β Scribed by D. Verstraete; P. Hendrick; P. Pilidis; K. Ramsden
No coin nor oath required. For personal study only.
Hydrogen is since long seen as an outstanding candidate for an environmentally acceptable, future aviation fuel. Since the first studies, the design of light yet highly insulated tanks for cryogenic liquid hydrogen has been identified as one of the key enabling technologies. Despite this early recognition, the design of the tanks is nowadays still seen as crucial as aircraft tanks differ significantly from existing tanks in the automotive or aerospace sector. To enable system level feasibility studies of hydrogen fueled aircraft, a preliminary design model for aircraft liquid hydrogen tanks is developed for both foam and multilayer insulations. This model is then used to design tanks for a small regional airliner as well as a large long range transport aircraft. Foam based and multilayer insulations are compared and the sensitivity of the tank weight to the fuselage diameter and the mission fuel load is assessed. The influence of a 'hold' period before take-off is analyzed too. As the developed model is intended for use in the preliminary aircraft design phase, structural design or attachment issues are not addressed.
π SIMILAR VOLUMES
Solar/hydrogen home nearing completion R enewable Energy International, a US-based specialist in distributed renewable energy generation and pointof-use systems, reports that the first solar/hydrogen home in North America has now received all necessary permits, and is scheduled for completion shortl
## IdaTech demos tactical generator at CERDEC I n the US, IdaTech has installed and operated a 3 kW Tactical Fuel Cell Generator (TFCG) developed for the US Army. The successful installation of the TFCG indicates additional progress towards providing defense organizations with a quiet, fuel cell-
The transportation sector consumes about a quarter of final energy in Japan and worldwide, and presently most of the energy is supplied by petroleum. For global environment and resources, it is important to seek possibilities of replacing a substantial part of the transportation energy by nuclear en
This article addresses the issue of the diffusion of hydrogen cars in the market, particularly the competition with electric cars for the replacement of conventional vehicles. Using the multi-technological competition model developed by Le Bas and Baron-Sylvester's (Diffusion technologique non binai