n.a small rocket engine on a larger rocket or spacecraft that is fired to slow or alter its course

Retrorocket
Retrorocket
Retrorocket
Retrorocket-Assisted Parachute Inflight Delivery (RAPID) system study
Parachute-and-retrorocket landing system for vertical descent
Penetration of retrorocket exhausts into subsonic counterflows.
Low Altitude Retrorocket System (LARRS) - System overview and progress
Effect of retrorocket cant angle on ground erosion - A scaled Viking study
Analgesic effect of retrorocket Promethean on acute pain after fracture
Impact of Retrorocket Plumes on Upper-Stage Aerothermodynamics During Stage Separation
A parachute retrorocket system for low altitude airdrop of cargo andother special applications
A Initial Ignition Altitude for Retrorocket and its Random Deviation Analyzing
INVESTIGATION OF A RETROROCKET EXHAUSTING FROM THE NOSE OF A BLUNT BODY INTO A SUPERSONIC FREE STREAM