Orbital Antares - Manual (Page 46)

Antares
®
OSP-3
User’s Guide
Section 5.0
– Payload Interfaces
Release 1.1 July 2013 35
5.2.1. Non-Separating Payload Interface
Orbital provides non-separating payloads or payloads with customer-provided separation systems with a
1575 mm (62 in.) diameter bolted interface shown in Figure 5.2.1-1. The 1575 mm (62 in.) diameter
payload mounting surface provides a butt joint interface with 120 holes designed to accommodate SAE ¼
inch fasteners. The 1575 mm (62 in.) mechanical interface accommodates payloads up to 6,000 kg
(13,228 lb), which have a CG up to 2.0 m (79 in.) above the interface flange. The dynamic payload
envelope available within the Antares fairing using the non-separating 1575 mm (62 in.) is shown in Fig-
ure 5.1.1-1.
For customers that provide their own adapter and/or separation system, the top surface of the 1575 mm
(62 in.) diameter mechanical interface shown in Figure 5.2.1-1 is the interface point between the custom-
er-provided hardware and the launch vehicle. If a customer-provided spacecraft adapter and/or separa-
tion system is used, the maximum shock delivered to the Antares avionic cylinder must not exceed the
limit level characterized in Section 4. Additionally, interfaces for ground handling, encapsulation and
transportation equipment must also be provided for non-standard separation systems, or must conform to
existing Antares GSE.
5.2.2. Optional Mechanical Interfaces
Orbital offers three separation systems as enhancements to the standard 1575 mm (62 in.) bolted inter-
face. These are based on the RUAG 937S, 1197VS, and 1666VS separation systems. Additional details
on these separating interfaces are found in Section 8.1.
Figure 5.2.1-1. Antares 1575 mm (62 in.) Non-Separating Payload Mechanical Interface