RCS meaning in Space Science ?

Answer: What is Reaction Control System mean?

A reaction control system (RCS) is a spacecraft system that uses thrusters and reaction control wheels to provide attitude control, and sometimes propulsion. Use of diverted engine thrust to provide stable attitude control of a short-or-vertical takeoff and landing aircraft below conventional winged flight speeds, such as with the Harrier "jump jet", may also be referred to as a reaction control system.

An RCS is capable of providing small amounts of thrust in any desired direction or combination of directions. An RCS is also capable of providing torque to allow control of rotation (roll, pitch, and yaw).

Reaction control systems often use combinations of large and small (vernier) thrusters, to allow different levels of response. Spacecraft reaction control systems are used for:

attitude control during re-entry;stationkeeping in orbit;close maneuvering during docking procedures;control of orientation, or 'pointing the nose' of the craft;a backup means of deorbiting;ullage motors to prime the fuel system for a main engine burn.

Because spacecraft only contain a finite amount of fuel and there is little chance to refill them, alternative reaction control systems have been developed so that fuel can be conserved. For stationkeeping, some spacecraft (particularly those in geosynchronous orbit) use high-specific impulse engines such as arcjets, ion thrusters, or Hall effect thrusters. To control orientation, a few spacecraft, including the ISS, use momentum wheels which spin to control rotational rates on the vehicle.

reference

Full Form	Category
Rensselaer Computing System	Academic & Science
Recombinant Congenic Species	Academic & Science
Research Collaboration System	Academic & Science
Resilient Composite System	Academic & Science
Rockbridge Choral Society	Academic & Science
Rural Clinical School	Academic & Science
ReAgent Chemical Services	Academic & Science
Rochester	Airport Code
Reconstruction Companies	Banking
Registar of Co-operative Societies	Banking
Random Capitalization Syndrome	Banking
RCM Strategic Global Government Fund, Incorporated	Business
Ryan Computer Services	Business
Residence and Catering Services	Business
Roof Consulting Services, Inc.	Business
Real Communication Solutions	Business
The Royal College of Surgeons of England	Business
Real Company Stuff	Business
Retail Credit Solutions	Business
Ross Career Services	Business
Reactive Chemical Species	Chemistry
Reading, Consultation, and Study	Community
Residential Classification Scale	Community
Residential Classification Scheme	Community
Rockford Christian School	Community
Red Crescent Society	Community
Radcliffe Choral Society	Community
Red Crescent Societies	Community
Rochester Catholic Schools	Community
Russellville City Schools	Community
Rockingham County Schools	Community
Roxboro Community School	Community
Retirement Community Specialists	Community
Radio Conference Subcommittee	Community
Richmond Community Schools	Community
Redwood Christian Schools	Community
Rochester Community Schools	Community
Roanoke County Schools	Community
Rutherford County Schools	Community
Religious Community Services	Community
Rantoul City Schools	Community
Reloadable Control Storage	Computing
Radio Communications System	Computing
Remote Computer System	Computing
Revision Control Software	Computing
Record Size	Computing
Realtime Control Systems	Computing
Remote Console	Computing
Rate Control Scheme	Computing
Return Channel System	Computing
Resource Construction Set	Computing
Reference Color Space	Computing
Remote Computing Service	Computing
Rochester Computer Society	Computing
Raytheon Cyber Services	Computing
Roller Coaster Syndrome	Computing
Roll Control Suspension	General
Robust Cargo Suspension	General
Ride Control System	General
Realtime Control System	General
Runflat Component System	General
Radial Clutch Master Cylinder	General
Ratio Click System	General
Retro Classics Stuttgart	General
Ride Control Suspension	General
Racing Clutch System	General
Radio Cross Section	General
Road Calibration Suspension	General
Rain City Subies	General
River Cities Speedway	General
Riverfront Camaro Show	General
Rear Coil Spring	General
Roadster Club Scandinavia	General
Race Car Show	General
Red Cedar Speedway	General
Reduction Catalytique Selective	General
Really Crappy Support	General
Red Cherry Shrimp	General
Report Control Symbol	General
Rich Communication Services	General
Remote Control System	General
Ravena Coeymans Selkirk	General
Representative Child Sponsorship	General
Records Control Schedules	General
Rich Communications Services	General
Requirements Computation System	General
Reasonable Cleaning Services	General
Rack Correction System	General
Refrigerated Construction Service	General
Renaissance Cooking Systems	General
Ray Cammack Shows	General
Rich Communication Suite	General
Rapid Convenience Surveys	General
Rich Communications Suite	General
Recovery Control System	General
Rich Communication Service	General
Really Contrived Story	Governmental
Records Control Schedule	Governmental
Regulations Coordination Staff	Governmental
Retirement Confidence Survey	Governmental
Replacement Cost Study	Governmental
Revision Control System	Information Technology
Relational Calculus Subset	Maths
Relative Configuration Space	Maths
Respiratory Care Services	Medical
READ classification system Informatics	Medical
Red Cell Suspension	Medical
Repeat Caesarean Section	Medical
Registered Cardiac Sonographer	Medical
Reticulum Cell Sarcoma	Medical
Royal College of Surgeons	Medical
Respirable Crystalline Silica	Medical
Radar Cross Section	Military and Defence
Rudder Control System	Military and Defence
Regimental Combat Support	Military and Defence
Remote Cache Server	Networking
Resource Control System	Networking
Real Compton Scattering	Physics Related
Repubblica Comunista Salzese	Regional
Rpg Creation System	Softwares
Reaction Control System	Space Science
Radio Cluster Server	Telecommunication
Real Communication Solution	Telecommunication