Table 2: Parameters of the proposed LAS.


Launched LVS weight340 kg
Payload to LEO7 kg
LAS engines output power13.1 MW
Balloons total volume0.5 mln·m3
Acceleration during launch assistance5.7 m/c2
Acceleration duration161 sec
Separation airspeed0.45 km/s
Separation altitude36.1 km
Flown structure weight (with ballast and launch vehicle)8.6 tons
Flown structure structural factor (loaded by ballast and launch vehicle)1.5*
Design maximal wind speed in lower troposphere18 m/s

10% margin for the ropes strength degradation included.