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L3Harris is a leader in Scramjet Technology. Scramjet propulsion systems include:

• Dual Combustion Ramjet (DCR)

• Core-Burning Dual Mode Ramjet

Dual Combustion Ramjet (DCR)

Our Dual Combustion Ramjet (DCR) Engine Cycle has mature propulsion performance and structural durability.

Dual Mode Ramjet (DMRJ AKA Scramjet)

Our Dual Mode Ramjet (DMRJ, aka "Scramjet") Engine Technology offers the following features:

• Lighter Weight
• Reduced Heat Load
• Better Operability and higher Specific Thrust

A Dual Mode Ramjet is a Propulsion System which, dependent on the Flight Mach Number, operates in two Modes.

• Mode 1: As a Ramjet With High Mach but Sub-sonic Combustion; the “Throat” is provided through Thermal Choking. An “Isolater” is required for lower Mach operation to provide a Combustor Entrance Pressure higher than the Combustion Pressure.
• Mode 2: As a Scramjet With Supersonic Combustion.

Primary challenges are Fuel Conditioning, Vaporization, Mixing, and Combustion and Thermal Management.

DMRJs are suitable for Long Range Missiles and Reusable HCVs.