Russia Develops Revolutionary Ammonia Rocket Engine

On 10/05/2012 3:12 AM, wrote:
"Power engineering manufacturer Energomash has
started development of a new rocket engine which
could vastly reduce the cost of rocket launches and
avoid the need to produce hydrogen for fuel, the
makers say.

The new rocket, which will be around 30 percent
more efficient than exising designs, works on a
completely novel fuel mixture of acetylene and
ammonia (atsetam)."

See:

http://www.space-travel.com/reports/...in e_999.html

30% more efficient compared to what propellant? I think such claims
should be taken with a good measure of sceptism and doubt.