BOH product sheet (pdf) - Saab

saabgroup.com

BOH product sheet (pdf) - Saab

BOH - POD WITH

CMDS AND MAW


oH

BOH - ADVANCED MISSILE THREAT DETECTION

AND COUNTERMEASURES CAPABILITY

BOH is a highly effective countermeasures

self protection pod for use

on any fixed wing aircraft. BOH provides

covert sustainable pre-emptive

dispensing, missile warning, forward

firing of flares and cocktail dispensing.

All these capabilities have been incorporated

into the form-factor of a missile

utilizing the well established AIM-9

Sidewinder and AIM-120 AMRAAM

interfaces and characteristics for lean

aircraft integration.

EFFECTIVE DECOYS

TECHNICAL DESCRIPTION

BOH is an implementation of the Saab BOL

Countermeasures Dispenser System (CMDS)

and Compact Integrated Defensive Aids Suite

(CIDAS) into the shape of a missile.

The BOH is modular and can be arranged in

a multitude of configurations. The building

blocks are: MAW, pyrotechnical dispenser,

controller, laser sensor and electromechanical

dispenser modules. The countermeasures

dispensing is characterized by providing long

duration pre-emptive dispensing capability

with the BOL dispenser as well as forward

firing flare capability with the BOP dispenser

and it is designed to defeat all modern

IR-guided threats. The dispensers cater for

highly effective flare cocktail capability. The

dispensing system also caters for highly effective

chaff dispensing.

The BOH pod can be mounted on any missile

launcher capable of launching AIM-9

Sidewinder or AIM-120 AMRAAM type of

missiles. The BOH has mass properties of an

AIM-9 Sidewinder.

Pyrotechnically dispensed propelled flare Electromechanically dispensed chaff Electromechanically dispensed

pyrophoric material (IR)

No. 218 K7 Type 1 propelled flare BOL Chaff BOL IR


oh

MAJOR COMPONENTS

EWC

The Electronic Warfare Controller (EWC)

hardware and software performs the following

independent functions;

• Defensive Aids Control

• Missile Approach Warning Analysis

• Decoy Dispensing

MISSILE APPROACH WARNING

FUNCTION, MAW-300

The module consists of 2 MAW-300 sensors

interfacing with a processing card in the

EWC. Each sensor is an optical staring sensor

that reports the azimuth, elevation and amplitude

characteristics of the most prominent

UV sources in its Field Of View (FOV) to the

EWC. Each sensor has a 110 degrees conical

FOV. The EWC performs the Built-In-Test

control and management of the MAW sensors.

The MAW analysis consists of dedicated

hardware and software functions that receive

the processed data from the sensors. Tracks

are formed from the sensor data and are

evaluated based on their temporal irradiance

and spatial modulation characteristics. If the

GPS

MAW Magazine

track is classified as an emission originating

from a missile on a converging flight path,

a MAW alarm is issued. Missile alarms are

transferred to the Defensive Aids Controller

for display and countermeasures management

purposes.

DEFENSIVE AIDS CONTROL FUNCTION

The Defensive Aids Controller performs

the high level integration, management and

control of the sub systems as well as external

interfacing to the avionics systems. Alarm

data is received from the aircraft warning sub

system. Weapon systems matching and management

is performed based on the User Data

File (UDF) data. Control unit outputs are

generated and countermeasures responses are

assigned based on weapon system identification

and priorities as defined in the UDF. A

central data record function is also managed

by the Defensive Aids Controller.

DECOY DISPENSING FUNCTION

The decoy dispensing function consists of

dedicated hardware and software functions

that interface to and manage the pyrotechni-

Electronics Unit for

Pyrotechnical Dispenser EWC

cal BOP and electromechanical BOL dispensers.

Countermeasures patterns and sequences

are stored and initiated via Defensive Aids

commands. Payload data, mode data and dispensing

data are transferred to the Defensive

Aids Controller for display purposes.

COUNTERMEASURES DISPENSER, BOP

The BOP is a light weight pyrotechnical dispenser

holding 30 1”x1” or 15 2”x1” standard

8” long payloads, also US Navy round formfactor

payloads can be accomodated. The

dispenser is fully integrated with the EWC

functionality and provides for misfire detection

and compensation, intelligent magazine

recognition and quick loading.

The minimum time between two firing pulses

from a single BOP is 10 ms.

BOL DISPENSER

The BOL is a light weight electromechanical

dispenser holding 160 BOL-chaff or BOL-IR

payloads. The dispenser is fully integrated

with the EWC functionality and provides

quick loading thanks to its unique built-in,

tool-less locking mechanism.

Safety Pin Unit BOL

Alternative Sensor


AIRCRAFT INTERFACE

GENERAL

BOH is designed to interface with any missile

launcher. The mass and center of gravity

properties are similar to those of an AIM-9

Sidewinder missile and aerodynamic properties

are similar to those of an AIM-120

AMRAAM missile.

The BOH can be integrated with MIL-

STD-1553 or RS-485 data links to adapt to

other displays and control means. To further

simplify integration, wireless technology can

be used.

MODES OF OPERATION

The BOH has the following dispensing modes:

• AUTOMATIC

• SEMI-AUTOMATIC

• MANUAL

Manual initiation of dispense programs can be

performed at all times.

Backup dispensing can be performed based

on a graceful degradation philosophy, should

parts of the system fail.

DATA

• Probability of Warning, POW, is >99 %,

provided the threat is within the field of view

coverage of the front mounted MAW module.

• Response time, time to impact, has been

optimized for the use of reactive pyrotechnic

countermeasures while maintaining a low

false alarm rate.

• Data logging is provided for through recording

of processed declared missile events,

built-in-test and inertial navigation data.

• Countermeasures dispensing: The forward

module BOP pyrotechnical dispenser is oriented

with a depression angle of 40 degrees

firing downward/forward. The rear part of

the BOH houses the BOL electromechanical

dispenser releasing the payload aft into the

slipstream of the aircraft.

Specifications subject to change without notice

www.saabgroup.com

HUMAN MACHINE INTERFACE, HMI,

AIRCRAFT OPERATOR LEVEL

• MAW generated THREAT ALARMS can be

indicated on displays.

• BUILT-IN-TEST results are indicated on

aircraft displays and on a built-in indicator

on the BOH maintenance panel while on the

ground.

• REMAINING LOAD can be indicated on

displays.

• JETTISON. It is possible to jettison all remaining

pyrotechnical load from the BOH pod.

GROUND SUPPORT

• The BOH pod has a Ground Support Interface

that provides the ground crew with builtin-test

and power indications, ground based

end-to-end testing, initiated built-in-test and

an Ethernet based data port.

• A Chaff Flare Test Block (CFTB) emulating

a loaded magazine can be used for ground

testing of the BOP dispenser.

• A Zero Volt Tester can be used to make sure

no voltage is on the BOP dispenser during

loading.

Saab AB Tel +46 8 580 840 00

Electronic Defence Systems Fax +46 8 580 322 44

SE-17588 Järfälla info@saabgroup.com

Sweden

CONTROL OPTIONS

The BOH pod provides for future growth

in terms of aircraft interface using MIL-

STD-1553, RS485 data links and discrete

signals. Also, wireless technology can be

utilized. The pod can therefore interface to

virtually any display or control means.

THE WORLD IS AN EVER-CHANGING PLACE AND OUR FIELD

IS DEFENCE AND SECURITY. WE PUSH BOUNDARIES

SEEKING NEW AND BETTER SOLUTIONS.

WE STRIVE TO ANTICIPATE TOMORROW.

• A Tool to Generate User Data Files, e.g.

dispensing program, can be used to adapt to

mission characteristics.

• A Data Loader tool can be provided to

upload to the pod User Data Files containing

e.g. dispense programs.

• A tool for Post-Mission Analysis, e.g. mission

flight route, inertial navigation data, threat

data, dispensing activities, can be used to

analyze recorded mission data.

• 3-in-1 Flight Line Tester, to stimulate MAW or

laser sensors.

Doc id: P-300128 - eng. - ver. 2 - September 2012

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