AQUARIUS Skydiver: is a reusable, cost-efficient and environmentally benign Hot Water Rocket. It can be launched as a single stage rocket with an ejectable cone end. The launch with an existing and compatible upper stage is possible as well.

Specifications of AQUARIUS Skydiver

			Lower Stage	Upper Stage
	Lenght	[m]	2.6	1.5
	Diameter	[m]	0.21	0.13
	Total Mass	[kg]	53	13.5
	Water Mass	[kg]	16	3
	Pressure Vessel		4 mm St 35.8	2 mm St 37
	Tank Volume	[l]	20.5	4
	Pressure	[bar]	50	70
	Temperature	[°C]	264
	Heating Power	[W]	2 x 3000	1 x 950
	Heating Time	[min]	ca. 60
	Thrust	[N]	4000	400
	Nozzle		Laval, 4 mm Aluminium
	Exhaust Velocity	[m/s]	500
	Discharging Time	[s]	4	2.5
	Altitude	[m]	200 - 300	500