technology focus vol. 22, issue 5 october 2014

ISSN:0971-4413BULLETIN OF DEFENCE RESEARCH AND DEVELOPMENT ORGANISATION Vol. 22 October 2014

PRODUCTS DEPLOYED

Technical Specification

Weight Buoyancy Sizes

1.0 kg 18.5 kg (min.) Small and large

PRODUCTS & TECHNOLOGIES UNDER MATERIAL CLUSTER

NBC DECONTAMINATION SUIT

The impermeable suit is meant for the

protection from hazardous toxic

environment during decontamination

work. After wearing it, the individual

may move freely and work with the

decontamination equipments. It is

made up of rubberised fabric and

activated charcoal coated non-woven

fabric.


Weight BTT Shelf life

2.5 kg (max.) 06 h (min.) 7 Years

TENT GLACIER (for 10-12 MEN)

Climatic conditions prevailing in the northern sector of

our country are entirely different from those of other

regions. The low temperature equipped with high wind

creates chill. In order to safe-guard the country, our

Army has to operate in such hostile and harsh weathers

(Glacier) conditions. Glacier tent for 10-12 men has been

developed by DRDO and is intend to be used for

habitation of troops deployed in glacier regions. It oprovides protection to the troops up to -40 C. The glacier

tent has been made on double-layer principles. The outer

layer consists of waterproof fabric. The inner layer is

made of insulating materials, aluminized fabric. These

materials are encased in closely woven fabric cotton.


Length Width Height Wall height Weight

4.20 m 4.30 m 2.35 m 1.55 m 290 kg

TENT GLACIER (for 10-12 MEN)

SYNTHETIC LIFE JACKET MK-I

It is a life-saving appliance used by the Army (Infantry

and Engineering) personnel

by way of preventing the

wearer and the equipment

carried by him from drowning

in water when crossing water

obstacles and or in bridging

operations. Rip stop flame-

retardant nylon fabric is used

a s b a s i c m a t e r i a l a n d

expanded polyethylene foam as filling material. A

plastic whistle has also been provided for use in

emergency, if and when help is needed.

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Now a days, technological thrust is entrusted towards

miniaturization of technologies with enhance

performance having multiple functions in one structure

thus trying to mimic nature. This could be made

possible with multi-functional materials where the

structures have more than one function in the form of

composites or hybrid of several distinct material phases

in which each phase perform a different but necessary

function.These functions may include stable structures,

sensing, actuators, self healing and energy systems for

protection of personnel & structures against external

radiation, chemical, ballistic & blast threats etc.

The DMSRDE being nodal non-metallic materials lab

have delivered several cutting edge technologies and

products to maintain life line of defence forces and

sister system laboratories in the form of personnel

protection equipment like BPJ, helmet, boot anti-mine,

NBC suits, extreme cold weather clothing & shelters,

coolants for mechanized ground vehicles for extreme

cold conditions (-40°c), aerial vehicles, gaskets & seals

for gas turbine engines, LCA and missile systems, etc.

Via fusion innovation, DMSRDE has developed unique

capabilities to develop flexible nano sensors for distant

health monitoring where flexible polymers coated with

novel metals like Ag, Au, Pt, etc. have been effectively

develop for ECG & EEG monitoring. The FRP nano

composites have been developed using inorganic

polymer modified functional multi-walled carbon nano-

tube to achieve diversified properties in one i.e.

electrical conductance with thermal insulation for

submarine applications.

DMSRDE has also developed a strategically important

MSPCE and shield for green terrain. These success

paved a path for development of MSN for tactical

applications by armed forces.

In the area of personnel protection, DMSRDE has

developed state of art BPJ in weight less than 10.5 Kg in

which we are able to provide fair shots on throat and

groin. The ceramic armour used herein covering an area -2 2of 1000 cm as compared to 750 cm in general BPJs. The

ceramic armour uniquely has designed to take body

shape as compared to flat ceramic panels so far used

conventionally.

The DMSRDE has also developed strategic materials for

high and ultra high temperature applications e.g.

polysilane & poly carbosilane as precursor materials for

SiC fiber, SiC resin materials for making SiC SiC , F R

C SiC , CFCMCs & CMC for high tech applications. F R

Another strategic material Polyphosphazene has also

been developed which has glass transition temperature

up to - 100°c and very useful for cryogenic applications.

The Fluroalkoxypolyphosphazene elastomers are fire

resistance rubber material and not affected with UV

radiation and stable in both protic & aprotic solvents.

DMSRDE has developed a universal compact protective

memory module (CPMM) in collaboration with HAL

which will be used in all helicopters & aeroplanes in near

future. Uniquely DMSRDE has developed a capability

for spinning of serveral advanced fibers by melt

spinning technique viz. SiC fiber, UHMWPE fiber,

polyphosphazene fiber and PBO fibers, etc.

Besides material & technology development, DMSRDE

has contributed a lot for life extension programme and

failure analysis of fighter planes, helicopters of IAF, thus

serving the nation continuously and leading to achieve

self reliance.

(Dr. A. K. Saxena)

Outstanding Scientist & Director

DMSRDE, Kanpur

From the Desk of Guest Editor

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NBC SUIT PERMEABLE Mk–IVFor combat operations in CWA hazards

Meets international standards of performance

Aim

To achieve following main functional requirements:

• Breakthrough time: 24 h2• Air permeability: 50 cc/cm /s

• Re-usability

Concept

FREE-FLOW OF NBC EQUIPMENT

Present Status

• GS approval accorded by Army

• TOT to Ordnance Factory and Trade

• Army Indent of 39868 productionised

• Navy Indent of 1000 productionised

Item Qunatity

Army Others Total

NBC Permeable Suit Mk-IV 39868 1300 41168

NBC Permeable Suit Mk-I 21000 8600 29600

Decontamination Suit 1140 686 1876

Casualty Bag (Full) 6682 1912 8594

Casualty Bag (Half) 3316 459 3775

Facelet 107346 24182 131528

Gloves 369752 1270 371022

Overboot 11000 1270 12270

Haversack 405718 12469 418187

Total Value = Rs. 100 Crore

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MULTI - LAYER MATRIX

1. OUTER FABRIC

2. ADSORBENT LAYER

PROPERTYDESIGN

1. TOXIC VAPORS

2. CWA DROPLETS

3. NUCLEAR DUST

4. RAIN SHOWERS

5. FLAMEHAZARD

6. PERSPIRATIONHUMAN BODY SIDE

66

CONTAMINATED ZONE

1 2 3 4 5

Composite Fabric Matrix (Disruptive Outer Side)

FR Polyester FC treated fabric

Non-wovenPolyester (laminate)

Activated Carbon Spheres

PV Blended Substrate

Polyester: Viscose Blend Spun yarns in Warp & Weft Plain Weave

SUBSTRATE

2800 m /gSurface area

85 %Particle size90Hardness No.

70 %CTC adsorption

Polyester Staple FibreNeedle punched non- wovenPowder coated for lamination

Staple FibreSpun yarns in Warp & Weft Fluorocarbon Treatment

MATERIALS

POLYESTER FABRIC

TOP LAMINATE

ACTIVATED CARBON SPHERES

TYPICAL CHARACTERISTICS

TEST PARAMETER VALUE

Mass 100 gsm

Flammability

After-flame (sec.) Nil

Oil Repellency No penetration

Water repellency Rating 902Air permeability 50 cc/cm /sec

Performance after 3 washes No degradation

PROPERTIES

TEST PARAMETER VALUE

Mass 450 gsm

HD Break through time 30-36 h

DCP Penetration time 150 sec

Bending Length (Warp Weft) 60/60 mm2Air permeability 50 cc/cm /sec

Performance after 3 washes No degradation

REPELLENTFABRIC AS

OUTER LAYER

ADSORBENT FABRIC AS

INNER LAYER

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Technical Data

0 • Protection up to – 40 C• Waterproof and windproof• White/ olive green outer for better camouflage• Sizes designed to cover entire population

Status

Bulk quantities given to Army during Kargil Operations

17 items have been accepted and mass-produced

TOT to trade and Ordnance Factories

Production Value -Rs. 100 crore

FRP COMPOSITES FOR

KANCHAN ARMOUR

Fiber-reinforced Plastic (FRP) materials have been

studied extensively by various investigators all over the

world. However it's suitability to form composite

armour is little known from published literature.

Therefore, R&D assignments were undertaken by

DMSRDE Kanpur, and DMRL Hyderabad to develop

and evaluate various FRP laminates suitable for

ballistic applications. DMSRDE has developed ballistic

resistant composites (1000 mm x 1000 mm x 50 mm)

based on glass / phenolic sandwich structure.

Production Agency M/S Parmalli Wallace, Bhopal

AHSP DMRL, Hyderabad

Production 145 tons of FRP Kanchan Armour costing 153 Lakhs has been supplied.

Salient Features: FRP composites provide protection

from 105 KE FSAPDS when three FRP plates are used

between two jackal steel plates.

FRP COMPOSITES FOR KANCHAN ARMOUR

GLACIER CLOTHING ITEMSBrief Introduction

Glacier clothing items are intended to provide climatic protection in snow bound and extreme cold regions. These items include personal clothing (poncho, jacket & trousers, undervest & pants, gaiters, gloves, cap and face mask); survival equipment (combination harness, mattress, rope climbing, survival blanket, cord avalanche, splint inflatable, and rescue bag) and habitat (tent glacier).

Salient Features

Special coated fabrics and thermal insulating materials have been developed to design these items in light weight and for optimal performance in sub-zero temperatures.

Splint Inflatable

Gaiters Glacier

Rescue Bag

Matters Glacier

Survival Blanket

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FACE MASK ANTIMINE,

UNIVERSAL TYPE

The Face Mask Antimine Universal Type is intended to

provide protection to the eyes and face against hitting

debris and minor fragments emanating from accidental

explosions of anti-personal mines during mine-

clearance operations.

• The face mask consists of a transparent

polycarbonate visor screen of 4 mm thickness

• Consists of two aluminum alloy side clamps, a cotton

webbing harness and accessories for attachment

• It is provided in one interchangeable common design to

suit Sikh troops for use in conjunction with turban and

Non-Sikhs for use with helmet combat fibre glass.

• The interchangeability is achieved by reversing the

direction of the side clamps while fixing the visor screen.

FACE MASK ANTIMINE, UNIVERSAL TYPE

Production Agency M/S Gee Pee IndustriesG T Karnal Road, Delhi.

M/S Mulk Raj & Company Jalandhar

AHSP DMSRDE, Kanpur

Production 12,116 Nos. of face masks antimine costing 120 lakhs have been supplied to Army.

Production Agency M/S NCFD, Kanpur

AHSP DMSRDE, Kanpur

Production More than 1600 suits costing 156

lakhs have been produced and

supplied to Army.

BLAST PROTECTION SUIT

Blast Protection Suit (BPS), has been developed for mine-

clearing operation. The suit provides comfort, mobility, and

protection against the blast of APNM-M14 mine.

• The BPS consists of hard armour panels (HAPs) and

soft armour quilts (SAQs)

• It is made up of lightweight advanced composite

materials

• The total weight of BPS is 6.5 kg approx.

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BOOT ANTIMINE - MK-1

(Specification No: CD 8430/000750)

Boot Antimine MK-I provide protection to leg / foot

against the blast of Antipersonnel non-fragmentation

mine during de-mining operation.

Salient Features

• The weight of boot is 5.0 kg per pair

• The boot is used with the overboot fabricated Kevlar

and the disruptive cotton stitched to provide extra

protection to foot injury

• The soldier can safely encounter accidental

antipersonnel Mine blast and suitable for any terrain

for demining operations

Production Agencies Ordinance Equipment Factory, Kanpur

AHSP DGQA, New Delhi

Production 3446 pair of Boots Antimine MK-1 costing 82 lakh have been supplied to Army

FOOD CONTAINER PLASTIC

5.5 LTR

Food container plastic 5.5 liter has been developed to

replace Food Container 4.5 liter being used by Army. The

warm food is supplied in these food containers to the

service personnel posted at high altitudes. The outer

body is made from HDPE, inner body from

polypropylene, and insulation by rigid polyurethane

foam in-situ to provide improved insulation and

lightweight.

• Keeps food warm for 4-6 h at -20°C temperature

• Stainless steel Katordan and lids used with sturdy

clamps

Production Agencies M/S Bajaj Engg & Consultant, Bahadurgarh

M/S Net Plast Ltd., Kanpur

M/S Vijay Aluminium, Kanpur

M/S Ajit Chemicals, Kanpur

M/S Pukharaya Industries, Kanpur

M/S Krishna Industries, Mumbai

AHSP DMSRDE, Kanpur

Supply of item 28930 Food Containers costing Rs.9.89 Cr. has been suppplied.

FOOD CONTAINER PLASTIC 5.5 LTR

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Production Agency M/S MKU Pvt. Ltd., Kanpur.

M/S Gee Pee Industries, G T Karnal Road, Delhi.

AHSP C-TEC (DIITM) (Directorate of Indust r ies In ter face and Technology Management)

Production 4333 Anti-riot Helmets casting 303 lakhs have been supplied to para-military forces.

ANTI-RIOT HELMET

Anti-riot Helmet has been developed for protection

from head injury when fighting against mob attacks.

The weight is 1.0 kg with ballistic resistance to 0.38"

pistol bullet from 4.6 m distance. The inner liner is

provided with shock-absorbing material which allows

air circulation and provides comfort. The three-point

chin anchorage system is provided for easy handling

when not in use.

ANTI-RIOT SHIELD

Anti-riot Shield has been developed to provide

adequate protection to the personnel engaged in riot-

control activities. It is designed from tough material to

provide full protection against brick batting, stone hits,

lathi blows, and knife attacks. The shield is fabricated

from polycarbonate sheet by thermoforming to

specified contour at different temperatures and

pressures. The shield is developed from transparent

material to provide better view when in operation.

Material Polycarbonate Sheet 4mm thick of 70 cm curvature

Size 90 cm x 60 cm

Weight 3 kg

Fitting Mild steel handle with PVC sleeve

Production Agency M/S Anjani Thermoformers, Noida

M/S Navdeep Polymer Ahmedabad

AHSP C-TEC (DIITM)(Directorate of Industries Interface and Technology Management)

Production 34258 number of Anti-riot Shields costing 555 lakhs have been supplied to para-military forces.

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DYNAMIC SEALS FOR NOZZLE HYDRAULIC ACTUATOR ASSEMBLY OF KAVERI ENGINE

Title / nomenclature Dynamic seals for nozzle hydraulic actuator assembly of Kaveri engine

Year of development 2012

Area of application Elastomeric and thermoplastics seals are intended to be used to control the leakage between

the annular space of shaft and housing

Present status of Accepted by user (GTRE, Bengaluru)

product/technology

Specifications Service conditions of hydraulic actuator for which polymeric seals were developed

(General)

2 • Maximum pressure 394 kg/cm

o • Fluid temperature 130 C

o o • Ambient temperature +150 C to -55 C

• Actuation velocity (max.) 60 mm/s

• Full stroke of actuator 90 mm

• Duty cycle 30,000 full stroke

• Fluid Turbonica (MIL-L-23699)

Three types of thermoplastic materials and their provisional clearances (validity up to

November 2014) to be used for development of seals, have also been carried out.

a)Provisional approval no. RCMA(Knp)/PC/55 dt. 24/05/2011 issued for PTFE(plain) material

b)Provisional approval no. RCMA(Knp)/PC/56 dt. 24/05/2011 issued for PTFE (composite) material

c)Provisional approval no. RCMA(Knp)/PC/57 dt. 24/05/2011 issued for PEEK (composite) material

Suitability for civil Since, hydraulic control system is very common in civil as well as in military applications

as well as military so it can be used in both applications subject to the change of design of seals as per

application desired system requirement.

'O' ring

Scraper seal

Elastormer seal(DMS-FE-75)

Sealing ring (PTFE composite)

Retainer ring - I(PTFE emposite)

Retainer ring - II(PEEK composite)

Scraper seal(DMS-FE-75)

'O' ring(MDS-FE-75)

Scraper seal fittedwith 'O' ring

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HIGH TEMPERATURE SEALING SYSTEMS FOR EJECTOR SHUT-OFF VALVE ASSEMBLY OF LCA

Title/nomenclature High temperature sealing system for Ejector shut-off valve assembly of LCA


oArea of application High temperature seals can work effectively up to 600 C where no lubricant media or

polymeric materials can withstand. These seals can run under dry condition with low

coefficient of friction

Present status of Accepted by user (ADA, Bengaluru)product / technology

Specifications Material properties of carbo-graphite material (Aero-III) used in the development of (General) high temperature seals / bearings

Property Unit Spec. data

3 Apparent density gm/cm 1.80

2 Transverse strength kg/cm 564

2 Compressive strength kg/cm 1550

Hardness Scleroscope 80

Temperature limit °C 650

-6 Thermal expansion mm/mm/ C x 10 5.2

Thermal conductivity W/m.K 17

Suitability for civil as well These seals / bearings are suitable for military applications onlyas military applications

Relief valve bearing

Piston rings

Piston ring

Thrust bearing

Upper bearing

Flap ring

Lower bearing

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CARBO-GRAPHITE SEGMENTED SEALS FOR

GEAR-BOX ASSEMBLY OF KAVERI ENGINE

Seal No. 12232

Seal No. 12236

Seal No. 12233

Seal No. 12917

Title / nomenclature Carbo-graphite segmented seals for Gear-box assembly of Kaveri engine


Area of application Carbo-graphite segmented seals can work effectively up to 18,000 rpm with high

capacity of compressive load-bearing capacity. These seals can run under dry

conditions with low coefficient of friction

Specifications (General) Carbo-graphite material (Aero-III) is provisionally type approved by RCMA, Kanpur, for

development of segmented seals for aero engines. [Provisional approval no.

RCMA(knp)/PC/1033 dt. 18/3/2008]

Suitability for civil These seals / bearings are suitable for military applications only as well as military application

Seal No. 12235

Seal No. 12918

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ELASTOMERIC INFLATABLE SEALS FOR

FAST BREEDER REACTOR – ROTATABLE PLUGS

Inflatable seal (radial) Inflatable seal (axial)

Title / nomenclature Elastomeric inflatable seals for Fast Breeder Reactor-Rotatable plugs


Area of application Inflatable seals for rotatable plugs are one of the most important elastomer

components used in fast breeder reactor. The large diameter seals are employed to

seal radioactive argon cover gas through the annular gaps between shells of

rotatable plugs

Specifications (general) Based on EPDM and fluorocarbon elastomer

Design flexibility

Present status of Accepted by user (Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam)product / technology Design and development of elastomeric inflatable seals for prototype fast breeder

reactor and fast breeder test reactors rotatable plugs have been developed

successfully

Suitability for civil These elastomeric seals can also be used for lifting of platform under precise as well as military controlled manner and able to provide the sealing in non-uniform gap dimensions applications

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ELASTOMERIC SEALS / GASKET FOR MINIATURE CRYO-COOLER

Title / nomenclature Elastomeric seals / gaskets for miniature cryo-coolers


Area of application To provide the leak-proof system in inert environment at elevated temperature

under static as well as in dynamic conditions.

o oService conditions Cryo-cooler operating temp. - 40 C to 70 C

End use Static (except ball end 'O' ring)

Shelf life 05 year

Present status of Accepted by user (SSPL, Delhi)product/technology

Suitability for civil These high performance elastomeric seals / gaskets are suitable for both civil as well as military as well as military applicationsapplications

CERAMIC-FACED COMPOSITE ARMOUR PROTECTION PANELS FOR

ADVANCED LIGHT HELICOPTER

Title / nomenclature Ceramic-faced composite armour protection panels for Advanced Light Helicopter (ALH)


Area of application To provide protection to aircrew and critical parts of the helicopter against 12.7 mm o o bullets at 84 and 6 hit from 300 m distance

Specifications (general) High strength and stiffness

Design flexibility

Present status of Accepted by user (HAL - RWR&DC, Bengaluru)product/technology Carriage and flight trials were conducted and found satisfactory. Flight test results

and armour panels are acceptable to Army. Type approval (no. 1438) for composite

armour panels for ALH issued by CEMILAC

Suitability for civil These high performance ceramic faced composite armour panels are suitable for as well as military military applications onlyapplications

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NUCLEAR SHIELDING PADS FOR BMP2 and 2K

Title / nomenclature Nuclear shielding pads for BMP2 & 2K


Area of application Used as shielding pads for protection against nuclear radiations (fast neutrons,

thermal neutrons, primary gamma rays and secondary gamma rays)

Present status of Accepted by user and introduced in BMP-2 & 2Kproduct / technology Army has floated the request for production of 2352 Nos. of NBC protection systems

for BMP-2 & 2K on Bharat Electronics Ltd., Pune

Specifications (general) Physico-mechanical properties of Polymer Compound DMS-PEC-I

Properties Test method Spec. data

3 Density, g/cm ASTM D-792 3.5 ± 0.25

Hardness, Shore 'A' ASTM D-2240 80 ± 5

2 Tensile strength, kg/cm ASTM D-412 50 (min.)

Elongation, % ASTM D-412 150 (min.)

Suitability for civil Nuclear shielding material / NBC pads are being fastened inside and outside of as well as military armoured vehicles and tanks. It will also be used inside the underground shelters. application

DMS-675-49-34K DMS-675-50-279 DMS-675-50119

DMS-675-57-299 DMS-375-58-141 DMS-675-50-120 DMS-675-50-121

DMS-765-50-2571 DMS-765-50-2571K DMS-675-50-123 DMS-675-50-124

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RTV SILICONE SEALANT(A Substitute for KLT-30)

Salient Features

• Appearance Transparent, Colourless liquid

• Kinematic viscosity 14-17 (cSt at 20ºC)

• Flash point 170ºC ( Open cup method)

• Pour point > -50ºC

• Silicone content 36.5-39.5%

• Moisture content >0.1%

• Operating temp. -50ºC to +150ºC

Non-corrosive towards mild steel, cast iron, stainless steel, copper, brass

and chrome-plated steel

Prospective Uses

The product is introduced in Services and are being used as recoil fluid in

73mm gun-mounted on ICVS

Status

Technology has been transferred to M/S Superna Chemical Pvt. Ltd.

Mumbai, and M/S Reliance Silicones Mumbai

10000 Liters' supplied to Army

Title / nomenclature Silicone Sealant for Wide Temperature Range (-60ºC to +300ºC) applications.

Salient Features Class of material One part RTV

Name of polymer Polydimethylsilicone

Cross linker Methyl tris (2-Butanone oximino) silane

2 Tensile strength 3.0 kg/cm minimum

Elongation 150-200 %

Hardness Shore 'A' 40-45

Thermal Stability -60ºC to +300ºC

Prospective Uses Polydimethylsilicone based RTV for anti-friting, vibration damping coating and joint

sealing requirements in service aircraft

Status CEMILAC approved

SUBSTITUTE OF RUSSIAN OIL PES-3

An Indigenous substitute of Russian oil PES-3

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HYDROPHOBISING LIQUID (SUBSTITUTE OF GOST 136-41)

A solvent dispersion of neutral RTV (two-pot condensation type) has

been developed using silicone resin and a tetra functional crosslinker.

Salient Features

Appearance Clear transparent liquid

Density at 27ºC 0.849 g/cc

Viscosity in cP 5.0

pH 7.6

Shelf life 6 months

Prospective Uses

A formulation for preventing ingress of moisture during overhauling

of service aircraft components and engine

This product is also water repellant for phosphated steel surfaces

and wind screen of aircraft

Status

Introduced in Services

Technology transferred to M/S Iftex Oil & Chemical Pvt. Ltd.

Mumbai-59

INDIGENOUS SUBSTITUTE OF AC-9 POLYMER

Developed as high temperature resistant coating material based on

methylphenylsilicone resin in lieu of Russian Gost AC-9 polymer

Salient Features

Appearance Green homogenous liquid

Viscosity (Ford cup no. 4 at RT) 36 s

Finish Green smooth & semi glossy

Resistant to heat No crack or blister appeared after0 exposure at 300 C for 5h

2Impact strength 25 Kg/cm

Salt spray test No corrosion observed after 24 h

Prospective Uses Coating on fairing nose and spinner

of R11, R25 and R29B aero engines

of MIG series aircraft

Status Introduced in service by HAL

Koraput in lieu of GOST AC-9 polymer

Over 200 Kg supplied to HAL, Koraput

GREEN COMPOSITION DMS-ACD

Equivalent to Russian OC-11-2009; As per specification No. TY84-725-78]

Salient Features Appearance Green liquid

Viscosity (Ford cup no. 4 at RT) 18-22 s

Non volatile content 45 % (min)

Scratch hardness of film (min) 0.75 Kg

Finish Matty

2 Impact strength 25 Kg/cm

Adhesion of film To pass on bending

Drying schedule 1 h

Air dry

at 200ºC 3 h

at 300ºC 1 h

Bending of film over mandrel 1mm

Appearance Green liquid

Viscosity (Ford cup no. 4 at RT) 18-22 s

Non volatile content % (min) 45

Prospective Uses Development of high temperature resistant coating material based on

methylphenyl silicone resin for treating thread of wire guided missiles

Status Three successful laboratory trials done by BDL Hyderabad

Sample sent to BDL Hyderabad for field trials

Ref: IND:BDL/BG/INVAR INDG/66 dt. 10.11.2009

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SYNTHETIC CAMOUFLAGE NET FOR SNOW BOUND AREA

Use: Protection to military equipment, vehicles & troops against visual and UV detection devices in snow bound area.

Characteristics

• FR treated nylon twine net structure with garnishing of ionised PVC coated polyester fabric

• Colour combination matches with background

• Adequate mechanical properties

• Enhanced usage life

• Low water absorption (< 10%)

• Extendable size for any objects by joining the modular nets

PRODUCTS DEVELOPED AND UNDER ACCEPTANCE PROCESS

SYNTHETIC CAMOUFLAGE NET FOR VISUAL AND NIRUse: Protection to military equipment, vehicles & troops against visual, binoculars & night vision detection devices in green belt area and desert terrain.

Characteristics

Two different terrains: Green belt & desert terrain

• Colour combination matches with background

• Adequate mechanical strength

• Enhanced usage life

• Low water absorption (< 10%)

• Extendable size for any objects by joining the modular nets

BULLET-PROOF JACKET

(MEDIUM SIZE, DMSCP1)

The bullet proof jacket (BPJ) is modular in design which

consists of soft armour panel (SAP) and hard armour panel 2(HAP). SAP covers an area of 4825 cm which includes front,

back, groin, neck and collars of body.

SAP defeats 9 mm SAF carbine from a distance of 5 m. HAP 2covers area of 3410 cm which includes front, sides, back, groin

and throat of body. Front HAP in conjunction with SAP protects

the body from AK-47 (MSC & KF) and SLR ball ammunition

whereas back, groin, and sides HAPs in conjunction with SAP

protects AK-47 (MSC) and SLR ball ammunition from a distance

of 10 m. Throat HAP without conjunction with SAP protects AK-

47(MSC) and SLR ball ammunition from a distance of 10m. BPJ

shows Trauma 25 mm with minimum inter-shot Distance 51

mm. Maximum weight of the jacket with all upgrades is 10.4 kg.

The BPJ has detachable pockets with flaps which can house

two LMG Magazine, two Grenade, three Rifle Magazines,

one Radio set as per convenience.

Status

• Bullet proof jacket has evaluated at TBRL, Chandigarh

• Bullet proof jacket is ready for transfer of technology

and Users' trials.

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BULLET-PROOF VEST(MEDIUM SIZE DMSVIP)

Salient Features

• The BPV consists of soft armour panel (SAP)

2• SAP covers an area of 3800 cm which includes

upper torso of the body

o• BPV gives 360 protection to upper torso of the body

from 9 mm SAF Carbine

• The BFS (trauma) received will be < 25 mm

• SAP defeats 9 mm SAF carbine from a distance of 5 m

• Total weight of bullet-proof vest is less than 2.5 kg

Status

• Bullet proof vest is ready for transfer of technology

and users’ trials

BULLET-PROOF JACKET

(MEDIUM SIZE, DMSFITE)

Light-weight Bullet-proof Jacket (BPJ) has been

developed which meets all requirements of GSQR 1095.

Salient Features

• The BPJ is modular in design which consists of soft

armour panel (SAP) and hard armour panel (HAP)

2• SAP covers an area of 4825 cm which includes front,

back, groin, neck and collars of body

• SAP defeats 9 mm SAF carbine from a distance of 5 m

2• HAP covers an area of 1500 cm which includes front,

back of body

• The HAP in conjunction with SAP protects the body

from AK-47 (MSC) and SLR ball ammunitions from a

distance of 15 m

• The BFS (trauma) received will be <44 mm

• Total weight of jacket (including two hard armour

panels) is 5.5 kg

Status

• Bullet-proof jacket is ready for users' trials.

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SEALING KIT FOR RECOIL SYSTEM OF 155 MM BOFORS GUN

Title/nomenclature Sealing kit for recoil system of 155 mm Bofors gun


Area of application Indigenous sealing kit for recoil system, consists of 43 types of components based

on elastomeric, thermoplastic and metallic materials are being used to resist the

leakage of recoil fluid under static as well as dynamic conditions.

0 oService conditions Operating temp.erature - 40 C to 120 C

End use Dynamic

Shelf life 05 year

Present status of Indigenous sealing kit has been qualified in fitment trails and firing trials are in product /technology process under different topological conditions in association with CQA(W),

Jabalpur.

Suitability for civil The combination of elastomeric, thermoplastic, and metallic components are very as well as military common in civil as well as military applications so it can be used in both applications applications subject to the change of design of seals as per desired system

requirement

Sealing ring

Elastomeric seals / 'O' rings

Quad ring Scraper Seal 'O' ring

Bearing ring Piston slide Piston guide

Theromoplastics seals / rings

MICROPOROUS THERMAL INSULATION AND IMPACT SHOCK-ABSORBING MATERIALS TO PROTECT MEMORY MODULE OF DFDR (DEPLOYABLE FLIGHT DATA RECORDER) FOR THE INDIAN NAVY

METAL-BONDED ELASTOMERIC OIL LIP SEALS FOR

TRANSMISSION GEAR BOX ASSEMBLY (ALH A/C)

Title /nomenclature Metal-bonded elastomeric oil lip

seals for transmission gear box

assembly (ALH A/C)


Area of application Oil lip seals are used to prevent

the leakage of oil through

rotating shaft surface

Service conditions B a s e d o n N i t r i l e a n d

Fluorocarbon elastomer

Present status of Accepted by user - HAL

product/ technology (RWR&DC), Bengaluru.

Title / nomenclature Microporous thermal insulation and impact shock-absorbing materials to protect

memory module of DFDR (Deployable Flight Data Recorder) for the Indian Navy

Area of application DFDR system provides the functionality of a flight data recorder, a cockpit voice

recorder, and an emergency locator transmitter all combined in one system

Present status of DFDR has been designed and developed in association with HAL-Korwa, IIT- product/technology Kanpur, and DMSRDE, Kanpur. Under this prestigious programme, DMSRDE is

providing the thermal insulation to protect the memory card under severe test

conditions. Prototype DFDR units are ready for evaluation of their performance as

per TSO-C124 (a) specification

Specifications (general) TSO-C124 (a) specification

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CARBON NANOTUBE POLYPROPYLENE COMPOSITE FIBRES

Aim

• To develop textile grade composite fibres using carbon nanotubes

• Potential advantages

• Increased tenacity

• Improved modulus

• Conductivity

• IR camouflage

CARBON NANOTUBES

MWCNT, Iljin, Korea

SWCNT, Carbolex, USA

MWCNT, DMSRDE

SPHERULITE GROWTH

100m

a

Pure PP

100m

b

PP/CNT composite

0

1

2

3

4

5

6

7

0 5 10 15 20 25

Elongation (%)

Te

na

cit

y (

g/d

)

DMSRDE

Iljin

Carbolex

Pure PP

Process Parameters

• Melt compounding 0• 230 C/ 50rpm/ 20min

• 0.5 wt % of CNT in PP0• Melt spinning (200 )

• Draw ratio: 8

PP Filament PP/CNT Composite Filament

MECHANICAL PROPERTIES

Sample marked Elongation(Fmax)

‘%’

Max force‘g’

Linear density‘denier’

Tenacity‘g/den’

Modulus‘g/den’

Processed PP 22.96 78.22 15.27 5.17 49.80

PP/MWNT (LIJIN) 20.42 85.63 15.17 5.73 60.14

PP/MWNT (DMSRDE)

18.34 96.06 16.84 5.73 60.69

PP/SWNT CARBOLEX

20.94 73.17 13.94 5.33 48.49

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INHERENTLY COLOURED ANTI-MICROBIAL FIBRE USING SILVER NANOPARTICLES

Features

• Inherent antimicrobial textile grade poly-acrylonitrile fibre

• Colour spectrum from red to blue

• Antimicrobial property more than 90 % against gram +ve and –ve bacteria

• No change in mechanical properties

ACRYLIC FIBRES CONTAINING Ag NANOPARTICLES

a b c d e

a) PAN/ 0% Ag b) PAN/0.6% Ag c) PAN/ 0.3% Ag d) PAN/ 0.6 % Ag e) PAN/ 1.9 % Ag TEM image of Ag nanoparticles in fibre

ANTIBACTERIAL ACTIVITY

UV-Vis spectra of various PAN fibres containing Ag

Against E.Coli.

a) PAN/ 0 % Ag b) PAN/ 0.3 % Ag c) PAN/ 0.6 % Ag d) PAN/ 1.9 % Ag

Ag Content Bacterial Reduction Percentage

% Escherichia Coli S taphylococcus Aureus

0 52 29

0.3 54 36

0.6 56 43

1.9 94 92

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BIOELECTRODESDevelop dry electrodes for measuring biopotentials (ECG,EEG etc) for long term and remote health monitoring of

service personnels

Current technology: Gel based disk electrodes

Drawbacks: Gel drying and itching problem. Not suitable for long term monitoring

Design requirements: To penetrate the outermost layer of skin(SC) and protrude as much as possible without

harming the dermis

Approach: Gold coated biocompatible polymeric pillars fabricated using UV Maskless lithography process.

Design Constraints

Parameter(Pillar features)

Design Goal Design Achievements

Length 20 µm ‐ 120 µm Upto130 µm

Base diameter 10 µm ‐ 35 µm 25 µm

Top diameter Lowest possible Upto1 µm

Pitch 2*Length Achieved in all cases

Fabrication steps:

Substrate (PET sheet/ITO coated glass)

UV maskless Lithography

Coating metallic material

Holes filled with conducting material

Conducting wires

Rotated by

90o

First Cycle

Second cycle

DC Plasma

Important Features :

• Economical, ergonomic design

• Flexible substrate utilized for body contour matching

• Effective utilization of UV Maskless lithography to give conical pillars

• Back exposure and T-Topping effects utilized to get conical shape

• Novel in terms of material and approach

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Title / nomenclature Elastomeric Seals for Damper Unite and Subtainer Row of Pichora Missile


Three types of elastomeric seals based on

nitrile [DRL(M)A4] and fluorocarbon [DMS-

FE-70] rubber compounds have been

developed and assembled with damper units

and well subjected to performance evaluation

at 7 BRD, Airforce Station, Tughlakabad,

Delhi, and have been found satisfactory

Piston ring(DMS-FE-70)

'O' ring - DRL (M) A4

Damper Unit

Sustainer Packing Ring

PolymerComposite

EPDMrubber

Sustainer packing rings have been developed

successfully based on glass fibre-phenolic

resin composite and EPDM rubber [having

microcell structure]. Composite and

elastomeric components are bonded by

structural adhesive (CR-RP 150).

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Technology Focus focuses on the technological developments in the Organisation, covering the products, processes and technologies.

B. Nityanand B. Nityanand

ch- fuR;kuan

Phuldeep Kumar

Qwynhi dqekj

Sanjay KatareDipti Arora

Editorial Asst.

nhfIr vjksjklaikndh; lgk;d

lat; dVkjs

23902527; 23902531

; [email protected]

23902527; 23902531

; [email protected]

ELASTOMERIC SEALS FOR DAMPER UNIT AND SUBTAINER RING OF PECHORA MISSILE

http://www.drdo.gov.in/drdo/English/index.jsp?pg=techfocus.jsp http://www.drdo.gov.in/drdo/English/index.jsp?pg=techfocus.jsp

technology focus vol. 22, issue 5 october 2014

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