Air International 1980-07
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B.Burns - Efficacious air intakes /Fundamentals of design/ (8)
Example of subsonic nose pitot intakes is provided by the MiG-15bis
Example of the centre body supersonic external compression intake is provided by the MiG-21
The horizontal wedge internal compression intake, first displayed by the A-5 Vigilante, has since been adopted by such types as the F-14 Tomcat, the F-15 Eagle, the Panavia Tornado and the MiG-25 Foxbat (illustrated), though these all differ greatly in detail design.
The F-18A Hornet (illustrated) has its intakes shielded by strokes for good characteristics at high incidence. Features of the Hornet's arrangement include a five per cent pre-entry compression wedge, complex diverter paths - up through slots in the strokes, down behind splitter plates and outward between upper lip and wing undersurfaces - and BL bleed holes on the splitter plates ahead of the intake faces, plus cambered lower lips. This provides an example of the complexity of detail design to ensure good characteristics.
Example of subsonic nose pitot intakes is provided by the F-84F Thunderstreak.
Летчики 58-го апиб у МиГ-23Б
Vertical wedge supersonic external compression side intakes illustrated by the MiG-23BM
Example of the centre body supersonic external compression intake is provided by the Lightning.
Vertical wedge supersonic external compression side intakes illustrated by the JA 37 Viggen.
(Lower) The enlarged "deep breather" intakes applied to the Meteor F Mk 8 in the mid-'fifties (the original, smaller-diameter intakes being seen above). The enlarged intakes benefited climb performance at the expense of max speed and cruise efficiency.