Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
Edward9
on July 14, 2020
|
parent
|
context
|
favorite
| on:
Andean condor can fly for 100 miles without flappi...
Fly? Isn't it basically gliding?
WJW
on July 14, 2020
[–]
Except for rockets, everything in the air is gliding. Some things are also powered, but that does not makes them glide less, just more.
starpilot
on July 14, 2020
|
parent
|
next
[–]
In aviation, by definition gliding is unpowered flight, like coasting in a car. If you're doing performance calculations, there are different equations for gliding and powered flight.
ajuc
on July 14, 2020
|
parent
|
prev
[–]
Ballons aren't gliding.
Helicopters and quadcopters also aren't gliding.
WJW
on July 14, 2020
|
root
|
parent
[–]
Helicopters and quadcopters provide lift through rotary wings, thereby gliding. Fair point about balloons though.
ajuc
on July 14, 2020
|
root
|
parent
[–]
That's like saying cars are moving by turning (because their wheels do that).
meheleventyone
on July 14, 2020
|
root
|
parent
[–]
Cars are moved by turning though. From the pistons driving the engine, through the gearbox and drivetrain to the wheels.
Join us for
AI Startup School
this June 16-17 in San Francisco!
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search:
