Turbine starter valve

A turbine starter (10) including a valve (40) to modulate an amount of air permitted to flow to a turbine section (20), a sensor (50,51) to detect a characteristic of the air at locations defined between the valve (50) and the turbine section (20) and downstream from the turbine section (20) and an electrically powered motor (60) coupled to the valve (40) and the sensor (50,51) to control the valve (40) to modulate the amount of the air permitted to flow to the turbine section (20) in accordance with the detected characteristic.