H-IIA & H-IIB

Payload compartment

Maximum Payload Diameter

3700 mm (145.7 in.) for 4-m fairings
4600 mm (181.1 in.) for 5-m fairings

Maximum Cylinder Length (may vary depending on adapter)

5800 mm (228.3 in.) for 4S fairing
4460 mm (175.6 in.) for 5S fairing
3800–4436 mm (149.6–174.6 in.) for dual payload fairings

Maximum Cone Length

4430 mm (174.4 in.) for 4S fairing
4664 mm (183.6 in.) for 5S fairing

Payload Adapter Interface Diameter

Model 937 M: 937 mm (36.9 in.)
Model 1194 M: 1194 mm (47.0 in.)
Model 1666 M: 1666 mm (65.6 in.)
Model 1666 S: 1666 mm (65.6 in.)
Model 2360 S: 2360 mm (92.9 in.)
Model 3470 S: 3470 mm (136.6 in.)

Payload Integration

Nominal Mission Schedule Begins

T–18 months

Launch Window

Last Countdown Hold Not Requiring Recycling

T–7 min (next opportunity in 25 min)

On-Pad Storage Capability

24 h without propellant

Last Access to Payload

T–10 h

Environment

Maximum Axial Load

4.0 g

Maximum Lateral Load

1.8 g

Minimum Lateral/Longitudinal Payload Frequency

10 Hz/30 Hz

Maximum Acoustic Level

H-IIA 202: 133 dB at 250 Hz

Overall Sound Pressure Level

H-IIA 202: 137.5 dB

Maximum Flight Shock

Clamp band separation system: 4000 g at 1500–3000 Hz
Separation nut system: 2000 g at 800–3000 Hz

Maximum Dynamic Pressure on Fairing

4-m fairing: 52.7 kPA (1100 lbf/ft²)
5-m fairing: 48.3 kPA (1010 lbf/ft²)

Maximum Aeroheating Rate at Fairing Separation Maximum Pressure Change in Fairing

1135 W/m² (0.1 BTU/ft²/s)
GTO: –4.3 kPa/s (–0.62 psi/s)
SSO: –4.5 kPa/s (–0.65 psi/s)

Cleanliness Level in Fairing

Class 5000

Payload Delivery

Standard Orbit Injection Accuracy (3 sigma)

SSO: 690 ± 10 km (372 ± 5.4 nmi), 98.6 deg ± 0.18 deg
GTO: 250 ± 4 km×36,225 ± 180 km (135 ± 2×19560 ± 97 nmi), 28.5 deg ± 0.02 deg

Attitude Accuracy (3 sigma)

±3 deg, ±0.3 deg/s

Nominal Payload Separation Rate

As required, nominally 1 m/s (3.3 ft/s)

Deployment Rotation Rate Available

0–5 rpm, or up to 50 rpm with spin table

Loiter Duration in Orbit

7000 s after liftoff with optional kit

Maneuvers (Thermal/Collision Avoidance)

Yes

Multiple/Auxiliary Payloads

Multiple or Comanifest

Dual payload manifesting is common on H-IIA missions, and dual payload fairing structures are available. Multiple manifesting will be assessed on a case by case basis.

Auxiliary Payloads

Auxiliary payloads can be accommodated depending on available performance and volume.