text: The effect of the rectangular planform may 
  be appreciated by matching a near elliptical 
  a 
  lift distribution with a planform with 
  constant chord. 
  tip 
  The chords near ‘the 
  develop less lift pressure than the root and 
  consequently have lower section lift coe&- 
  cients. The great nonuniformity of local lift 
  coefficient along the span implies that some 
  sections carry .more than their share of the 
  load while others carry less than their share 
  of the load. Hence, for a given aspect ratio, 
  the rectangular planform will be less efficient 
  -t-- 
  For exampie, a 
  LlLill UK C‘lqJLlCal wing. 
  rectangular wing of AR=6 would have 16 
  percent higher induced angle of attack for the 
  wing and 5 percent higher induced drag than 
  an elliptical wing of the same aspect ratio. 
  
  versus 
  
  lift coefficient, f! 
  G’ 
  Tbac e!liptical wing p*
  scm:spnn L.“CY.ICG. 
  
  duces a constant value of$=J.O  throughout 
  
  At the other extreme of taper is the pointed 
  wing which has a taper ratio of zero. The 
  extremely small parcel of area at the pointed 
  tip 
  the main tip 
  vortex at the tip and a drastic change in down- 
  wash distribution 
  results. The pointed wing 
  has greatest downwash at the root and this 
  downwash decreases toward the tip. 
  In the 
  tip, an 
  immediate vicinity of the pointed 
  indicates that 
  upwash is encountered which 
  negative induced angles of attack exist in this 
  area. The resulting variation of local 
  lift 
  coefficient shows low cr at the root and very 
  high c, at the tip. This effect may be appre- 
  ciated by realizing that the wide chords at 
  the root produce low lift pressures while the 
  very narrow chords toward the tip are sub- 
  lift pressures.. The varia- 
  ject to very high 