Tag Archives: hole

What Is That Hole in the Tail of an Airplane?

What’s that hole in the tail? A giant screw hole for towing the aircraft? An air conditioning intake? It’s part of what’s called an auxiliary power unit. An airliner’s APU is a hidden extra engine, typically a gas turbine engine like jet … Continue reading

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What Exactly Is a Black Hole Event Horizon and What Happens There ?

What Exactly Is a Black Hole Event Horizon and What Happens There ? Continue reading

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Released the First-Ever Image of a Black Hole

What Am I Looking At? For the first time, we can directly observe a black hole as it sucks light and matter beyond the point of no return. On Wednesday, an international coalition of scientists that came together to form … Continue reading

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Powering a Starship With a Black Hole

Powering a Starship With a Black Hole Continue reading

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Strange Deep Hole on Mars

Strange Deep Hole on Mars Continue reading

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Improvement of the fatigue limit – Joints

Improvement of joints with rows of bolts or rivets A simple double strap joint with two rows of bolts at each side of the joint is shown in the following Figure. Figure 1  It could be a good design from … Continue reading

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