BV-24

Signal processing function of BV-24

The BV-24 unit collects and processes signals from angular rate sensors, linear acceleration sensors, gyroverticals, barometric altitude and airspeed sensors, and the BSV-24 radio altimeter interface unit when the radio-altitude hold function is used. The block sums, scales and corrects these signals according to the control laws of the SAU-V24-1 system. Its analog circuits may include operational amplifiers, differentiating circuits, integrating circuits and channel-specific electronic modules. Correct operation of BV-24 is important for stable automatic control and accurate command formation.

BV-24 control channels

BV-24 performs separate computation for the main helicopter control channels. These include roll, pitch, heading and altitude / collective pitch channels. In the roll channel, the unit supports stabilization and roll-angle control. In the pitch channel, it supports longitudinal attitude stabilization. In the heading channel, it supports course stabilization and turn coordination. In the altitude / collective pitch channel, the block works with altitude-related inputs, including signals from BSV-24, to support barometric or true-height hold functions according to system mode and documentation.

Command output to VUAP-1 and KAU-110 units

After processing input signals, BV-24 forms scaled control voltages for the autopilot system. These signals are transmitted through the VUAP-1 unified helicopter autopilot circuits to the KAU-110 electrohydraulic control actuators, which move the helicopter control linkages within the authority allowed by the autopilot system. BV-24 may also provide signals related to longitudinal and lateral trim actuators / force-loading mechanisms depending on the channel and mode. This makes the unit one of the main links between sensor data and physical control movement.

Integration with SAU-V24-1 panels and related units

BV-24 is integrated with the SAU-V24-1 control and mode-selection equipment. The unit works with PVM-24 and PVP-24 control panels, where the crew selects operating modes such as altitude hold, hover-related modes or flight path stabilization modes depending on system configuration. It also interacts with BSV-24, VUAP-1 and related sensor systems. The block switches or coordinates internal control logic according to crew commands and system conditions. Built-in test / monitoring circuits may provide fault indications for SAU channels on the cockpit panel.

Construction and ordering of BV-24

BV-24 is built as a metal cassette-type monoblock with removable electronic subunits / boards divided by control channels. This construction supports inspection, bench testing and replacement of individual channel modules during repair. The unit is typically installed in the helicopter radio / equipment compartment on a specialized shock-mounted SAU frame. Before ordering, the helicopter type, SAU-V24-1 configuration, series, condition and documentation set should be confirmed. The block may be required for automatic control system repair, channel fault troubleshooting or spare parts stock.