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Space


Military Spaceplane Specifications

MAXIMUM PERFORMANCE MISSION SETS

Maximum Performance Missions Sets are system defining and encompass the four missions and the Design Reference Missions. Instead of giving a threshold and objective for each mission requirement, missions sets are defined. Each mission set will define a point solution and provide visibility into the sensitivities of the requirements from the thresholds (Mark I) to the objective (Mark IV). If takeoff and landing bases are constrained to the U.S. (including Alaska and Hawaii), this will reduce stated pop-up payloads by at least half.

Mark I (Demonstrator or ACTD non-orbital vehicle that can only pop up)

  • Pop-up profile: Approximately Mach 16 at 300 kft at payload separation
  • Pop up and deliver 1 to 3 klbs of mission assets (does not include boost stage, aeroshell, guidance or propellant) to any terrestrial destination
  • Pop up and deliver 3 to 5 klbs of orbital assets (does not include upperstage) due east to a 100 x 100 NM orbit
  • Payload bay size 10' x 5' x 5', weight capacity 10 klbs

Mark II (Orbit capable vehicle)

  • Pop up and deliver 7 to 9 klbs of mission assets (does not include boost stage, aeroshell, guidance or propellant) to any terrestrial destination
  • Pop up and deliver 15 klbs of orbital assets (does not include upperstage) due east to a 100 x 100 NM orbit
  • Launch due east, carrying 4-klb payload, orbit at 100 x 100 NM
  • Payload bay size 25' x 12' x 12', weight capacity 20 klbs

Mark III

  • Pop up and deliver 14 to 18 klbs of mission assets (does not include boost stage, aeroshell, guidance or propellant) to any terrestrial destination
  • Pop up and deliver 25 klbs of orbital assets (does not include upperstage) due east to a 100 x 100 NM orbit
  • Launch due east, carrying a 6-klb payload, orbit at 100 x 100 NM and return to base
  • Launch polar, carrying 1-klb payload and return to base
  • Payload bay size 25' x 12' x 12', weight capacity 40 klbs

Mark IV

  • Pop up and deliver 20 to 30 klbs of mission assets (does not include boost stage, aeroshell, guidance or propellant) to any terrestrial destination
  • Pop up and deliver 45 klbs of orbital assets (does not include upperstage) due east to a 100 x 100 NM orbit
  • Launch due east, carrying a 20-klb payload, orbit at 100 x 100 NM and return to base
  • Launch polar, carrying 5-klb payload and return to base
  • Payload bay size 45' x 15' x 15', weight capacity 60 klbs

REFERENCE MISSIONS TO MISSION SETS MATRIX

          Ref Mission          Mark I       Mark II        Mark III         Mark IV     
    Payload Bay Data         10' x 5' x   25' x 12' x     25' x 12' x     45' x 15' x   
                                 5'           12'             12'             15'       
                              10 klbs       20 klbs         40 klbs         60 klbs     
    DRM 1 (Pop up and         1-3 klb      7 to 9 klb    14 to 18 klb    20 to 30 klb   
    deliver mission                                                                     
    assets)                                                                             
    DRM 2 (Pop up and         3-5 klb        15 klb         25 klb          45 klb      
    deliver orbit assets                                                                
    due east 100 x 100 NM)                                                              
    DRM 3 (Co-Orbit)            N/A        4 klb due    6 klb due east    20 klb due    
                                           east 100 x    100 x 100 NM   east 100 x 100  
                                             100 NM                           NM        
    DRM 4 (Recover)             N/A           TBD             TBD             TBD       
    DRM 5 (Polar Once           N/A           N/A            1 klb           5 klb      
    Around)                                                                             
    

NOTES:

Mission asset weight is a core weight and does not include a boost stage, aeroshell, guidance or propellant.

Orbital asset weight does not include an upperstage.


                      Requirements Matrix for Mark II, III and IV                   
                                 (Desired for Mark I)                               
                 Requirement                   Threshold             Objective        
    Sortie Utilization Rates                                                          
    Peacetime sustained                     0.10 sortie/day       0.20 sortie/day     
    War/exercise sustained (30 days)        0.33 sortie/day       0.50 sortie/day     
    War/exercise surge (7 days)             0.50 sortie/day       1.00 sortie/day     
    Turn Times                                                                        
    Emergency war or peace                      8 hours               2 hours         
    MOB peacetime sustained                      2 days                1 day          
    MOB war/exercise sustained (30 days)        18 hours              12 hours        
    MOB war/exercise surge (7 days)             12 hours              8 hours         
    DOL peacetime sustained                      3 days                1 day          
    DOL war/exercise sustained (30 days)        24 hours              12 hours        
    DOL war/exercise surge (7 days)             18 hours              8 hours         
    System Availability                                                               
    Mission capable rate                       80 percent            95 percent       
    Flight and Ground Environments                                                    
    Visibility                                    0 ft                  0 ft          
    Ceiling                                       0 ft                  0 ft          
    Crosswind component                         25 knots              35 knots        
    Total wind                                  40 knots              50 knots        
    Icing                                   light rime icing    moderate rime icing   
    Absolute humidity                          30 gms/m3             45 gms/m3        
    Upper level winds                       95th percentile     all shear conditions  
                                                 shear                                
    Outside temperature                       -20 to 100F           -45 to 120F       
    Precipitation                                light                moderate        
    Space Environment                                                                 
    Radiation level                               TBD                   TBD           
    Flight Safety                                                                     
    Risk to friendly population                < 1 x 10-6            < 1 x 10-7       
    Flight Segment loss                      < 1 loss /2000    < 1 loss/5000 sorties  
                                                sorties                               
    Reliability                                  0.9995                0.9998         
    Cross Range                                                                       
    Unrestricted pop-up cross range              600 NM               1200 NM         
    CONUS pop-up cross range                     400 NM                600 NM         
    Orbital cross range                         1200 NM               2400 NM         
    "Pop-up" Range                                                                    
    CONUS pop-up range                          1600 NM               1200 NM         
    Ferry range minimum                         2000 NM              worldwide        
    On-orbit Maneuver                                                                 
    Excess V (at expense of payload)            300 fps               600 fps         
    Pointing accuracy                       15 milliradians       10 milliradians     
    Mission Duration                                                                  
    On-orbit time                               24 hours              72 hours        
    Emergency extension on-orbit                12 hours              24 hours        
    Orbital Impact                                                                    
    Survival impact object size             0.1-cm diameter        1-cm diameter      
    Survival impact object mass                   TBD                   TBD           
    Survival impact velocity                      TBD                   TBD           
    Alert Hold                                                                        
    Hold Mission Capable                        15 days               30 days         
    Mission Capable to Alert 2-hour             4 hours               2 hours         
    Status                                                                            
    Hold Alert 2-hour Status                     3 days                7 days         
    Alert 2-hour to Alert 15-minute        1 hour 45 minutes         30 minutes       
    Status                                                                            
    Hold Alert 15-minute Status                 12 hours              24 hours        
    Alert 15 Minute to Launch                  15 minutes            5 minutes        
    Design Life                                                                      
    Primary Structure                         250 sorties           500 sorties      
    Time between major overhauls              100 sorties           250 sorties      
    Engine life                               100 sorties           250 sorties      
    Time between engine overhauls              50 sorties           100 sorties      
    Subsystem life                            100 sorties           250 sorties      
    Take-off and Landing                                                             
    Runway size                            10,000 ft x 150 ft    8000 ft x 150 ft    
    Runway load bearing                           S65                   S45          
    Vertical landing accuracy                    50 ft                 25 ft         
    Payload Container                                                                
    Container change-out                         1 hour             30 minutes       
    Crew Station Environment (if rqd)                                                
    Life support duration                       24 hours             72 hours        
    Emergency extension on-orbit                12 hours              24 hours        
    Crew Escape (if rqd)                                                             
    Escape capability                           subsonic           full envelope     
    Maintenance and Support                                                          
    Maintenance work hours/sortie              100 hours             50 hours        
    R&R engine                                  8 hours               4 hours        
    




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