NACA investigation of icing-protection systems for turbojet-engine installations

Callaghan, Edmund E., von Glahn, Uwe., Gray, Vernon H.

A summary is presented of the investigations made in flight and in wind tunnels at the NACA Lewis laboratory to determine which components of turbojet engines are most critical in icing conditions and to evaluate several icing-protection methods. Complete removal or retraction of compressor-inlet screens upon entering icing conditions is recommended. Surface heating appears to be the most acceptable icing-protection method, although hot-gas bleedback offers a simple method for obtaining icing protection on some installations.

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