. 2023 Aug 30;16(17):5929. doi: 10.3390/ma16175929

Table 3.

Specimen specifications.

No.	Specimen	Exposed Surface Shape and Test Condition	Specimen Length or Thickness (mm)	Carbon-Phenolic Recession Layer Thickness (mm)	Thermocouple Measurement Location from Specimen Stagnation Point (mm)
No.	Specimen	Exposed Surface Shape and Test Condition	Specimen Length or Thickness (mm)	Carbon-Phenolic Recession Layer Thickness (mm)	TC1	TC2	TC3
1	Flat-20-1	Flat and stationary	55	35	25	35	45
2	Flat-20-2	Flat and transient	55	35	25	35	45
3	Flat-15-1	Flat and stationary	50	30	20	30	40
4	Flat-15-2	Flat and transient	50	30	20	30	40
5	Flat-10-1	Flat and stationary	45	25	15	25	35
6	Flat-10-2	Flat and transient	45	25	15	25	35
7	Hemi-20-1	Hemispherical and stationary	66.88	46.88	36.88	46.88	56.88
8	Hemi-20-2	Hemispherical and transient	66.88	46.88	36.88	46.88	56.88
9	Hemi-15-1	Hemispherical and stationary	61.88	41.88	31.88	41.88	51.88
10	Hemi-15-2	Hemispherical and transient	61.88	41.88	31.88	41.88	51.88
11	Hemi-10-1	Hemispherical and stationary	56.88	36.88	26.88	36.88	46.88
12	Hemi-10-2	Hemispherical and transient	56.88	36.88	26.88	36.88	46.88

For all specimens, silica-phenolic insulating layer thickness = 20 mm. For all specimens, TC1, TC2, and TC3 locations from the bottom surface were 30 mm, 20 mm, and 10 mm, respectively.