Home
Random
Log in
Settings
Donations
About Wiktionary
Disclaimers
Search
rocket equation
Language
Watch
Edit
English
edit
An Atlas V rocket. It will launch
New Horizons
. Thanks to the
rocket equation
, the rocket was huge relative to its payload: over a thousand times heavier than New Horizons itself. Moral: rockets are a brutally inefficient way to get into space.
Noun
edit
rocket
equation
(
uncountable
)
The equation for how much
delta-v
a rocket produces: Δv = v
e
ln(m
0
/m
1
); where Δv is delta-v, v
e
is effective exhaust velocity, ln is the
natural log
function, m
0
is initial mass of the rocket, and m
1
is final mass of the rocket.