Consider two engines $\mathrm{P}$ and $\mathrm{Q} .$ In $\mathrm{P}$, the high pressure turbine blades are cooled with a bleed of $5 \%$ from the compressor after the compression process and in $\mathrm{Q}$ the turbine blades are not cooled. Comparing engine $\mathrm{P}$ with engine $\mathrm{Q}$, which one of the following is NOT TRUE?

(A) Turbine inlet temperature is higher for engine $\mathrm{P}$

(B) Specific thrust is higher for engine $\mathrm{P}$

(C) Compressor work is the same for both $\mathrm{P}$ and $\mathrm{Q}$

(D) Fuel flow rate is lower for engine $\mathrm{P}$

Consider two engines $\mathrm{P}$ and $\mathrm{Q} .$ In $\mathrm{P}$, the high pressure turbine blades are cooled with a bleed of $5 \%$ from the compressor after the compression process and in $\mathrm{Q}$ the turbine blades are not cooled. Comparing engine $\mathrm{P}$ with engine $\mathrm{Q}$, which one of the following is NOT TRUE?

(A) Turbine inlet temperature is higher for engine $\mathrm{P}$

(B) Specific thrust is higher for engine $\mathrm{P}$

(C) Compressor work is the same for both $\mathrm{P}$ and $\mathrm{Q}$

(D) Fuel flow rate is lower for engine $\mathrm{P}$

1 Answer

127 votes

(D) Fuel flow rate is lower for engine $\mathrm{P}$

127 votes

127