Welcome to SAE Engineering
Fuel Rich Sustainer Grains – Akash Missile
Fuel Rich Sustainer Grains for the Akash missile are specialized solid rocket propellants designed to power the missile during its mid-course flight phase. They maintain supersonic speeds after the initial booster stage, providing sustained thrust for extended range and effective target interception.
Description:
These are solid, cast, or pressed propellant grains, often manufactured in free-standing cylindrical or shaped configurations to optimize thrust for the ramjet propulsion system. The geometry is designed to control surface area and burn rate for consistent mid-course acceleration.
Chemical Composition (General):
While exact chemical formulas are proprietary, these grains generally use high-energy composite propellants with the following typical components:
- Oxidizer: Ammonium Perchlorate (AP).
- Fuel / Binder: Synthetic rubber binders such as Hydroxyl-Terminated Polybutadiene (HTPB).
- Metal Fuel: Aluminum (Al) or other metallic additives to produce fuel-rich exhaust gases necessary for ramjet combustion.
Use:
- Functions as the secondary motor (sustainer) after the booster stage.
- Maintains high-speed flight, burning for longer durations to propel the missile at Mach 2.5–3.5.
- Essential for long-range engagements (up to 25–30 km) against aircraft and missiles.
- Supports the supersonic ramjet performance of the Indian Akash air defense system.
Contact us at: info@sae-group.net