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I'm a structural engineer, so when I see forces I like to compare them to common forces I design for in buildings. That engine produces 115,000 lb of thrust. I
by ggcdn 8y ago
I'm a structural engineer, so when I see forces I like to compare them to common forces I design for in buildings.
That engine produces 115,000 lb of thrust. If I take typical rebar, fy=60ksi, so I will need about 1.916in2, which is about 2 #9 bars.
Two engines per plane, so I could hold back the 777 at full power with 4 #9 rebars. Not bad!
- pohl 8y agoThe article says 105,000lb.
- ggcdn 8y agoYou're right, it was the GE-90 that produced 115k. Rest assured, however, that the quantity of #9 rebars remains unchanged.
- Stryder 8y agoThat's pretty cool!
- thatoneuser 8y agoSo if you secured 4 of these rebar perpendicular to the direction of the plane and tied a strong rope from plane to rebar, the result would be the plane couldn’t move and the rebar wouldn’t break or bend?
- ggcdn 8y agoNo, I assumed the rebar is orientated as the 'strong rope'. If the rebar were positioned as you say, they would yield/bend quite easily.