3 ms·
You need to consider the volumetric energy density, not the specific energy (which is energy per mass). LH2 has a high specific energy but pretty low volumetric
by _Microft 5y ago
You need to consider the volumetric energy density, not the specific energy (which is energy per mass). LH2 has a high specific energy but pretty low volumetric energy density which means that much larger tanks are needed to store the same amount of energy than for other fuels.
The conditions for storage of LH2 and demands on materials in contact with LH2 are much harder than for e.g. methane.
- ncmncm 5y agoLow mass density means you can't keep the LH2 in wing tanks. Inboard tankage might be unwise. Slinging tanks under the wings, alongside the engines, minimizes plumbing. It might seem like that would add a lot of drag, but aerodynamics is a very unintuitive science.