Islamic Republic Iran

Simorgh (Unha-1)

Simorgh

Simorgh+

Overall
Vehicle
Operational from   19.04.2016 27.07.2017

 

to     09.02.2020
Orbital flights     1 3
Payload weight t LEO - LEO - LEO ~0.100
Gross liftoff weight t ~84.80 ~84.80 ~85.80
Gross propellant weight t 70.51 70.51 71.74
Total length m 25.974 25.974 ~26.50
Max. diameter (span) m      
Total liftoff thrust (s.l.) kN 1,271.0 1,271.0 1,332.7
Total impulse (vac) MN*s 188.4 196.0 198.2

Fairing

Total length m ~3.20 ~3.20 ~3.20
Diameter m 1.50 1.50 1.50
Total weight t ~0.12 ~0.12 ~0.12
Stage 3 Name       Saman-1
  Length m  Without

third stage

no Orbit

 Without

third stage

no Orbit

~1.25
Diameter m ~0.60
Liftoff weight t ~0.315
Propellant weight t 0.185
Engines    
Propellant   solid
Total thrust (vac) kN 13.0 (av.)
Specific impulse (vac) N*s/kg 2810
Burn time s 40
Total impulse (vac) MN*s 0.52
Stage 2

Name

       
  Length (+adapter) m ~5.00 ~5.00 ~5.50
Diameter m 1.50 1.50 1.50
Liftoff weight t ~ 8.96 ~ 8.96 ~9.60
Propellant weight t ~7.47 ~7.47 ~8.00
Engines    2 LRE-4 (4)  2 LRE-4+ (4)  2 LRE-4++ (4)
Propellant   UDMH / AK-27 UDMH / N2O4 UDMH / N2O4 +
Total thrust (vac) kN 68.2 70.8 ~71.6
Specific impulse (vac) N*s/kg  ~2736  ~2844 ~2864
Burn time s 300 300 320
Total impulse (vac) MN*s 20.4 21.2 22.9

Stage 1

Name        
  Length (+ adapter) m 17.816 17.816 17.816
Diameter m 2.40 2.40 2.40
Liftoff weight t ~75.65 ~75.65 ~75.65
Propellant weight t ~63.04 ~63.04 ~63.04
Engines   Nodong (4) Nodong+ (4) Nodong+ (4)
Propellant   UDMH /AK-27 UDMH /N2O4 UDMH /N2O4
Total thrust (s.l.) kN 1,137.6 (+133.4) 1,192.8 (+139.9) 1,192.8 (+139.9)
Specific impulse (s.l.) N*s/kg ~2422 ~2540 ~2540
Burn time s 120 120 120
Total impulse (vac) MN*s 168.0 174.8 174.8