Editing Rolls-Royce Dart (section)

==Variants==
As well as the RB.53 designation each mark of Dart engine was allocated a [[Ministry of Supply]] (MoS) "RDa.n" number as well as Mk.numbers.
;RDa.1: Initial prototype engines – 1,250 shp plus 300lb residual thrust<ref>{{cite web |url=http://www.flightglobal.com/pdfarchive/view/1953/1953%20-%200371.html |title=gear box {{!}} strut gear {{!}} oil tank {{!}} 1953 {{!}} 0371 {{!}} Flight Archive |website=www.flightglobal.com |url-status=dead |archive-url=https://web.archive.org/web/20150519040405/http://www.flightglobal.com/pdfarchive/view/1953/1953%20-%200371.html |archive-date=2015-05-19}} </ref>
;RDa.2: Initial production engines
;RDa.3: {{convert|1,480|hp|kW|abbr=on|2}} estimated power – {{convert|1,345|hp|kW|abbr=on|2}} shaft power + {{convert|350|lbf|kN|abbr=on|2}} residual thrust at 14,500 rpm
;RDa.6: {{convert|1,670|hp|kW|abbr=on|2}} estimated power – {{convert|1,535|hp|kW|abbr=on|2}} shaft power + {{convert|350|lbf|kN|abbr=on|2}} residual thrust at 14,500 rpm
;RDa.7: {{convert|1,815|hp|kW|abbr=on|2}} estimated power – {{convert|1,630|hp|kW|abbr=on|2}} shaft power + {{convert|480|lbf|kN|abbr=on|2}} residual thrust at 15,000 rpm
;RDa.7/1: {{convert|1,910|hp|kW|abbr=on|2}} estimated power – {{convert|1,730|hp|kW|abbr=on|2}} shaft power + {{convert|470|lbf|kN|abbr=on|2}} residual thrust at 15,000 rpm
;RDa.7/2: {{convert|2,020|hp|kW|abbr=on|2}} estimated power – {{convert|1,835|hp|kW|abbr=on|2}} shaft power + {{convert|485|lbf|kN|abbr=on|2}} residual thrust at 15,000 rpm
;RDa.7 Mk 21: {{convert|2,099|hp|kW|abbr=on|2}} estimated power - used for [[Bréguet 1050 Alizé]]
;RDa.7/2 Mk.529: {{convert|2,100|hp|kW|abbr=on|2}} estimated power – {{convert|1,910|hp|kW|abbr=on|2}} shaft power + {{convert|495|lbf|kN|abbr=on|2}} residual thrust at 15,000 rpm
;RDa.10: {{convert|2,555|hp|kW|abbr=on|2}} estimated power – {{convert|2,305|hp|kW|abbr=on|2}} shaft power + {{convert|670|lbf|kN|abbr=on|2}} residual thrust at 15,000 rpm
;RDa.10/1: {{convert|3,030|hp|kW|abbr=on|2}} estimated power – {{convert|2,750|hp|kW|abbr=on|2}} shaft power + {{convert|750.4|lbf|kN|abbr=on|2}} residual thrust at 15,000 rpm
;RDa.10/1: {{convert|3,245|hp|kW|abbr=on|2}} estimated power at 15,000 rpm, with Water/Methanol injection for the [[Hawker-Siddeley HS.748MF Andover C Mk.1]].
;RDa.11:
;Mk.506: (RDa.3)
;Mk.510: (RDa.6)
;Mk.511: (RDa.6)
;Mk.512: (RDa.6)
;Mk.514: (RDa.6)
;Mk.520: (RDa.7)
;Mk.525: (RDa.7/1)
;Mk.526: (RDa.7/2)
;Mk.527: (RDa.7/2)
;Mk.528: (RDa.7/2)
;Mk.529: (RDa.7/2)
;Mk.530: (RDa.7/2)
;Mk.531: (RDa.7/2)
;Mk.551: (RDa.7)
;Mk.552: (RDa-7)
;Mk.540: (RDa.10)
;Mk.541: (RDa.11)
;Mk.542: (RDa.10/1)