Welcome Guest. Sign in or Signup

1 Answers

Critical engine and P-factor

Asked by: 2768 views Aerodynamics, Commercial Pilot

On a twin engine, with one engine inoperative and talking about P-factor and accelerated slipstream, is accelerated slipstream a direct by-product of P-factor? And is P-factor like turning tendencies on a single engine airplane, existent in climbs or high angle of attacks? Or is felt constantly with one engine inoperative regardless of angle of attack?

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

1 Answers

  1. Best Answer


    eazyvictor on Feb 12, 2018

    The accelerated slipstream is always there, however, as the angle of attack is increased, the unequal lift as a result of the increased angle of attack shifts the lift more to the right. On the right hand engine (when viewed from above) this lift shifts more right (due to p-factor) which moves it farther from the CG thus imparting a greater rolling moment. As for the second part, it works just like a single engine airplane too.

    +1 Votes Thumb up 1 Votes Thumb down 0 Votes


The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.