Ariane 5 is an active expendable European heavy-lift launch vehicle that is part of the Ariane rocket family. It is operated by European Space Agency (ESA). Ariane 5 is now being only operated in 1 variant: Ariane 5 ECA. The other 4 remaining variants of Ariane 5 that have been already retired are Ariane 5 G, G+, GS, ES. From 2008 to 2015 Ariane 5 ES was also used for launching 5 cargo missions to International Space Station carrying Automated Transfer Vehicle (ATV). The vehicle operates out of Ensemble de Lancement Ariane 3 (Ariane Launch Area 3) at Guiana Space Centre.

Some design features as well as flags and markings I’ve adopted from GameplayReviewUK on Youtube so go check him out.

I recommend turning on "Advanced tweakables" in KSP settings.

To download each variant of Ariane 5, go to the "Files" section.

Also Don’t forget to download the flags for Ariane 5 in the "Files" section.

Here are my other projects.

Ariane 5 G, G+, GS, ES, ECA

EPC H158, EPC H173

EPS L9.7, EPS L10, EPC-A

EAP P238, EAP P241

Ariane 5 ECA Umbilical Tower

Ariane 5 G
T-0:00:04 - Main Engine Ignition Sequence Start
T-0:00:00 - Main Engine Ignition
T+0:00:06 - Solid Rocket Boosters Ignition
T+0:00:06 - Lift Off
T+0:01:34 - Solid Rocket Boosters Jettison
T+0:02:16 - Fairing Deploy
T+0:03:26 - Main Engine Cut Off
T+0:03:30 - First Stage Separation
T+0:03:36 - Second Stage Engine Ignition
T+0:03:42 - Separation Motors Jettison

Ariane 5 G+
T-0:00:04 - Main Engine Ignition Sequence Start
T-0:00:00 - Main Engine Ignition
T+0:00:06 - Solid Rocket Boosters Ignition
T+0:00:06 - Lift Off
T+0:01:34 - Solid Rocket Boosters Jettison
T+0:02:16 - Fairing Deploy
T+0:03:26 - Main Engine Cut Off
T+0:03:30 - First Stage Separation
T+0:03:36 - Second Stage Engine Ignition
T+0:03:42 - Separation Motors Jettison

Ariane 5 GS
T-0:00:04 - Main Engine Ignition Sequence Start
T-0:00:00 - Main Engine Ignition
T+0:00:06 - Solid Rocket Boosters Ignition
T+0:00:06 - Lift Off
T+0:01:44 - Solid Rocket Boosters Jettison
T+0:02:16 - Fairing Deploy
T+0:03:26 - Main Engine Cut Off
T+0:03:30 - First Stage Separation
T+0:03:36 - Second Stage Engine Ignition
T+0:03:42 - Separation Motors Jettison

Ariane 5 ES
T-0:00:04 - Main Engine Ignition Sequence Start
T-0:00:00 - Main Engine Ignition
T+0:00:06 - Solid Rocket Boosters Ignition
T+0:00:06 - Lift Off
T+0:01:44 - Solid Rocket Boosters Jettison
T+0:02:16 - Fairing Deploy
T+0:03:58 - Main Engine Cut Off
T+0:04:02 - First Stage Separation
T+0:04:08 - Second Stage Engine Ignition
T+0:04:14 - Separation Motors Jettison

Ariane 5 ECA
T-0:00:04 - Second Stage Cryogenic Arms Retraction
T-0:00:04 - Main Engine Ignition Sequence Start
T-0:00:00 - Main Engine Ignition
T+0:00:06 - Solid Rocket Boosters Ignition
T+0:00:06 - Lift Off
T+0:01:44 - Solid Rocket Boosters Jettison
T+0:02:16 - Fairing Deploy
T+0:03:58 - Main Engine Cut Off
T+0:04:02 - First Stage Separation
T+0:04:08 - Second Stage Engine Ignition
T+0:04:14 - Separation Motors Jettison

Calculated with full thrust.