A family of 5 grids in fastar format are included in the directories.
These grids are in CGNS, ADF format, CGNS version is 2.5-4.
These grids were generated and made available by JAXA.  
JAXA POCs: Dr. Takashi Ishida (ishida.takashi@jaxa.jp) and Dr. Mitsuhiro Murayama (murayama.mitsuhiro@jaxa.jp)
The README document provided by JAXA is included below.
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30P30N grid (Rev.1)			Apr 13, 2018

  Dimension
    Chord : 18 inch
    Span  :  2 inch

  Grid Level
    L1 : coarse		(~x2.0 size of cells in each direction)
    L2 : medium		(~x1.5 size of cells in each direction)
    L3 : fine		( x1.0 = Baseline Grid)
    L4 : extra-fine	(~x1/1.5 size of cells in each direction)
    L5 : super-fine	(~x1/2.0 size of cells in each direction)

  # of points (cells) in span direction @ 2-D volume file
    L1 - L5 : 2 (1)

  # of points (cells) in 2-D volume
    L1 :   129,080 (   63,957)
    L2 :   226,496 (  112,474)
    L3 :   524,174 (  260,909)
    L4 : 1,169,978 (  583,226)
    L5 : 2,091,988 (1,043,636)

  # of points (cells) in span direction @ 3-D volume file
    L1 : 136 (135)
    L2 : 181 (180)
    L3 : 271 (270)
    L4 : 406 (405)
    L5 : 541 (540)

  # of total points (cells) in 3-D volume
    L1 :   8,777,440 (  8,634,195)
    L2 :  20,497,888 ( 20,245,320)
    L3 :  71,025,577 ( 70,445,430)
    L4 : 237,505,534 (236,206,530)
    L5 : 565,882,754 (563,563,440)

  Initial spacing normal to viscous walls (inch)
    L1 : ~2.6E-04
    L2 : ~2.0E-04
    L3 : ~1.3E-04
    L4 : ~8.7E-05
    L5 : ~6.5E-05

  Boundary Condition is the same as fastar format.