Articles / Blog - Ultralight Design Concepts

Discussion in 'Aircraft Design / Aerodynamics / New Technology' started by DaveD, Oct 21, 2017.

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  1. Nov 20, 2017 #61

    proppastie

    proppastie

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    Your tax dollars at work.
     
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  2. Nov 22, 2017 #62

    Giggi

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    I'd think the most common reason swept wings are used on subsonic planes is because of their inherent stability in the yaw and pitch axes, which lets them replace the tail on weight-shift trikes, plus the fact that the wingtips are behind the COG so they can function as the horizontal tail on "tailless" planes.

    Great articles though thank you
     
  3. Nov 23, 2017 #63

    DaveD

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    Last edited: Nov 23, 2017
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  4. Nov 27, 2017 #64

    DaveD

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  5. Nov 28, 2017 #65

    DaveD

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  6. Nov 30, 2017 #66

    DaveD

    DaveD

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    That's All Folks!

    The last article from my back catalogue "Into the Vortex" is now posted: Here

    I'll post the full index to this thread in the next couple of days for easy reference.

    I hope you enjoyed them, and thanks for all the "likes"!

    Cheers

    Dave

    P.S. If I find the time (and the motivation) I may write some more. I might even go all technical and include some math. Just don't count on getting more than one a month!
     
  7. Nov 30, 2017 #67

    BJC

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    Please do!


    BJC
     
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  8. Aug 30, 2018 #68

    DaveD

    DaveD

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    ...and then 10 months went by without me doing anything!

    But now I'm back, and I'm taking on the composites topic.

    Composites Part 1 - Composing Composites

    I haven't posted the full index for a while so to save you digging back through this thread:

    Introduction - In The Beginning
    Designing My Own - Design Notes
    Configuration & Layout - Configuration & Layout
    Wing Shape - Wing Shape
    Aerofoil Selection - Aerofoil Selection
    Drag - Such a Drag
    Materials - Material World
    Flaps - All in a Flap
    Landing Gear - Happy Landings
    Stability - Introduction - Are You Unstable?
    Stability - Longitudinal - Perfect Pitch?
    Stability - Weight & Balance - A Weighty Issue
    Stability - Lateral & Directional - Thinking Laterally
    Fuel Systems - More Fuel You?
    Cooling - Keepin’ Cool
    Controls - Control Freak
    Trim Systems - Just a Trim
    Cockpit Design - The Workshop?
    Propellers - Prop Me Up
    Spins - All in a Spin
    Design for Spin Safety - The Spin Doctor
    Aircraft Loads - Shouldering the Load
    Limit Loads for Design - Feel The Force
    Gust Loading - Gone With The Wind
    Stress, Strain, Strength & Stiffness - Biscuits, Jelly, Nylon & Steel
    Load Paths - The Path To Enlightenment
    Design for STOL - Short & Sweet
    Propeller Effects - The ‘P’ Factor
    Swept Wings - A Clean Sweep
    Joint Design - Keeping It Together
    Glued/Bonded Joints - Stick With It
    Bolted Joints - A Bolt From The Blue
    Bolts in Shear - Shear Excitement
    Riveted Joints - Riveting Stuff
    Fatigue - Chronic Fatigue
    Designing for Fatigue - Battle Fatigue
    V-Tails - To ‘V’ or not to ‘V’
    Vortex Generators - Into The Vortex
     
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  9. Aug 30, 2018 #69

    addicted2climbing

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    Wow DaveD I just found this and cant wait to read through it.
     
  10. Sep 3, 2018 #70

    DaveD

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    Thanks, I hope you find it useful!
     
  11. Sep 4, 2018 #71

    DaveD

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    Ok, there's no easy way to put this, it's time for some mathematics...

    Composites Part 2 - The-Matrix
     
  12. Sep 5, 2018 #72

    pwood66889

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    Looking forward to tensors!
     
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  13. Sep 7, 2018 #73

    dsigned

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    Wow, these are great. I've only had time to skim them, but they seem well explained and a good balance between depth and accessibility.
     
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  14. Sep 14, 2018 #74

    DaveD

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  15. Sep 14, 2018 #75

    pwood66889

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    You have!! However, "[FONT=&quot]will have 2⁴ = 12 components (arranged in a 4×4 matrix)" [/FONT]did draw my eye. Yes, my BS is certified (in math). Sorry so picky; 2^4 is 16 <Base ten>.
    Percy in NW FL, USA
     
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  16. Sep 14, 2018 #76

    DaveD

    DaveD

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    I probably should have held off on the glass of wine until after I gave it a proof read!

    Thanks for pointing that out Percy, I'll fix it when I get home from work (and I promise I do know my four-times-table... on a good day!). It really does show the value of a fresh pair of eyes, I must have read the whole thing at least three times before I posted it... and it's not like it's a subtle error!

    Cheers

    Dave
     
  17. Sep 16, 2018 #77

    pwood66889

    pwood66889

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    Wish I could join you in that glass of wine, Dave.
    I learned long ago that when one key puncher puts the holes in the cards, another key puncher is used to verify the holes! Thus, my eye MAY pick some thing out. I once asked a home builder why he had a washer on one bolt on the Fokker wannabe he was building, but not at the same bolt on the opposite side. He could not believe he had missed it! Something in my brain, I guess... that wine??? :)
    Regards, Percy
     
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