During startup of a turboshaft engine, which consequence results from insufficient bleed air?

💡 Explanation

Compressor surge occurs because inadequate bleed air hinders pressure equalization. Insufficient mass flow results in boundary layer separation and flow reversal in the compressor stage. Therefore surge is more likely than heat damage, rather than higher temperature issues given start condition durations.

• Which risk increases when a pilot commands rapid, full aileron deflection at high airspeed?
• Which mechanism prevents uncontrolled aircraft yaw arising from an engine failure during flight?
• Which outcome occurs when a refrigeration system uses R-410A refrigerant and experiences sustained superheat at the compressor inlet?
• Which outcome occurs when an engine piston cools unevenly?
• Which outcome occurs within an aircraft's electrical circuit when impedance decreases sharply?
• Which consequence results when hydraulic actuator's bleed control causes excess dampening?