Stored energy, wide energy range turbine starting engine

A method of achieving a desired ease of ignitability of fuel in a combustor of a particular volume comprising the steps of:

• a) applying an oxidant to an orifice at a pressure sufficient to choke the orifice;
• b) communicating oxidant passing through the choked orifice to said combustor and introducing the oxidant thereinto;
• and
• c) igniting fuel in the combustor;
• and
• d) thereafter reducing the pressure at which the oxidant is applied to the choked orifice.

A method of achieving a desired ease of ignitability of fuel in a combustor of a particular volume comprising the steps of:

• a) applying oxidant to an orifice at a pressure sufficient to cause the same to be choked;
• b) delivering part of the oxidant passing through the orifice to the combustor while causing the remainder of the oxidant passing through the orifice to bypass the combustor;
• c) introducing and igniting fuel into the combustor;
• and
• d) upon ignition of the fuel in the combustor, reducing the pressure of the oxidant applied to the orifice and changing the amount of the oxidant bypassing the combustor.