Sea Launch User's Guide

7000
6000
Maximum expected capability
available with upgraded SCA
Spacecraft mass, kg
5000
4000
3000
Maximum expected capability
with standard SCA 702
2000
1000
SC Note: mass and CG limits calculated with
a SC lateral mass load and factor CG limits = 2.0 calculated g and nowith
load a lateral peaking load at factor SC interface = 2.0 g and stiffness
uniform SC interface stiffness.
0
0.00 0.50 1.00 1.50 2.00 2.50 3.00
Spacecraft CG, m
265807J3-043R3
Figure 6-4. Expected Spacecraft Mass and CG Limits With SCA702 and SCA702GEM Spacecraft
Adapters
6.2 Modal Frequencies
Frequency limits
Sea Launch can accommodate spacecraft with longitudinal and lateral
fundamental frequencies below those commonly offered in the industry.
As a guide, the spacecraft longitudinal fundamental frequency should be
≥20 Hz and its lateral fundamental frequency should be ≥8 Hz.
6.3 Electromagnetic Compatibility
Radio frequency
(RF) impingement
on launch vehicle
(LV)
To avoid electromagnetic interference with LV systems, spacecraft electrical
field radiation impingement on the LV must not exceed the levels
shown in figure 6-5. Spacecraft RF system characteristics will be necessary
for integrated analysis and for the required FCC special temporary
authority (STA) license, which is necessary for Home Port RF testing.
6-8 D688-10009-1 REV B