically or manually, utilizing compressed air from a storage bottle. In the automatic mode, the sonobuoy will launch when the helicopter captures the sonobuoy FTP.
What does the sonobuoy system consist of?
The system consists of a sonobuoy launcher assembly, a distribution module, pneumatic supply module, and the LIB PIU.
Briefly describe the distribution module
The distribution module connects the compressed air supply utilizing a stepping motor, controlled by the left inboard PIU, to route air pressure to the selected launch tube. A manual selection knob and tube selected indicator window are located on the distribution module. The manual selection knob can be hand rotated to position the rotary valve to vent; however, it cannot be used to manually launch sonobuoys. The tube selected indicator window displays position of the rotary valve at any 1 of 25 launcher tubes or vent.
Briefly describe the pneumatic supply manifold
Mounted below the sonobuoy launcher. A servicing valve is provided on the left-hand side of the helicopter above the SO window for servicing the air bottle. The system shall be serviced to 1150-1200 psi. 1100 psi ensures all sonobuoys can be launched, and, if required, jettisoned. This value takes into account maximum permissible leakage rates.
Briefly describe the sonobuoy launcher safety valve
Two-position safety valve. Placing vent valve handle in the SAFE or horizontal position vents air pressure from the manifold. Placing vent valve handle in the vertical position charges the sonobuoy launcher system.
What are the limitations of the sonobuoy launcher system?
- With the LHEP installed, loading the bottom two rows of the sonobuoy launcher is prohibited.
- Launching sonobuoys with the sonar transducer in the water is prohibited. The deployed sonobuoy array may become entangled with the ALFS cable, resulting in damage to the sonar transducer.
- Maximum capacity of the sonobuoy launcher is 25 sonobuoys without the LHEP installed or 15 sonobuoys with the LHEP installed.
- Maximum sonobuoy launcher payload is 800 lb.
- Sonobuoys shall be loaded in the launcher with the alignment mark at the 9 o’clock position, and turned clockwise until sonobuoy locks with the alignment mark in the 6 o’clock position. After loading, verify sonobuoys are locked. Primary veri cation should be visual inspection of sonobuoy launcher from the cabin. When dipping sonar is installed, sonobuoys cannot be visually veri ed in the locked position from the cabin. In this case, pull on sonobuoys to check sonobuoys are locked.
