Lockheed Martin Astronautics

LLV-1

 Athena I (LMLV-1) Athena II  Athena Ic Athena IIc
Overall
Vehicle		 Operational from 15.08.1995 23.08.1997 07.01.1998    

 

 to   30.09.2001 24.09.1999    
Orbital flights    1 3  3 canceled ? canceled ?
Payload weight t LPEO 0.50 LPEO 0.515 LPEO 1.490 SSO 0.70 SSO 1.55
Gross liftoff weight t 62.8 66.2 120.0    
Gross propellant weight t 55.76 59.20 108.21    
Total length m 18.37 18.86 28.26 19.83 29.73
Max. diameter (span) m          
Total liftoff thrust (s.l.) kN          
Total impulse (vac) MN*s 153.3 163.2 297.3    

Fairing

 Total length m 6.00 6.00 6.00 6.00 6.00
Diameter m 2.34 2.34 2.34 2.34 2.34
Total weight t 0.535 0.535 0.535 0.535 0.535

Stage 4

 Name  

 

  O.A.M.   O.A.M.
  Length m     0.81   0.81
Diameter m 2.34 2.34
Liftoff weight t 0.714 0.714
Propellant weight t 0.354 0.354
Engines  

MR-107 (4)

MR-107 (4)
Propellant   Hydrazine Hydrazine
Total thrust (vac) kN 0.89 0.89
Specific impulse (vac) N*s/kg 2206 2206
Burn time s 890 890
Total impulse (vac) MN*s 0.78 0.78
Stage 3

Name

   O.A.M. O.A.M. ORBUS-21D O.A.M. Castor 30B
  Length m 0.81 0.81 2.04 (3.17) 0.81 4.70 (3.50)
Diameter m 2.34 2.34 2.34 2.34 2.36
Liftoff weight t 0.596 0.714 10.804 0.714 14.06
Propellant weight t 0.236 0.354 9.839 0.354 12.84
Engines  

MR-107 (4)

MR-107 (4)

 UTC

MR-107 (4)

 Thiokol (ATK)
Propellant   Hydrazine Hydrazine solid HTPB Hydrazine solid HTPB
Total thrust (vac) kN 0.89 0.89 181.5 0.89 258.3 (av)
Specific impulse (vac) N*s/kg 2157 2206 2878 2206 2892
Burn time s 580 890 156 890 144
Total impulse (vac) MN*s 0.51 0.78 28.3 0.78 37.1

Stage 2

 Name   ORBUS-21D ORBUS-21D Castor 120 Castor 30B Castor 120XL
  Length m 2.04 (3.17) 2.04 (3.17) 10.00 (9.02) 4.70 (3.50) 8.30 (9.53)
Diameter m 2.34 2.34 2.36 2.36 2.36
Liftoff weight t 10.899 10.899 53.10 14.06  
Propellant weight t 9.839 9.839 49.01 12.84  
Engines   UTC UTC Thiokol (ATK) Thiokol (ATK) Thiokol (ATK)

Propellant

   solid HTPB solid HTPB solid HTPB solid HTPB solid HTPB
Total thrust (vac) kN 181.5 181.5 1,685.9 (av) 258.3 (av)  
Specific impulse (vac) N*s/kg 2878 2878 2736 2892  
Burn time s 156 156 79.5 144  
Total impulse (vac) MN*s  28.3 28.3 134.1 37.1  

Stage 1

 Name   Peacekeeper Castor 120 Castor 120 Castor 120XL Castor 120XL
  Length (+adapter) m 10.32 (8.53) 10.81 (9.02) 10.22 (9.02) 9.13 (9.53) 10.73 (9.53)
Diameter m 2.34 2.36 2.36 2.36 2.36
Liftoff weight t 50.00 53.40 53.40    
Propellant weight t 45.69 49.01 49.01    
Engines    Thiokol TU-903 Thiokol (ATK) Thiokol (ATK) Thiokol (ATK) Thiokol (ATK)
Propellant   solid HTPB solid HTPB solid HTPB solid HTPB solid HTPB
Total thrust (s.l.) kN 1,974.8 (av) 1,528.9 (av) 1,528.9 (av)    
Specific impulse (s.l.) N*s/kg 2442 2481 2481    
Burn time s 56.5 79.5 79.5    
Total impulse (vac) MN*s 124.5 134.1 134.1