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1. Personnel Parachutes

1.1 Parachute Tactical Assault- Main (PTA-M)

Parachute Tactical Assault- Main (PTA-M) is static line deployed parachute. PTA-M is used to deploy the troopers from low altitude and to impart initial training.

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1.2 Parachute Tactical Assault- Reserve (PTA-R)

Parachute Tactical Assault- Reserve (PTA-R) is used along with PTA-M parachute. It is a manually operated parachute. PTA-R is reserve parachute used when main parachute malfunctions.

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1.3 Parachute Tactical Assault- Gajraj (PTA-G)

Parachute Tactical Assault- Gajraj is a free fall parachute used to deploy the troops from high speed aircraft like IL-76 AC.

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1.4 Ram Air 9 Cell Parachute

Ram Air 9 Cell parachute is used by paratroopers to reach pre-designated location by using its manoeuvring capability.

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1.5 Combat Free Fall (CFF)

CFF system enables paratroopers to jump from an altitude from 30,000 ft. from AMSL. It is used for deep penetration in enemy territory during war time or special mission as it has glide ratio of 3.3:1, besides, Safety Devices, Navigation System, Protective Clothing, Communication System, oxygen mask, etc.

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2. Aircrew Parachutes

Aircrew parachutes are designed to provide safe landing to the pilot in case of emergencies. This type of parachutes have been designed & developed for all types of fighter aircrafts available with Indian Defence forces.

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3. Brake Parachute

Brake Parachutes have been designed to provide adequate deceleration to bring the aircraft of different weight class to stop within specified landing speed in both normal and emergency conditions. Well proven single canopy brake parachute is designed to stop the aircraft, having landing weight varying from 9500 kg to 15760 kg, for normal landing at speed of 260 kmph and emergency landing speed of 310 kmph, respectively. Very stable twin canopies brake parachutes have been designed for aircraft landing weight varying from 21000 kg to 41000 kg, for normal landing speed of 260 kmph and emergency landing speed of 300 kmph, respectively.

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4. Recovery Parachute System

Recovery Parachute Systems are used for recovery the various types of payloads. The following Recovery Parachute Systems have been designed and developed by ADRDE to recover various types of payloads.

4.1 Lakshya Recovery parachute system

Lakshya Recovery parachute system is used to recover the Lakshya UAV safely on ground after completion of intended task.

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4.2 Nishant Recovery parachute system

Nishant Recovery parachute system is used to recover the Nishant UAV safely on ground after completion of intended task.

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4.3 Space Payload Recovery Parachute

Space Payload Recovery Parachute along with floatation system is capable of recovering space payload on the sea surface. The system is highly reliable and stable. The total mass of the parachute system is less than 15 kg and recovery payload is 500 kg.

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5. Armament Parachutes

Armament Parachutes are designed for delivery and trajectory control of bombs, land minelets, torpedoes, etc. while ensuring the safety of the aircraft delivering the same. Unicross parachutes designed for armament delivery are very stable and follow desired trajectory.

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5.1 Module Parachute for Prithvi warhead

These parachutes are used to reduce the velocity from 400 m/s to 100 m/s and stabilise the module sub munitions.

5.2 Bomblet parachute for Prithvi warhead

This parachute is used to reduce the velocity form 100 m/s to 40 m/s, stabilize and must hit the target at an angle of 90+10.

5.3 Unicross retarder parachute for tail unit (RTU)

This parachute is used to retard the velocities of Bomb from 291.7 m/s to 40m/s and hit the target with proper ricochet angle.

5.4 Parachute system for bombs - 81 mm illuminating Mk I Mortar, 51 mm illuminating Mortar, 81 mm illuminating Mk II Mortar, 105 mm illuminating Mk I IFG, 120 mm illuminating Mortar

The parachute is required to decelerate the forward velocity of illuminating candle and also to provide stabilisation and required rate of descent, so as to illuminate the target area for required duration during night operation.

5.5 Parachute system for tail unit no. TR 250

The parachute are used to retard the velocity of 250 kg bomb from 291 m/s to 40 m/s and hit the target with non-ricochet angle.

6. P7 Heavy Drop System

Heavy Drop System is used for Para drop of military stores (vehicle/ ammunition/ equipment) of 7 Ton weight class. The Heavy Drop (P-7) System for IL-76 Aircraft consists of a platform & parachute system. Parachute System comprises of 5 Main canopies, 5 Brake chutes, 2 Auxiliary chutes, 1 Extractor parachute. The platform is a metallic structure made up of Aluminium/steel alloys.

System has been developed successfully with 100% indigenous resources followed by user trials.

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7. Aircraft Arrester Barrier System

Aircraft Arrester Barrier System is a perfect blend of experience and technology to prevent Air Force flying losses. It offers safe and reliable arresting solutions for combat aircrafts during landing and take-off overrun.

Arrester Barrier system is available in two variants:

  • For 6 to 20 ton class aircraft
  • For 20 to 40 ton class aircraft

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8. Helinet For CHEETAH Helicopter

These Helinets are made of textile tapes and cordages which are primarily used for transportation by helicopters in underslung condition. Such nets for Chetak/Cheetah helicopters have been successfully designed and developed by ADRDE. These nets are also being used for transporting the LLLR radars developed by one of our sister lab LRDE.

The Heli-net can be used for carrying supply items such as food, medicines, clothing, water, fuel etc. underslung of the Helicopter. It can also be used in rescue/relief operations. The Heli-net has also been selected by Para-Military forces like CRPF, BSF for their LIC operations. LIC Directorate of DRDO HQrs is liaising with these agencies for the delivery of Heli-net to them.

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9. Inflatable Radome

Inflatable structure has been developed indigenously by ADRDE with an objective to serve as a shelter to provide controlled environment for effective and continuous functioning of expensive electronic and strategic systems for civil and military applications.

Inflatable structure consists of hemispherical envelope of coated fabrics with airlock tunnel, centrifugal air blowers, packaged, air conditioners, electrical control system and emergency generator.

The system is operational 24X7 and it meets the demanding high degree of reliability. High degree of reliability has been achieved using high quality components, adequate redundancy and state-of-the-art manufacturing and integration processes.

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10. Heavy Drop System 16T

ARDE ProductsA 16 ton capacity heavy drop system (HDS) consisting of a platform and a highly advanced system of parachutes to drop loads consisting of military stores such as vehicles (including BMP class), supplies and ammunition from IL76 heavy lift aircraft has been designed and developed with 100% indigenous resources and has been demonstrated for its paradrop capability. Three prototypes of the system developed by the Aerial Delivery Research and Development Establishment (ADRDE) have been realized and two successful drops meeting the performance parameters have been demonstrated. The system is an extension of technology developed by DRDO for 'P-7 HDS', the 7 ton capacity Heavy Drop System developed earlier and already accepted by Indian Army for induction.

 

 

Video : Heavy Drop System 16T

PRODUCTS UNDER DEVELOPMENT/DEPLOYMENT

1. Nakshatra

Recently, a project on design, development and realization of integrated aerostat surveillance system-medium size (38 m class) has been completed with following sub-systems:

  • AerostatBalloon
  • ActivePressure Control & Health Monitoring System (APC&HMS)
  • DataTransfer System
  • Winch& Mooring System
  • GasManagement System
  • PowerManagement System
  • GroundControl Station
  • COMINT

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2. Paratrooper Parachute Development Programme:

Under this programme, development of Tandem Combat Free Fall, Glider and High Speed AC have been successfully carried out.

2.1 Tandem Combat free fall Parachute Systems (TCFF)

ARDE ProductsTandem Combat Free Fall (TCFF) parachute system enables an instructor/expert skydiver to jump from an aircraft along with an untrained/student skydiver connected to him via harness. The instructor controls the whole jump from exit through free fall, piloting the canopy, and landing. The student needs only minimal instruction before making a tandem jump.

Tandem CFF systems use a drogue parachute, which is deployed shortly after leaving the plane in order to slow the free fall speed of two people, down equal to the free fall speed of single skydiver. This is necessary for proper and safe parachute deployment and also minimal g-loads during deployment of parachute.

2.2 Gliding parachutes System

Gliding parachute system or Para Glider is a non-motorized, foot-launched inflatable wing. It is easy to transport, easy to launch, and easy to land. The pilot will be clipped into a harness and oriented in a sitting position for maximum comfort. The pilot runs down a gentle slope and glides away from the mountain. With a gliding parachute, one actually fly likes a bird, soaring upwards on currents of air. It is 51 cells Ram Air Parachute which provide the forward speed / terminal velocity to paratroopers. It can be manoeuvre by paratroopers as per their wish. It can carry up to 85-105 kg payloads.

2.3 Parachute system for high speed aircraft (PTA- G2)

ARDE ProductsThe Parachute Tactical Assault Gajraj i.e. PTA (G2) is an advance version of existing PTA (G) personnel parachutes system. The proposed parachute system will enhance the capability of paratroopers in term of deployment velocity and deployment altitude. In existing parachute system the paratrooper can be deployed up to speed of 400 kmph keeping maximum shock value within permissible limit.

3. Akashdeep Medium class Aerostat

Under Akashdeep project, design & development of aerostat surveillance platform having net payload of 200 kg at 1 km AMSL has been successfully demonstrated with following sub-systems - Aerostat Balloon, Aerostat Health Monitoring System (AHMS), Data Transfer System, Winch & Mooring System, Gas Management System.

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Video : Akashdeep - Medium class Aerostat

4. Controlled Aerial Delivery System (CADS)

This system delivers the 500 kg payload material(using Ram Air Parachute duly controlled through its control lanyards) to the designated area within 100 meter CEP using GPS based Para flight control computer. The CADS 500 kg has also undergone trials at High Altitude Area like Leh, Yumthang, Sikkim and the technology has been demonstrated to the users successfully.

The laboratory is presently working on the similar system for 1 Ton payload capability and intends to extend it to 3-4 Ton payload.

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Video : Controlled Aerial Delivery System (CADS)

5. Unmanned Small Airship System

Recently, ADRDE is working on Unmanned Small Airship System. This will be an autonomous guided and controlled platform with manual override capability. The Airship would be made up of PU coated fabric and would be filled up with Helium gas. Other systems such as Flight Controller, On Board Flight Controller, Obstacle Avoidance & Warning System, Propulsion System, Fin Control Surfaces, Gondola, Landing Gear etc. would be mounted on to the Airship.

Unmanned Small Airship System can be used for coastline surveillance, coastal area monitoring and Civil Management, Disaster Management, monitoring of airports / vital installations, Intruder detection etc.

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6. Tactical Aerostat

A tactical Aerostat system with V/UHF payload has been designed by ADRDE and one prototype hardware is developed in a very short duration. This design was undertaken in response to Army's requirement of an Aerostat system which will be operating at 12000 ft plus height with the payload. The total Aerostat System including Gas Management and Ground Control, is transportable in hilly terrains of 2 nos. of 2.5T military vehicles. This Tactical Aerostat has undergone trial demonstration to users at Tawang in North-East successfully.

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MAJOR TECHNOLOGIES DEVELOPED

1. Textile Technologies-Overview

Technology Group (Textile Engineering) is involved in the development of high performance technical textiles, applied research and scientific studies to meet the requirements of all the ongoing and futuristic projects at ADRDE pertaining to Parachutes, Arrester Barrier Nets & Inflatables. Primarily, the group is engaged in the following areas:

  1. New textile product developments textiles for parachutes
  2. Development of coated & laminated fabrics for inflatables such as Aerostats, Airships, Radomes, Floats for helicopters & sea recovery missions, etc.
  3. UV and water resistant tapes for Arrester Barriers.
  4. Life estimation studies on fabrics, coated fabrics & narrow fabrics.
  5. Enhancement of functional properties of existing materials.

The key technologies and product that has been recently developed are:

Parachute Textiles:

  1. Lightest version of canopy fabric with 22 gsm, 25 kg/5cm breaking strength available worldwide.
  2. Seams and stitches of all types of parachutes are optimized.
  3. Heat Setting Technology: Nylon and polyester tapes and cordages of rigging lines are subjected to patented (Indian patent no. 250813) heat setting process that improves the elastic recovery and thereby life in terms of number of jumps.
  4. High performance very light weight narrow fabrics developed from Dyneema, Spectra, Kevlar, Vectran, Technora, etc.
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    Arrester Barrier Nets:

  6. Tapes and Webbings used in Arrester Barrier are given special UV resistant and water repellent finish to last for more than 04 years in extremely difficult environment.
  7. Coated and Laminated fabrics:

  8. Various versions of PU coated nylon fabrics for Aerostats of different sizes and variants of hull, fin and ballonet to meet requirements of project Akashdeep and Nakshatra. Various prototypes of PU coated fabric with optimized type of nano clay, carbon black and UV absorbers, various dispersion techniques and concentration done to improve UV resistance and gas barrier in PU coated fabrics.
  9. Three versions of PVC coated polyester fabric with required EM transparency, strength and weight for inflatable Radome has been developed.
  10. Tedlar and polyester film based laminated fabric having significantly improved life (approx. more than three times) over PU coated fabric has been developed recently.
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  12. Neoprene, Bromo-butyl and combinations of coated fabrics with nylon, polyester, para aramid and Vectran base fabrics for Floats for helicopters & sea recovery missions, etc.
  13. Special three end leno fabric and three end leno with rib stop base fabrics for lamination have been developed first time in the country with modifications in existing weaving machines.
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    Other textile related technologies:

  15. 11. A customized impulse heat sealing m/c for joining Tedlar based Laminated fabric with features such as sealing head with water jackets, controlled and specific temperature cycling, pressure, time, cooling cycle, etc., has been developed.
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  17. Unique inflation net for Aerostat developed that protects the balloon during inflation from any gust or wind.
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  19. A customized outdoor exposure rack with innovative features of variable loading using mechanical advantage and provision for angle adjustment to estimate life of inflatable materials in simulated conditions.

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2. FORJ & Tether for Aerostat

The Fibre Optic Tether is an electro-optic-mechanical load bearing cable with optical fibres which play the following roles in an Aerostat system:

  • Anchoring the Aerostat at desired altitude through ground winching system.
  • Electrical power supply to airborne electronics
  • Two-way data communication.
  • Low resistance path to ground for Lightning current.

Small diameter, high strength Aerostat tethers that minimize weight and drag are the design driver. The deployment and application conditions of tethers determine the details of conductor, insulation, and strength member design.

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3. Aerostat Health Monitoring System

AHMS is a vital sub system of Aerostat, it provides active aerodynamic shape maintenance of the aerostat during various phases of flight. By virtue of pressure sensors, air blowers and release valves, controller of AHMS regulates the air pocket in the ballonet of the aerostat to always maintain the desired aerodynamic shape of the aerostat at all times during flight and provides values of all health parameters continuously to the Ground Control Station.

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4. Hydrostatic Drive for Winch & Mooring System of Aerostat

ARDE ProductsHydrostatic drives are widely recognized as an excellent means of power transmission when variable output speed is required. They offer fast response, maintain precise speed under varying loads, and allow infinitely variable speed control from zero to maximum. Unlike other mechanical transmissions, hydrostatics have a continuous power curve without peaks and valleys, and they can increase available torque without shifting gears. Hydrostatic drive technology is used to develop winch and mooring system for medium size Aerostat whose purpose is to raise, lower and hold the balloon. It contains a pressure compensated, load sensing variable displacement axial piston pump, Hydraulic actuator, proportional valve bank and all required controls in one simple package. Such a system provides all the noted advantages of a conventional hydraulic system. It has been designed for raising and lowering the Aerostat at the speed of 75 m/minute at 3400 kgf load and it can sustain a load up to 10T load.

5. Heavy Drop Systems Technologies

5.1 Extraction Mechanism for Heavy Drop Systems

Heavy Drop Equipment (HDE) are used to paradrop military stores having heavy weights from the transport Aircraft. These stores are mounted on specially designed heavy drop platforms duly lashed and integrated with a set of parachutes.

Extraction technology has been realized by the successful development of special parachute (extractor) and Platform Fastening & Release Lock (PFRL), which work in combination to enable safe carriage and safe release of the paradrop store. Heavy drop platform is secured within the aircraft by PFRL during aircraft flight and operates with development of extractor parachute to enable safe separation of HDE on exit from the transport aircraft and successive deployment of multiplex parachute system. The technology to realize the hardware has been well-proven and duly certified to meet the airworthiness requirements for different types of HDEs.

5.2 Release Mechanism for Heavy Drop Systems

The technology for the release mechanism required to separate the parachute system from the HD platform on ground impact has been mastered. The mechanism known as Automatic Disengaging Unit (ADU) has also been successfully fabricated to meet the reliability & functional requirements of different types of HDEs. The provision of built-in delay for the activation of separation, in different denominations of time intervals, has also been catered using pyro-mechanical/mechanical devices. The design challenge in this technology was to ensure prevention of mid-air but positive separation after landing on the ground. These hardware are equipment specific.

5.3 Shock absorption Mechanism for Heavy Drop Systems

The air bag type shock absorption technology, though is conventional, but highly reliable during operation. In this technology, critical parameters for textile components as well as other components have been well-established to meet the requirements of 7 tons weight class of HDEs. However, for other HDEs, the shock absorber materials in the composite configuration of high-density foams/thermocole, in specific shapes have also been developed indigenously, which have been successfully proven for their effectiveness.

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