Lockheed Martin Astronautics

Atlas V (401) Atlas V (411) Atlas V (421) Atlas V (431)

Overall
Vehicle

Operational from 21.08.2002 20.04.2006 11.10.2007 11.03.2005

 

to 18.04.2017 08.09.2016 28.07.2016 18.12.2016
Orbital flights   36 4 6 3
Payload weight t GTO 4.75 GTO 5.95 GTO 6.80 GTO 7.70
Gross liftoff weight t 336.22 384.30 432.00 479.60
Gross propellant weight t 304.92 347.55 390.18 432.48
Total length m 57.31 58.23 59.14 59.14
Max. diameter (span) m        
Total liftoff thrust (s.l.) kN 3,826.9      
Total impulse (vac) MN*s 1,034.0 1,150.8 1,267.5 1,384.3

Fairing

Total length m 12.01/12.93 12.93 12.93/13.84 13.84
Diameter m 4.20 4.20 4.20 4.20
Total weight t 2.127/2.305 2.305 2.305/2.487 2.487
Stage 2

Name

  Cent. D-5  SEC Cent. D-5  SEC Cent. D-5  SEC Cent. D-5  SEC
  Length (+interstage) m 12.84 (12.68) 12.84 (12.68) 12.84 (12.68) 12.84 (11.68)
Diameter m 3.05 3.05 3.05 3.05
Liftoff weight t 23.073 (+1.129) 23.073 (+1.129)

23.073 (+1.129)

23.073 (+1.129)
Propellant weight t 20.830 20.830 20.830 20.830
Engines (Chambers)   RL-10A-4-2 (1) RL-10A-4-2 (1) RL-10A-4-2 (1) RL-10A-4-2 (1)
Propellant   LH2/LOX LH2/LOX LH2/LOX LH2/LOX
Total thrust (vac) kN 97.9 97.9 97.9 97.9
Specific impulse (vac) N*s/kg 4378 4378 4378 4378
Burn time s 932 932 932 932
Total impulse (vac) MN*s 91.2 91.2 91.2 91.2

Stage 1

Name   CCB CCB CCB CCB
  Length m 32.46 32.46 32.46 32.46
Diameter m 3.81 (3.05) 3.81 3.81 3.81
Liftoff weight t 305.143 305.143 305.143 305.143
Propellant weight t 284.089 284.089 284.089 284.089
Engines (Chambers)   RD-180 (2) RD-180 (2) RD-180 (2) RD-180 (2)
Propellant   Kerosene/LOX Kerosene/LOX Kerosene/LOX Kerosene/LOX
Total thrust (s.l.) kN 3,826.9 3,826.9 3,826.9 3,826.9
Specific impulse (s.l.) N*s/kg 3058 3058 3058 3058
Burn time s 227 (100%) 227 (100%) 227 (100%) 227 (100%)
Total impulse (vac) MN*s 942.8 942.8 942.8 942.8

Booster

Name     1 SRB 2 SRB 3 SRB
  Length m   20.42 (17.70) 20.42 (17.70) 20.42 (17.70)
Diameter m 1.55 1.55 1.55
Liftoff weight t 46.70 93.39 140.09
Propellant weight t 42.63 85.26 127.89
Engines (Chambers)   Aerojet AJ-60A Aerojet AJ-60A Aerojet AJ-60A
Propellant   solid HTPB solid HTPB solid HTPB
Total thrust (s.l.) kN 1,112.1 (av.) 2,224.2 (av.) 3,336.3 (av.)
Specific impulse (s.l.) N*s/kg 2447 2447 2447
Burn time s 93.8 93.8 93.8
Total impulse (vac) MN*s 116.8 233.5 350.3