Also known as FIV or cat AIDS, feline immunodeficiency virus is an infectious disease caused by a retrovirus belonging to the lentivirus family. It is in the same family as the feline leukemia virus (FeLV), and is similar to the HIV virus in humans. FIV infects both domesticated cats, lions, tigers, pumas and cheetahs.
This map only incorporates the wide-open throttle condition, but adding a third independent axis of throttle position can create a 3D performance map; it is noted that throttling directly affects efficiency via an inverse proportion, and maximum efficiency and minimum BSFC is realized at 100% throttle.
The amount of preheating required so that natural gas will come back to its initial temperature after throttling is simply the throttling temperature drop times the specific heat capacity times the mass flow rate. Example. A pipeline near a chemical plant transports natural gas at 1200 psig (8.27 MPag), 68 oF (20 oC).