Multifidelity Multidisciplinary Design Optimization of Integral Solid Propellant Ramjet Supersonic Cruise Vehicles

Table 1

Mean relative square error.

Num. of data	4	9	16
Co-Kriging	0.8580	0.1227	0.1072
Delta-Kriging	16.6027	10.8799	12.1306
Polynomial	14.6059	12.0632	13.4713