Iran has made a series of engine tests on the missile, and a first test flight could come late this year or early next year.

The first engine test on the Trent was made in June 2010.

Pending a successful engine test in June 2011, the company will begin Phase 3 of development with the first orders expected around 2011-2013.

There are also support buildings, a vertical assembly building, and an engine test stand among other structures.

It soon became clear that the workshop would not survive by only conducting engine tests.

So the need arose to build a profitable line of production in order to finance ongoing engine tests.

Each plane may have been started once or twice for an engine test, but the birds had never left the ground.

This causes one of the boosters to ignite during the engine test.

Yes, on the engine tests I ran for him this morning.

A series of engine tests set to begin in January also should give a boost to the X-33 program, officials said.