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  1. Thread: A basic trainer

    by JLS
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    0
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    2,055

    A basic trainer

    I found Nicollier Menestrel II wing shape interesting for a single strut
    high wing braced aircraft, I'm open to any criticism and would find helpful
    your opinion about it. Empty weight is...
  2. Thanks for your answer Don; For those who...

    Thanks for your answer Don;

    For those who prefer GoogleSheets, here is a link on my GoogleDrive to share it:
    ...
  3. Rate of climb analysis for a fixed pitch propeller powered aircraft

    I did a spreadsheet(.XLSX) of the Snorri Gudmundsson book 'GA aircraft design' on chapter 18 'Performance Climb'. It is quite self
    explainatory, but I didn't used column Advance Ratio for the...
  4. Thread: roseparrakeet.org

    by JLS
    Replies
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    2,340

    roseparrakeet.org

    The Rose Parakeet biplane website has gone. It was a valuable source of information on this fine biplane.
  5. Replies
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    2,884

    In these few weeks reviewing my goals, I finally...

    In these few weeks reviewing my goals, I finally found it more appealing with a single strut on each wing
    forgot foldable wings and aluminium round spar, so no worry about jury struts.

    9315
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    Thanks for your answer. How to deal with...

    Thanks for your answer. How to deal with aluminium spar deflexion and plain flaps
    and aileron elasticity ? With aluminium and same modulus of elasticity, it seems
    there are no other option. Wood...
  7. Replies
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    Design and role of jury struts

    I can't figure out completely how jury struts work.

    I clearly understand that jury struts can help and suppress buckling
    of struts in compression (with spar in tension in negative load).
    I've...
  8. I recall it came from here...

    I recall it came from here
    https://commons.wikimedia.org/wiki/File:Ford_taunus_p3.svg
    BTW this car looks "really" like a GAZ :-)
  9. I didn't know even maker or country of origin....

    I didn't know even maker or country of origin. Thanks for info!
  10. Seaplane 3 view foldable on trailer (much cheaper than Icon A5)

    In flight

    ************

    9128

    On trailer

    ************
  11. Albeit a counterintuitive task, playing with...

    Albeit a counterintuitive task, playing with polars (airspeed/rate of descent and lift/drag coefficient)
    gives you a glimpse of a glider performance.

    ********

    9110

    ********

    9112
  12. A good description of shock cords is there...

    A good description of shock cords is there
    https://www.univair.com/content/Shock-Cords.pdf

    Example with a 1080 cord:

    9071

    *******************

    9073
  13. Strength of undercarriage & bungee cord shock absorbers design and dimension.

    In an all wood fuselage design similar to RagWing Roger Mann designs or Fisher Flying products
    I'm concerned with strength of undercarriage and dimension of bungee cord shock absorbers.I didn't ...
  14. Replies
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    Thanks for answering, PTC did the Pro Engineer...

    Thanks for answering, PTC did the Pro Engineer CAD suite (and recently Onshape Online CAD system) so I bet MathCad is a good product, and certainly old version too.
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    Computer algebra system

    Have you a prefered computer algebra system (free or not) ? There's a bunch of it nowadays
    look at
    https://en.wikipedia.org/wiki/List_of_computer_algebra_systems

    I'd prefer to have a Windows...
  16. Replies
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    Ask help from a local EAA counselor for needs of...

    Ask help from a local EAA counselor for needs of restoring it (fabric, engine, instruments). Nevada, IA is central, and I don't know if it's wet or not. I don't know if an emeraude is rare on the...
  17. Replies
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    8,984

    20000$ on barnstormers (search "emeraude") on...

    20000$ on barnstormers (search "emeraude") on that day. This fine airplane has the most pleasant control harmony and is a joy to fly.
    Put your 5000$ in for flying it safely (extensive carry-through...
  18. Self-launching (electric) motorglider, configuration and performance question

    Cross section of fuselage is enlarged by spar and position of pilot, passenger, side by side
    semi-reclined seated.

    What is your opinion about this configuration as cross section of fuselage is...
  19. Thread: Electric Nieuport?

    by JLS
    Replies
    22
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    13,129

    Fitting Graham Lee datasheet with rotax 503...

    Fitting Graham Lee datasheet with rotax 503 numbers gives you a CD0=0.07 (parasitic and interference
    drag of whole aircraft). It gives a L/D ratio of 7 (with induced drag K=0.0725), so I trust you...
  20. Thread: Electric Nieuport?

    by JLS
    Replies
    22
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    13,129

    It seems that high end(pricey) solutions for...

    It seems that high end(pricey) solutions for electric aircraft (engine, battery and its controller) come
    from here:
    https://www.mgm-compro.com/

    30-50kw electric motor...
  21. Thread: Electric Nieuport?

    by JLS
    Replies
    22
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    13,129

    I did a spreadsheet for the Graham Lee Electric...

    I did a spreadsheet for the Graham Lee Electric Nieuport 11, it may work for a
    Lithium Nickel Manganese Cobalt Oxide Battery at 0.22KWh/kg (that is quite
    optimistic).

    Graham Lee Nieuport XI...
  22. Replies
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    As seen in South Africa "kitplanes for africa". ...

    As seen in South Africa "kitplanes for africa".

    With a tight fit, I don't see why it wouldn't work (and examples are flying).

    8838

    I must admit my proposition has a flaw, you don't have to...
  23. Replies
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    Here are some notes and calculus. These are SVG...

    Here are some notes and calculus.
    These are SVG files, I advise you that to download them you should open them with a recent
    navigator (Chrome, Firefox, MS Edge). There is no danger of computer...
  24. Replies
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    12,936

    I'm interested in as strength as possible so...

    I'm interested in as strength as possible so 0.083" with wood doubler is my choice.
  25. Replies
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    12,936

    Thanks for sharing but this tube is for wing...

    Thanks for sharing but this tube is for wing spars, 0.083" wall is for strength, (0.035" and 0.065" wall is too thin, 0.125" is
    too heavy).2"-1/2 OD is for leading edge radius.
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