Winglets Are For Pussies.
A derogatory acronym used in reference to the C-17 Globemastser III cargo aircraft. The C-17 is the only
US military airlifter to incorporate winglets into its design. Winglets are a
drag-reducing feature that improves fuel economy at cruise speeds. The WAFP alludes to this because the C-17 has a smaller maximum range than most strategic airlifters (the C-17 cannot "
go the distance"). Other strategic cargo aircraft were designed to have inherently
long range. The C-17, however, requires an addition fuel
tank installed into the ceiling of the cargo area to increase its range (space which could have been used for outsize cargo).
Even with this modification, C-17s are incapable of the
flight ranges achieved by similar strategic aircraft. Winglets were introduced into the design to increase range, if only minutely.
The C-17 also has a limited cargo capacity for a strategic mobility aircraft, both in volume and weight. This limitation is further exacerbated when the C-17 is tasked to
carry passengers, which occupy valuable cargo space. These weaknesses are especially highlighted when compared to more capable aircraft, such as the massive C-5 Galaxy, which carries significantly larger cargo loads over longer distances.
The lower range, cargo capacity, and passenger capabilities of the C-17 make it a
lightweight amongst the strategic airlift community, making it a "
pussy". Thus, winglets are for
pussy airlifters: Winglets Are For Pussies, WAFP.