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 MAKS 2005 - International Aviation & Space Salon
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Cool gas low thrust rocket engine МД5

Cool gas low thrust rocket engine
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Photo Description
МД 5 is a low thrust rocket engine (LTRE) operating on gaseous nitrogen or air.
The thruster is designed to control attitude and to move an astronaut motion unit (AMU), also for precise station keeping of space vehicle (SV) in the space by commands provided by the control system (CS).
The thruster produces the rated thrust of 4.9 N value and is capable for the repeated starts-up of duration from 0.012 sec to 3,000 sec.
In the thruster there is a solenoid-operated valve (SOV) of 6PT.200-00 type, developed and fabricated by R&DIME. The SOV is a two-stage valve with the teflon sealing and is designed for supply and shut-off of
gas for thrusters nozzle. The valve h s a mass of 0.16 kg, a response time of not over 0.025 sec, a current consumption of not over 0.2 A at the voltage 34 V and temperature 20C.

At the delivery of voltage to the SOV contacts by command from CS the valve is opened. Nitrogen or Air enter the thruster`s nozzle and by outflowing from it, produce thrust of thruster. When the pressure in
the subsonic section of nozzle obtains 0.078...0.17 MPa, the pressure indicator in combustion chamber (CCPI) responds, its contacts close the circuits and the signal on a start-up of thruster enters CS.

The thruster is cut of by removing voltage from the valve`s contacts and in this case the valve is closed to stop the access of gas to the nozzle. The pressure in the nozzle subsonic section drops, the contacts of indicator, opening the circuits, supply the signal to CS on the thruster`s cutoff thruster МД 5 has a modification МД 5-01, where the CCPI is not available.
The duration of thruster`s run and pauses between its starts-up irf regulated by CS. The thruster to be supplied for customer doesn`t require adjustment and regulation.
The thermal condition of thruster is ensured by a contact heat transfer via the flange of thruster attachment to SV.
To the beginning of 1999 the thirty two (32) thrusters МД5 have ensured the successful fulfillment of AMU missions.
R&DIME possesses the stand, experimental, production bases, the scientific, engineering and designing potential, allowing to carry out scientific and research works and experimental-designing works on production of small-class engine in all the directions in interests of domestic and foreign companies. R&DIME conclude contracts on series-produced Low Thrust Rocket Engines and electrically actuated valves production and supply.
R&DIME offers to perform tests of large scale systems and technologies and also up to 3,OOOkN sustainer liquid rocket engines themselves and units of their supply systems with the LO,+LH2 (L methane) propellants.
   About company
   Main activity
Cool gas low thrust rocket engine
МД5
РДМТ08
Gas-Dynamic Igniter
ГДВВВ-185
Gas-Dynamic Igniters
Bipropellant low thrust rocket engine
РАМТ135А
PAMT500A/I
РДМТ12
РДМТ 50М
РДМТ 100А
РДМТ 135М
РДМТ 200 К
РДМТ 200А
РДМТ 200М
Reactive Control System Module
Reactive Control System Module
Cutter for thermal cutting of materials
100ЭР568.49
100ЭР568.55
Mass Flow Rate Stabilizers
Mass Flow Rate Stabilizers
Solenoid Valves for Engineering Industry
Solenoid Valves for Engineering Industry
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El: 77-6097 from 14 February 2002. Publishes since February, 3, 1997.