The Dadras system is an autonomous quadratic dynamical system given by
 |  |  |
(1)
|
 |  |  |
(2)
|
 |  |  |
(3)
|
where 
, 
, 
, 
, and 
are positive parameters (Dadras and Momeni 2009). The state
variables are 
, 
, and 
, and primes denote derivatives
with respect to time 
. The origin is an equilibrium
point. The Jacobian of the vector
field there has eigenvalues 
, 
, and 
, so the origin is a saddle
point. The vector field has constant divergence 
, so the flow contracts
phase space volume if 
. Dadras and Momeni (2009) report numerical examples
of strange attractors with different numbers
of scrolls, or spiral-shaped lobes in phase
space, including a double-scroll attractor.
Their two-wing example uses 
, 
, 
, 
, and 
, with 
.
