What is Normal Rated Thrust in Pounds?

What is Normal Rated Thrust in Pounds?

• A. 12,670 lbs
• B. 13,790 lbs
• C. 12,000 lbs
• D. 14,000 lbs

Answer: (A)

Normal rated thrust is the engine’s certified thrust output under standard operating conditions used for performance planning. For the CRJ-550, each CF34-8C5 engine is rated at 12,670 pounds-force in the normal regime. This is the baseline you use in performance calculations like takeoff distance and climb, not the maximum thrust you could get with special settings or testing. Since there are two engines, the total thrust in the normal regime would be 25,340 lbf, but the per-engine value of 12,670 lbf is the figure used for this question.

Normal rated thrust is the engine’s certified thrust output under standard operating conditions used for performance planning. For the CRJ-550, each CF34-8C5 engine is rated at 12,670 pounds-force in the normal regime. This is the baseline you use in performance calculations like takeoff distance and climb, not the maximum thrust you could get with special settings or testing. Since there are two engines, the total thrust in the normal regime would be 25,340 lbf, but the per-engine value of 12,670 lbf is the figure used for this question.