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===Engine===
{{main|General Electric J79}}
[[File:F104Engine.JPG|thumb|alt=GE J79 engine interior view|Detail of F-104G's J79 turbojet exhaust (the red coloring has been added by the museum)]]
The F-104 was designed to use the General Electric J79 turbojet engine,<ref name="Complete Encyclopedia">{{cite book|author=<!--compilation of material with no listed author(s)-->|editor-last=Donald |editor-first=David |title=The Complete Encyclopedia of World Aircraft |___location=New York |publisher=Barnes & Noble Books |year=1997 |ISBN=0-7607-0592-5}}</ref> fed by side-mounted intakes with fixed [[inlet cones]] optimized for performance at [[Mach (speed)|Mach]] 1.7 (increased to Mach 2 for later F-104s equipped with more powerful J79-GE-19 engines).<ref name="Davies2014p10">Davies 2014, p. 10.</ref> Unlike some supersonic aircraft, the F-104 did not have variable-geometry inlets. Its thrust-to-drag ratio was excellent, allowing a maximum speed well in excess of Mach 2. Available thrust was actually limited by the geometry of the inlet scoop and duct; the aircraft was capable even higher Mach numbers except for the aerodynamic heating limitations of the aluminum structure.<ref name="Upton2003p24">Upton 2003, p. 24.</ref>
The engine consisted of a 17-stage compressor, accessory drive section, annular combustion chamber, three-stage turbine, and afterburner. The initial verson of the engine delivered with the F-104A, the J79-GE-3B, was rated at {{convert|42.7|kN|abbr=on}} dry thrust and {{convert|65.8|kN|abbr=on}} with afterburner; the ultimate version, the J79-GE-19, was rated at {{convert|52.8|kN|abbr=on}} and {{convert|79.6|kN|abbr=on}}, respectively. Bleed air from the compressor's 17th stage was used for the BLCS, fuel transfer, air conditioning, cabin pressurization, hot air jet rain removal, canopy and windshield defogging and defrosting, and pressure for the pilot's anti-G suit and gun gas purging.<ref name="Dobrzyński2015p108">Dobrzyński 2015, p. 108.</ref><ref name="Dobrzyński2015p114">Dobrzyński 2015, p. 114.</ref>
===Armament===
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