Propellers - I

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  • เผยแพร่เมื่อ 17 ก.ย. 2024

ความคิดเห็น • 23

  • @doietaa
    @doietaa 8 ปีที่แล้ว +2

    i saw all ur videos...really very helpful.keep it up..

    • @poh
      @poh  8 ปีที่แล้ว

      Thank you! :) Stay tune for more.

    • @doietaa
      @doietaa 8 ปีที่แล้ว

      plz make some videos on jet engine and instrument approaches(VOR,DME,ILS) etc plz... hope to see new videos..:)

    • @poh
      @poh  8 ปีที่แล้ว

      Will do soon! :)

  • @psidhu1979
    @psidhu1979 8 ปีที่แล้ว +4

    Pretty good. I have seen some of earlier videos which were good, however I feel you have made critical errors in this brief.
    Things like; as the IAS increases you need to apply progressively more right rudder on 152 or 172 is incorrect. The prominent yaw is highest at low speeds. With the increase in IAS the left yaw decreases.
    Also you mention the clockwise rotating prop and then go on to say "this causes yaw to the left" further to that you said that "this is the slipstream effect". However you did not explain at all what the slipstream effect is!
    Gyroscopic effect IS NOT THE SAME AS 'P Factor'- This is TOTALLY INCORRECT!! I think you MUST edit that part of the video.
    You mention the "right side blade" whilst explaining the p factor, yet you touch with your pen, the left-hand side of the prop blade when viewed from the pilot's perspective from the inside of the cockpit! If this was to be the case the A/C would yaw to the right!!
    It's imperative that you explain on what type of undercarriage configuration would you experience the p factor??? If you are talking about the 152 and 172 this would not hold true!! the Prop is 90 degrees to the horizontal in a tricycle U/C!
    Also no explanation was given as to why the torque effect makes the a/c yaw to the left!
    ______________________________________________________________________________________
    It is TOTALLY INCORRECT to say that the "pusher is behind the wing" and " the puller is ahead of the wing". Fundamentally wrong!
    Push and Pull design is based on the position of the prop in reference to the ENGINE! NOT THE WING
    When talking about the Prop face and Back you need to mention that you are talking about the BLADE and NOT THE ROTOR HUB!! That's is what it implies from your drawings. Perhaps a quick edit of that as well.
    Just my 2 cents mate. Good luck and good work.

    • @poh
      @poh  8 ปีที่แล้ว

      Thanks a lot for all that actually. And I'm guessing you are an aircraft engineer or aeronautical background? :D Well anyway the deal with my videos was yes must be many many mistakes honestly. But I'm trying to improve on all this. And I have made a note of all that, and will include all this in the description. Thanks for your comment.

    • @psidhu1979
      @psidhu1979 8 ปีที่แล้ว +1

      +DGCA Technical No I am a flight instructor and therefore understand the need to use the correct wording. A student could get very confused if the correct words are not used.

  • @zeedas3450
    @zeedas3450 8 ปีที่แล้ว +3

    thanks for the uploads all are very helpfull. Could you please do a video on jet engines and aircraft systems if possible.

    • @poh
      @poh  8 ปีที่แล้ว +1

      On the way :) After this planning for that only..

  • @wingman8588
    @wingman8588 7 ปีที่แล้ว +2

    Hi firstly thank you for all the videos you upload they are a huge help to all of us and please keep uploading videos...however I had a doubt in this video at 13:45 in this video you mention the formulae for prop efficiency in one formula the 1st, BHP is in the denominator and in the 2nd formula below the 1st, BHP is written in the Numerator...just wanted to bring that to your attention and find out which one is the right one....thanks.

    • @poh
      @poh  7 ปีที่แล้ว

      Firstly Thanks Zirak!
      Both are equally right. They are different formulae for the same efficiency. If you noticed the their numerator and denominator are different respectively. This is because THP an IHP are not same. THP is Thrust Horse Power which is the actual horse power developed by the the piston which is always less than the BHP. IHP is Induced Horse Power which is the horse power generated after four strokes of the engine.
      So use both the formulae according to the question asked.
      Hope it is clarified. Cheers! :)

  • @zeedas3450
    @zeedas3450 8 ปีที่แล้ว +1

    thanks a ton. all videos are super

  • @anilraina3937
    @anilraina3937 8 ปีที่แล้ว +2

    excellent work brother.can pls do same on flight mechanics and aerostructures

    • @poh
      @poh  8 ปีที่แล้ว +1

      I'm not an aeronautical/aerospace engineer. So this is basically for pilot related subjects. So I can go only till the certain depth required for my field. Flight mechanics I have uploaded already whatever I could. I don't think I'll be able to explain anything for aerostructures, because that is not under my subject. Thanks and stay tuned for videos on jet and piston engines
      p.s. Why do you have such a weird name? AnilRaina what is the fee u will take for it sir

  • @dineshmaleri7139
    @dineshmaleri7139 4 ปีที่แล้ว

    Thank you sooooooo much

    • @poh
      @poh  4 ปีที่แล้ว

      You're welcome!

  • @akashbhati1900
    @akashbhati1900 7 ปีที่แล้ว

    thankyou for this sir what kind of degree and what kind of flying clubs i should find.. i am in noida. and what about the DGCA .

  • @shanthir1993
    @shanthir1993 4 ปีที่แล้ว

    Sir I am working on design of aircraft propellers... I have a doubt on how to give blade angle and sweep angle of a blade.

    • @poh
      @poh  4 ปีที่แล้ว +1

      That I'll not be able to help actually! I'm not from design or aircraft engineering background! Sorry!

  • @akashbhati1900
    @akashbhati1900 7 ปีที่แล้ว +1

    sir i have completed my 12 class and my age is 19 still and i want to apply for CPL BUT i have no knowledge could you send me detail...anyone who can explain plezzz ....

    • @poh
      @poh  7 ปีที่แล้ว +1

      +Akash Bhati Pursue a degree first. Enquire at all major flying clubs regarding fee structure and all.

  • @bhaskarjawale1834
    @bhaskarjawale1834 4 ปีที่แล้ว

    Can I get soft copy of this

    • @poh
      @poh  4 ปีที่แล้ว

      Of what?