Adjustable forced air aircraft de-icing system

A nozzle for an aircraft de-icing system, the nozzle comprising:

• a nozzle body having a proximal end, a distal end, a sidewall extending between the proximal end and the distal end along a longitudinal axis, with a first fluid path extending through the nozzle body between the proximal end and the distal end;
• and
• a cowl surrounding the nozzle body and movable relative to the nozzle body in a direction along the longitudinal axis during operation of the nozzle, the cowl comprising:
• a first portion having an inner diameter that is larger than an outer diameter of the nozzle body, and
• a second portion extending distally from the first portion,
• wherein an inner surface of the first portion of the cowl and an outer surface of the distal end of the nozzle body define an annular space having a second fluid path different from the first fluid path,
• wherein a cross-sectional area of the annular space increases as the cowl is moved in a direction from the proximal end of the nozzle body toward the distal end of the nozzle body, and wherein the cross-sectional area of the annular space decreases as the cowl is moved in a direction from the distal end of the nozzle body toward the proximal end of the nozzle body, and
• wherein the nozzle is configured for selectively mixing varying amounts of pressurized air and a liquid de-icing agent via the first and second fluid paths to provide a spray pattern for application on a surface of an aircraft based on a position of the cowl relative to the nozzle body.

A nozzle for an aircraft de-icing system, the nozzle comprising:

• a nozzle body having a proximal end, a distal end, and a sidewall extending between the proximal end and the distal end along a longitudinal axis, with a first fluid path extending through the nozzle body between the proximal end and the distal end;
• a plug within at least a portion of the nozzle body at the distal end of the nozzle body, the plug comprising:
• a first portion fixed relative to the nozzle body, and
• a second portion movable relative to the first portion from a first position to a second position in a direction along the longitudinal axis during operation of the nozzle;
• and
• a cowl surrounding at least one of the nozzle body and the plug,
• wherein an inner surface of the second portion of the cowl and an outer surface of the distal end of the plug define an annular space having a second fluid path different from the first fluid path,
• wherein a cross-sectional area of the annular space increases as the cowl is moved in a direction from the proximal end of the nozzle body toward the distal end of the nozzle body, and wherein the cross-sectional area of the annular space decreases as the cowl is moved in a direction from the distal end of the nozzle body toward the proximal end of the nozzle body;
• and
• wherein the nozzle is configured for selectively mixing varying amounts of pressurized air and a liquid de-icing agent via the first and second fluid paths to provide a spray pattern for application on a surface of an aircraft based on a position of the first portion of the plug relative to the second portion of the plug.