Some articles on air, air breathing:
... An air-breathing jet engine typically has a much larger specific impulse than a rocket for example a turbofan jet engine may have a specific impulse of 6,000 seconds or more at sea level whereas a rocket ... An air-breathing engine is thus much more propellant efficient than a rocket engine, because the actual exhaust speed is much lower, the air provides an oxidizer, and air is used as ... While the actual exhaust velocity is lower for air-breathing engines, the effective exhaust velocity is very high for jet engines ...
... They are obligate air-breathers, requiring access to surface air to breathe in poorly oxygenated water ...
... SABRE (Synergistic Air-Breathing Rocket Engine) is a concept under development by Reaction Engines Limited for a hypersonic precooled hybrid air breathing rocket engine ... SABRE is an evolution of Alan Bond's series of liquid air cycle engine (LACE) and LACE-like designs that started in the early/mid-1980s for the HOTOL project ... The air breathing mode combines a turbo-compressor with a lightweight air precooler positioned just behind the inlet cone ...
Famous quotes containing the words breathing and/or air:
“To fair Fideles grassy tomb
Soft maids and village hinds shall bring
Each opening sweet of earliest bloom,
And rifle all the breathing spring.”
—William Collins (17211759)
“My companion and I, having a minutes discussion on some point of ancient history, were amused by the attitude which the Indian, who could not tell what we were talking about, assumed. He constituted himself umpire, and, judging by our air and gesture, he very seriously remarked from time to time, you beat, or he beat.”
—Henry David Thoreau (18171862)