Carbon Cycle Chemical Reactions Involved: Photosynthesis: Air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a by product. During photosynthesis plants use carbon dioxide and produce oxygen.
Similar to shore power for ships, a ground power unit (GPU) may be used to supply electric power for an aircraft on the ground, to sustain interior lighting, ventilation and other requirements before starting of the main engines or the aircraft auxiliary power unit (APU).
The two different types of fuel transfer that auxiliary tanks use are gravity feed, and solenoid activated gravity feed. With the low tech gravity feed, you donât have to do anything â other than keep your main tank cap on. I guarantee someone will leave it off once though, and youâll wind up dumping fuel on the ground.