Thermal Characteristics of a Stratospheric Airship with Natural Convection and External Forced Convection

Table 4

Heat flux of the lower envelope calculated by different forced convection equations.

Equation	Time
Equation (viii)	5:00	0	0	0	3.83	237.71	175.11	7.24	59.19
	8:00	0	7.45	20.38	3.83	237.71	195.30	2.18	71.70
	12:00	0	8.35	39.18	3.83	237.71	209.97	−1.10	80.19
	16:00	0	7.45	20.38	3.83	237.71	196.75	0.23	72.56
	19:00	0	0	0	3.83	237.71	176.27	5.40	59.94
Equation (ix)	5:00	0	0	0	3.83	237.71	144.24	3.91	93.38
	8:00	0	7.45	20.38	3.83	237.71	155.08	1.33	112.85
	12:00	0	8.35	39.18	3.83	237.71	163.15	−0.77	126.69
	16:00	0	7.45	20.38	3.83	237.71	155.60	0.13	113.76
	19:00	0	0	0	3.83	237.71	144.57	3.03	93.98