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LIMITED LIABILITY COMPANY

"RESEARCH AND PRODUCTION ENTERPRISE "LTU"

LLC "RPE "LTU"

Available scientific, technical, technological and production capabilities (services) of the company

 

General information about the company

Established: 2009

Employees: 30 (incl. 10 juniors), including:

  • Prof., Dr. - 2 persons
  • corresponding members of National Academy of Science of Ukraine (scientific consultants) - 2 persons
  • Ph.D. - 3 persons
  • Ph.D. students - 3 persons

 

Registered at European Commission Identification Service - PIC # 948418083

Registered supplier for European Nuclear Research Organization, CERN (Switzerland)- TEC674

Registered supplier for GSI Helmholtz Center for Heavy Ion Research (Germany) -215188

 

Main directions of activity

Research, development, contract design and manufacturingflexible and flexible-rigidprinted circuit boards, printed units and electronic modules, including:

  1. Research and experimental development on aviation and space engineering, for radiation and medical instrumentation.
  2. Manufacturing electronic modules on flexible and flexible-rigid boards, production of flexible connecting cables and power cables for detector systems, control systems and information processing in high energy physics and nuclear medicine experiments.
  3. Manufacture of space and terrestrial solar modules and solar arrays.
  4. Manufacture of electric lighting equipment, including using LED devices.

Leading experts of the company have considerable scientific and technical experience (1995 - 2019) in:

  • development of technology and organization of production of silicon solar cells (SC) for solar arrays (SA) for ,,Micron” spacecraft
  • development of technology and organization of production of solar arrays based on single-junction GaAs solar cells and rigid carbon-fiber panels (EgypSat-1, MC-2-8, Sich-2-1, Mikrosat spacecrafts)
  • development of technology and organization of production of solar arrays based on triple-junction GaAs solar cells and rigid carbon-fiber panels (YuzhSat, GS-1 spacecrafts)
  • development and organization of production (Ukraine, Finland, France, Italy) of microelectronic modules during creating Inner Tracking System of the ALICE experiment at Large Hadron Collider (CERN, Switzerland)

 

Production and experimental base

Total production area ~ 500 m2. LTU LLC has 5 main divisions:

  • Development department;
  • Department of production of rigid printed circuit boards, flexible and flexible-rigid boards;
  • Department of assembly of microelectronic devices and solar arrays;
  • Machining department;
  • Testing and control department.

Production sites are equipped with modern technological equipment. Assembly siteis equipped by clean work places with seventh level of cleanliness (not more than 352 particles / cub.dm; 0,5 μm in size – ISO 14644-1: 2009). Work places are equipped by systems of ventilation, vacuum, compressed air and air conditioning.

Available scientific, technical, technological and production capabilities (services) of LLC "Research and Production Enterprise "LTU"

Capability

(service)

Description

Main characteristics of existing technologies and equipment

1

Space engineering (solar arrays, flexible film heaters etc.)

 

 

1.1

Space solar arrays on rigid carbon-fiber panels for small and ultra-small spacecrafts

Chosen materials and accessories for solar arrays of modern and promising spacecraft have a good flying history, fully meet the requirements of ESSS-E-CT-20-08C and ECSS-Q-70-71A standards. Heterojunction CICs on triple-junction 3G30A solar cells (efficiency 30% or more from Azur Space) are acceptable for use on all functioning orbits of space crafts

Lifetime -                     5-10 years

BOL specific output power by area - 280,0 - 310,0 W/m2

EOL specific output power by area -> 270,0 W/m2

Specific mass - 2,6-2,8 kg/m2

BOL specific output power by mass  up to 120,0 W/kg

EOL specific output power by area- up to 110,0 W/kg

Specific mass of panel for solar array - up to 1,4 kg/m2

1.2

Conventionally flexible solar modules on polyimide carriers

 

Conventionally flexible modules on aluminum-polyimide carriers provide significant reduction in deformation in solar modules, improvement of thermal parameters of solar cells, simplifying positioning of solar cells in modules, minimize gaps between neighboring solar cells and increase fill factor of solar modules, avoid corrosion of welded Al-Al joints, reduce degradation of electrical performances and increase reliability in operation both solar modules and solar arrays.

Flexible solar module based on single- or double-junction GaAs solar cells:

- thickness ~ 250 μm

- mass ~ 10-12 g

BOL specific output power:

- by area ~ 260 -300 W/m2

- by module weight ~ 400 - 450 W/kg

Flexible solar module based on triple-junction GaAs solar cells:

- thickness ~ 250 μm

- mass ~ 10-12 g

BOL specific output power:

- by area >400 W/m2

- by weight of module >500 W/kg

1.3

Polyimide film electric heaters

Polyimide film electric heaters based on foil made of conductive resistive materials, including: nickel, nickel and other resistive alloys for active thermoregulators, designed to maintain specified temperature ranges of individual elements of spacecrafts.

 

Life time - 10-15  years

Effective area- from 10 up to 150 cm2

Weight to 0,1 kg

Operating voltage 24-34 V

Resistance – from 50 to 190 Ohm

Maximum thickness- up to 0,3 mm

Maximum power density –up to 6 W/cm2

2

Detector engineering (detector modules and their components)

 

 

2.1

Multi-sensor module on flexible commutation board

Module belongs to microelectronic devices both household and special purposes and can be widely used in the production of flat multicrystalline bare detectors on flexible-rigid multilayer carriers, including for particle detection systems and for monitoring the state of elementary particle flows in the Earth's outer space

Multi-sensor full-aluminum pixel detector module provides high range of performances for modern pixel detector systems:

- geometric dimensions - up to (250x50) mm

 - radiation length -

 not more than 0,1-0,2% X

- spatial resolution 5-10 um

- power consumption - 40 mW/cm2

At minimal possible mass and power consumption of the module.

2.2

Flexible multilayer printed power cable

 

Product refers to development and production of equipment based on microelectronics products both for household and special purposes and can be widely used in the production of particle detection systems, and is intended for the electrical supply of several electronic units or modules.

The multilayer flexible aluminum-polyimide printed power cable minimizes interference emission and voltage drop of printed power cable along its length, minimizes active and inductive cable resistances, as well as reduces dimensional and weight reduction,provides reliable electrical connection to multiple electronic units over length of the cable, not just at the end of the cable.

The cable has:

- dimensions - up to 1500 x40 mm

- thickness of aluminum layers-  30-100 μm

- thickness of polyimide layers - 15-20 μm

- thickness of protective polyimide layer - 40-50 μm

2.3

Special flexible and flexible-rigid aluminium-polyimide printed circuit boards

Circuits and commutation elements based on aluminum-polyimide adhesiveless dielectrics allow to decrease material budget and working volume of electronic modules with high density of information channels. Flexible and rigid board technologies offer many viable solutions, including promising solutions for creating spatial interconnections.

Technological level of production.

Circuits and cables with small traces:

- pitch of traces 45-60 μm

- width of traces 20-30 μm

- length 10-50 mm

- number of traces 128-1024 pcs

Connection cables:

- pitch of traces 100-200 μm

- width of traces 40-100 μm

- length up to 600 mm

- number of traces up to 512 pcs

3

LED lighting systems

 

 

3.1

Universal LTU Pro luminaires for outdoor and indoor lighting

Economy, safety and reliability throughout the service life. The ability to change the power, the color temperature and the angle of light opening allows us to offer solutions to problems of any complexity. The luminaires are suitable for lateral, overhead and suspended mounting on a support, bracket, wall or cable.

 

Power consumption 30 - 200 W

Luminous flux to 150 Lm

Light opening angle 30°, 60°, 90°, 120°

Color temperature 2700 – 6500 K

COB or SMD LED matrix

Color rendering index 80 CRI (Ra)

Warranty period 5 years

Service life 10 years

Degree of protection IP65

Input voltage, 220V

Operating temperature - 40...+ 50°C

Overall dimensions 270x190x150 mm

Weight, not more than 4 kg.

 

 

CONTACTS:

Director General Gennady Nikitsky

Tel.:+38(057) 720-42-48

info@ltu.ua. http:www.ltu.ua

First Deputy Director General - Chief designer Prof., Dr. Vyacheslav Borshchov

Tel/fax: +38(057)714 07 46

E-mail: Viatcheslav.borshchov@cern.ch

Limited Liability Company «Research and production enterprise «LTU» (LLC «RPE«LTU»)

office 102, 3 Novgorodska str., Kharkiv, 61145, Ukraine, www.ltu.ua, info@ltu.ua, tel.: +38(057)714-07-46, fax: +38(057)714-07-46.