Long permanence high altitude airships: the opportunity of hydrogen

European Transport Research Review

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Table 4 Reference values for calculation

Altitude	c(H₂)	c(He)	A	A_front (H₂)	A_front (He)	d_id (H₂)	d_id (He)	V^2/3(H₂)	V^2/3(He)	V^1/3(H₂)	V^1/3(He)
[m]	[m]	[m]	[m²]	[m²]	[m²]	[m]	[m]	[m²]	[m²]	[m^2]	[m^2]
0.00	4.28	4.64	124920	1881.30	2039.81	5.02	5.41	4977.56	5253.37	70.55	72.48
1000.00	4.71	5.11	125016	2073.14	2247.82	5.50	5.92	5310.44	5604.70	72.87	74.86
2000.00	5.21	5.64	125130	2289.73	2482.66	6.02	6.49	5674.15	5988.56	75.33	77.39
3000.00	5.76	6.25	125268	2534.97	2748.56	6.61	7.12	6072.39	6408.86	77.93	80.06
4000.00	6.40	6.94	125435	2813.47	3050.52	7.27	7.83	6509.37	6870.06	80.68	82.89
5000.00	7.12	7.72	125637	3130.75	3394.54	8.01	8.62	6989.99	7377.31	83.61	85.89
6000.00	7.94	8.61	125883	3493.41	3787.76	8.84	9.51	7519.88	7936.57	86.72	89.09
7000.00	8.89	9.64	126185	3909.40	4238.79	9.78	10.50	8105.59	8554.72	90.03	92.49
8000.00	9.98	10.82	126557	4388.30	4758.04	10.83	11.63	8754.71	9239.82	93.57	96.12
9000.00	11.24	12.18	127018	4941.79	5358.17	12.02	12.89	9476.20	10001.28	97.35	100.01
10000.00	12.70	13.77	127592	5584.09	6054.59	13.36	14.32	10280.47	10850.11	101.39	104.16
11000.00	14.40	15.61	128311	6332.73	6866.31	14.87	15.93	11179.91	11799.40	105.74	108.63
12000.00	16.86	18.28	129439	7414.37	8039.08	16.98	18.16	12419.21	13107.37	111.44	114.49
13000.00	19.74	21.40	130884	8680.76	9412.17	19.35	20.66	13795.89	14560.33	117.46	120.67
14000.00	23.11	25.06	132731	10163.46	11019.80	21.97	23.43	15325.17	16174.36	123.79	127.18
15000.00	27.05	29.33	135089	11899.34	12901.95	24.89	26.49	17023.93	17967.24	130.48	134.04
16000.00	31.68	34.34	138091	13931.77	15105.62	28.09	29.86	18911.04	19958.91	137.52	141.28
17000.00	37.09	40.21	141901	16311.32	17685.66	31.61	33.53	21007.31	22171.34	144.94	148.90