Orbital GMD Boost Vehicle User Manual
Gmd boost vehicle
FACT SHEET
QUICK FACTS
The Orbital Sciences Corporation Boost 
Vehicle (OBV) is a two or three-stage 
solid motor rocket booster system 
developed for the GBI. Orbital’s boost 
vehicle has been successful in all eleven 
flight tests conducted between February 
2003 to January 2013. 
The baseline OBV design is derived 
from Orbital’s highly successful lineage 
of small satellite launch vehicles – 
Pegasus
®
, Taurus
®
and Minotaur.
The DSC upgrade will provide next-
generation avionics to support additional 
tactical missile production and 
sustainment of the system throughout 
the coming decades.
• 30+ years of boost vehicle experience
• 24/7/365 operational capability
• State-of-the-Art high-reliability missile
avionics
• Fully ISO-9001 and AS9100 compliant
production processes
Overview
Orbital Sciences Corporation 
was selected by The Boeing 
Company in December 2001 
to design, develop, and test 
a boost vehicle for the U.S. 
Missile Defense Agency’s 
(MDA) Ground-based Midcourse 
Defense (GMD) program. The 
GMD System is the first and only 
operationally deployed missile 
defense program to defend 
the homeland against long-
range ballistic missile attacks. 
The system provides early 
detection and tracking during 
the boost phase, midcourse 
target discrimination, precision 
intercept and destruction of 
inbound ICBMs through force of 
hit-to-kill technology.
GMD has been in advanced 
development since 1998 and is 
based on technologies pioneered 
by MDA in the 1980’s and 1990’s. 
It is currently a research 
and development program 
incorporating extensive ground 
and flight tests to verify system 
performance against long range 
ballistic missile targets. Boeing, 
as the prime contractor, is 
responsible for the development, 
test, and integration of all the GMD elements, including the Ground Based Interceptor (GBI), Ground 
Systems, and interfaces with other elements of the Ballistic Missile Defense System.
The GMD System is designed to intercept and destroy hostile ballistic missiles during their 
midcourse phase of flight, before their reentry into the Earth’s atmosphere. The GMD 
Exoatmospheric Kill Vehicle (EKV) employs "hit-to-kill" technology to detect, discriminate, and 
destroy an incoming missile’s warhead using only force of impact or kinetic energy. The Orbital 
Boost Vehicle (OBV) is designed to deliver the EKV to the precise exoatmospheric endgame 
conditions necessary to intercept the threat. Together, the OBV and EKV form the GBI, which is 
integrated by Boeing.
The Raytheon-developed EKV is integrated with 
Orbital’s GMD Boost Vehicle.
GMD Boost Vehicle
Ground-based Midcourse Defense Boost Vehicle
Silo emplacement of a Ground-based Midcourse Defense Boost Vehicle