image004

image004



Tablc I

Energy Output per 1’ourtd of *FueF* ConMjmed for Bdtcrie* and Fud Cdi* C omparcd (o Cooventional Hydrocarbon-fueled Engine*

Air Breałbers1: ContentionalEngine* (Efticiency

Jet fud (kerosene) Hydrogen

BuUeries dc Fud Cells (Efticiency Hydrogen *    Beryllium

Aluminum


wau-hours =* 33%) per Ib fud 2,000

5.000

~ 67%)

10.000 4.750 2.150

Sdf-Contnined: Conventional Engine* (Efticiency ^ 33%)    + oxygen

Jet fud and Oxygen    500

Hydrogen and Oxygcn    560

Ran er i es A Fud Cells (Efticiency ^ 67%)

Hydrogen and Oxygcn    1,120

Beryllium and Oxygcn    1.700

Aluminum and Oxygci>    1.140

Lithium and Huorinc    1,670


wau-hours per Ib. fud

1 Notc that for t) vchicie to be rcchuręcaNc in spocę. it nrnu not discurd uwd fud. This meuns th<u an air-breathing vehide gets htun icr thtring operation. which seems like a distuFantagr Rut perhaps tht suppfy of oxvgen hrouąht bttek

to the nunher ship is wtlcomeii


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