A method for guiding efflux air from a fan-in-wing model into a discharge duct

A scheme is described by means of which the 12-inch fan-in-wing model in the Engine Laboratory was separated from a mechanically connected effluxremoving duct. The modifications that were introduced included a slotted bellmouth inlet, which served as a catch-flow entrance below the air gap, and a diffuser at the exit of the ducting system, which...

Analysis of the performance of a highly loaded 12-inch VTOL Z-axis fan-in-wing model at zero forward speed

The performance of a highly loaded VTOL fan-in-wing model was examined under static ambient conditions. The experiments revealed that the fan was capable of delivering a maximum disk loading of 465 p.s.f. at an over-all efficiency of only 65 percent. At somewhat lower loadings, more efficient operation was possible, typically: 72 percent at 445...

Analysis of the performance of a highly loaded 12-inch VTOL Z-axis fan-in-wing model at zero forward speed

The performance of a highly loaded VTOL fan-in-wing model was examined under static ambient conditions. The experiments revealed that the fan was capable of delivering a maximum disk loading of 465 p.s.f. at an over-all efficiency of only 65 percent. At somewhat lower loadings, more efficient operation was possible, typically: 72 percent at 445...