Helwan's "Egiptian General Aero Organization" built engines like the E-300 for the "Helwan" aircraft.

-It was the Hispano Suiza HA-300, built under license and designed by W. Messerschmitt.

"HA-300"

-This turbojet engine was designed and developed in this factory by engineer F. Brandner to replace the RR Orpheus that was intended to be installed on that supersonic plane.

"Flight test"

-The E-300 delivered 7,275 lbs. of thrust dry and 10,580 lbs with afterburner.

-EGAO built several models of autochthonous turbojets. For example, the E-200 called "The Kahera", the mentioned E-300 and the E-300A.

-The E-300C-1 gave 6615 lbs. and was similar to the E-300A. The E-300C-2 delivered 7495 lbs. The E-300PX or the E-300AF with After Fan.

"E-300"

-The E-300A had a 9-stage compressor, cannular combustor with 10 internal chambers and a 2-stage turbine. There are other works and projects carried out under the name of Helwan-AOI (see).