ESA / Arianespace

 Ariane-5ME Ariane-6.2 Ariane-6.4

Overall
Vehicle

 Operational from      
  to      
Orbital flights   canceled project
Payload weight t  GTO ~12  GTO ~6  GTO ~12
Gross liftoff weight t ~785    
Gross propellant weight t 679.28    
Total length m 59.17 ~62 ~62
Max. diameter (span) m      
Total liftoff thrust (s.l.) kN      
Total impulse (vac) MN*s 2,127.8 1,615.5 2,389.1

Fairing

 Total length m 21.31 21.31 21.31
Diameter m 5.45 5.45 5.45
Total weight (+SYLDA) t  ~3  ~3  ~3
Stage 2

Name

   ESC-B ULPM ULPM

 

 Length m 5.88 (~ 7.4) ~8.70 ~8.70
Diameter m 5.45 5.45 5.45
Liftoff weight t 28.60    
Propellant weight t 24.28 ~30 ~30
Engines   VINCI VINCI VINCI
Propellant   LH2/LOX LH2/LOX LH2/LOX
Total thrust (vac) kN 180 180 180
Specific impulse vac) N*s/kg 4560 4560 4560
Burn time s 615 760 760
Total impulse (vac) MN*s 110.7 136.8 136.8
Stage 1

Name

   EPC LLPM LLPM

 

 Length m 31.98 (~31) ~ 32 ~32
Diameter m 5.46 5.46 5.46
Liftoff weight t ~188.5 ~188.5 ~188.5
Propellant weight t 173.75 173.75 173.75
Engines   Vulcain Mk3 Vulcain Mk3 Vulcain Mk3
Propellant   LH2/LOX LH2/LOX LH2/LOX
Total thrust (s.l.) kN 1,326.7 1,326.7 1,326.7
Specific impulse (s.l.) N*s/kg 3551 3551 3551
Burn time s 465 465 465
Total impulse (vac) MN*s 705.1 705.1 705.1
Booster

Name

   2 EAP-241A 2 ESR  4 ESR

 

 Length m 31.60 ~14 (~22)  ~14 (~22)
Diameter m 3.05 3.40 3.40
Liftoff weight t 553.20 ~311 ~621
Propellant weight t 481.25 283.27 566.54
Engines   MPS P-120C P-120C
Propellant   solid HTPB solid HTPB solid HTPB
Total thrust (s.l.) kN 9,209.8 (av)  5,438.4(av) 10,876.8 (av)
Specific impulse (s.l.) N*s/kg 2481 2550 2550
Burn time s 129.7 132.8 132.8
Total impulse (vac) MN*s 1,312.0 773.6 1,547.2