Find out about the Navy's Solid Fuel Integral Rocket Ramjet and the results of its air launch from an unmanned vehicle.

The US Navy has successfully launched a Solid Fuel Integral Rocket Ramjet (SFIRR) from an unmanned target drone. The work marks a step towards the modernisation of missile technology, says the Naval ...

“We got our start by building these hybrid rocket engines, which are half-solid, half-liquid” fuel, he said, explaining that these depend on nitrous oxide, which reacts with the fuel, enabling ...

The flight was part of a project to develop a three-stage solid-fuel rocket for research payloads. In 2020, the Polish government selected Wojskowe Zakłady Lotnicze No. 1 to lead a consortium ...

The U.S. Navy successfully air-launched a Solid Fuel Integral Rocket Ramjet (SFIRR) from an unmanned vehicle for the first time, one step toward modernizing missile technology. The effort by Naval ...

According to the Ambrey report, the fire was caused by the "improper handling of a shipment of solid fuel intended ... shipment of ammonium perchlorate rocket fuel at the port in March 2025 ...

The port took in a shipment of "sodium perchlorate rocket fuel" in March ... the result of improper handling of a shipment of solid fuel intended for use in Iranian ballistic missiles," Ambrey ...

The Naval Air Warfare Center Weapons Division (NAWCWD) successfully air-launched the Solid Fuel Integral Rocket Ramjet (SFIRR ...

One private maritime risk consultancy said it believed the affected containers had contained solid fuel destined ... a shipment of sodium perchlorate rocket fuel at the port in March 2025".

The port took in a shipment of “sodium perchlorate rocket fuel” in March ... the result of improper handling of a shipment of solid fuel intended for use in Iranian ballistic missiles ...

Iran's defence ministry denied international media reports that the explosion may be connected to the mishandling of solid fuel used for missiles. The reports were "aligned with enemy psyops ...