  We propose a new type of superradiant laser based on a hot atomic beam
traversing an optical cavity. We show that the theoretical minimum linewidth
and maximum power are competitive with the best ultracoherent clock lasers.
Also, our system operates naturally in continuous wave mode, which has been
elusive for superradiant lasers so far. Unlike existing ultracoherent lasers,
our design is simple and rugged. This makes it a candidate for the first widely
accessible ultracoherent laser, as well as the first to realize sought-after
applications of ultracoherent lasers in challenging environments.
