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Physics/Electronic Panel Doors in Commercial Airplanes.

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Question
Dear Prof Steve

Is there a single front door near cockpit in commercial planes for passengers and crew members for entry - boarding and exit out of the airplane ?.

If not do you feel there can be also a Rear door constructed near the tail wing in commercial planes ?. Is it feasible to construct a rear door ?.

The Rear door will be only for passengers who are boarding and exit out
of the airplanes while the Front door will be only for the airplane crew members including the pilot, copilot ?.

Do you feel a electronic panel can be constructed on the airplane Front door only for the aircraft crew members who are given identity electronic cards ?. The Front door will be opened only from inside and outside the plane when the electronic card is swapped by the aircraft crew member for entry and exit out of the airplane.

Do you feel this also be extended for the cockpit electronic panel door   where the pilot, copilot has to swap the electronic card to enter and exit the cockpit ?.

Do you feel this may enhance security on the commercial airplane ?.


Thanks & Regards,
Prashant S Akerkar

Answer
Hello Prashant,

Is there a single front door near cockpit in commercial planes for passengers and crew members for entry - boarding and exit out of the airplane ?.
For many of them, yes.

Is it feasible to construct a rear door ?.
Yes. Several including the 727 have, or have had, a rear door.

The Rear door will be only for passengers who are boarding and exit out
of the airplanes while the Front door will be only for the airplane crew members including the pilot, copilot ?.
Could be that way I suppose.

Do you feel a electronic panel can be constructed on the airplane Front door only for the aircraft crew members who are given identity electronic cards ?.
Yes of course.

Do you feel this also be extended for the cockpit electronic panel door   where the pilot, copilot has to swap the electronic card to enter and exit the cockpit ?.
Yes of course.

Do you feel this may enhance security on the commercial airplane ?.
I don't see any advantage in having the passenger door in the rear. I believe a locking cockpit door is current practice.

I hope this helps,
Steve

Physics

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Steve Johnson

Expertise

I would be delighted to help with questions up through the first year of college Physics. Particularly Electricity, Electronics and Newtonian Mechanics (motion, acceleration etc.). I decline questions on relativity and Atomic Physics. I also could discuss the Space Shuttle and space flight in general.

Experience

I have a BS in Physics and an MS in Electrical Engineering. I am retired now. My professional career was in Electrical Engineering with considerable time spent working with accelerometers, gyroscopes and flight dynamics (Physics related topics) while working on the Space Shuttle. I gave formal classroom lessons to technical co-workers periodically over a several year period.

Education/Credentials
BS Physics, North Dakota State University
MS Electrical Engineering, North Dakota State University

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