• Welcome aboard HomebuiltAirplanes.com, your destination for connecting with a thriving community of more than 10,000 active members, all passionate about home-built aviation. Dive into our comprehensive repository of knowledge, exchange technical insights, arrange get-togethers, and trade aircrafts/parts with like-minded enthusiasts. Unearth a wide-ranging collection of general and kit plane aviation subjects, enriched with engaging imagery, in-depth technical manuals, and rare archives.

    For a nominal fee of $99.99/year or $12.99/month, you can immerse yourself in this dynamic community and unparalleled treasure-trove of aviation knowledge.

    Embark on your journey now!

    Click Here to Become a Premium Member and Experience Homebuilt Airplanes to the Fullest!

Search results

Find deals on amazon
Find deals on ebay
Advertise with us
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
  1. C

    NACA reports

    aerade at Cranfield Type "NACA reports Cranfield" into google.
  2. C

    Frank Robinson gone at 93

    It was that crewman at the open door of a Wessex who waved back (!) at an excited 8 year old as he flew buy at low level, then Chuck and PT, some Army Air Corps types in their '47s Barn dancing at Biggin Hill, and some winching in SAR Wessex' at Manston as a CCF cadet that sowed the seed of a...
  3. C

    Assessment of old wood.

    I am still using spruce I bought from S&S in the early 90s and have wood from Wicks bought in the early 2000s. Moisture content will depend on ambient conditions, same as for fresh wood. Without trying to be facetious, the majestic giants harvested yesteryear might already have been 500+ years...
  4. C

    UK Foam suppliers

    https://www.insulationshop.co/polystyrene_insulation_eps_70_online/xps_extruded_polystyrene_insulation.html
  5. C

    A/C nail supplier

    I have used nails and a stationery stapler, I preferred staples as I could take them out and they were quicker and cheaper to use. Both are used to provide clamping pressure for the glue; some people use weights. Univair in the US or Light Aero Spares in the UK still sell nails.
  6. C

    Cub rear seat attachment

    some random internet pics
  7. C

    Cub rear seat attachment

    Hi PT, sorry no pictures or detail as I can't get to my machine or my copies of Cub Clues (due to the Enmerdeur en Chef Macr*n and the Enculeur en Chef J*hnson) Take a look at the Univair seat back on their web shop. It has 2 sleeves at the top for 2 strips of aluminium. The topmost sleeve and...
  8. C

    Corby Starlet Plans Wanted

    Understood, with apologies. Suitably chastened, Cub
  9. C

    Perimeter of airfoil

    Not stupid at all. https://www.homebuiltairplanes.com/forums/attachments/app-d-geometry_of_lifting_surfaces-pdf.47422/ Bonne chance
  10. C

    Did you load test your airplane?

    I think the assumption with limits is that the pilot will remain within the envelope, which is to say the 50% fos is not to be seen as an extra margin for dipping into- hence the German method ( whether one could inspect the structure post test to your satisfaction is another matter) where if it...
  11. C

    Did you load test your airplane?

    Well done for getting to the point where you have something to test - I've only managed bits so far! Anyway, the limit load is as I currently understand it, just that- the limit, meaning anything up to that is fair game and explicitly allowed; there should be no damage and the structure should...
  12. C

    Tips and tricks for building a LIGHT aircraft

    Hi scrap, The spruce you select must still be at least the minimum specific gravity in order to achieve the strengths shown in, for example, the ANC-18 tables; this will work out to 27lbs/cubic foot at 15% moisture - wood density matters. An AN364-4 nut weighs about 0.0056 lbs and a 960L-4...
  13. C

    Wing weight estimation - some help with data please?

    Hi F92 From GA Aircraft Design by Gudmundsson formula to estimate area of aerofoil section: Area=((k+3)C*t)/6 C=chord ft or m k=location of aerofoil max thickness as fraction of chord t= aerofoil thickness (same units as C) Bonne chance. Cub
  14. C

    Limit and Ultimate loads - How do you apply the Factor of Safety?

    Thanks B-man for the link, I have seen that thread before, very useful; Yes, agree about FoS being a subject all to its own - sometimes the simplest things.... I am resigned to adhering to the last 112 odd years of best practice and doing the multiplication;) Thanks Auto - interesting point...
  15. C

    Limit and Ultimate loads - How do you apply the Factor of Safety?

    Thanks Dana, you have summed up my nominal understanding about the mechanics of the FoS but just to illustrate: on one lower panel I have calculated at VD +4g a max Normal lift of 423lbs combined with a Chordwise antidrag component of 20lbs- my prelim structural ideas can cope with these x 1.5...
  16. C

    Limit and Ultimate loads - How do you apply the Factor of Safety?

    Thanks for the reply and advice B-man. I am going to build in wood. My question was not really what the FoS ought to be as I am happy that 1.5 is sufficient, but about how the FoS is applied, and having having thought I understood the simplicity of merely multiplying the limit load by 1.5 to...
  17. C

    Limit and Ultimate loads - How do you apply the Factor of Safety?

    Hi, My design is to be a small single seat biplane of 510lbs gross weight and 108 sq feet wing area, with +4g and -2g as the Limit load factors, with speeds Vs 38mph, Va 76mph. Vc 85mph, Vd 120mph I realise these speeds are quite high for this gross weight, but I am just following Mr Stout's...
  18. C

    Richard Hiscocks book, Flight load calcs in chapter 5

    Hi Folks, Best regards to All - it's time for my biennial question:ermm: Same book but different chapter. In Chapter 5, on page 76, there is table 5.5; in the last two columns for E and G points on the envelope Mr Hiscocks has given for H. tail load, P,lb. n=1 the values -137 and -22 which I...
  19. C

    Richard Hiscocks Book: chordwise lift distribution calculations

    Ahh, of course! It all fits now. Well I did say it was staring me in the face. Thanks for the insight and super speedy reply Autodidact-goodness gracious, you get up early in Oklahoma!! Cub
  20. C

    Richard Hiscocks Book: chordwise lift distribution calculations

    A fellow can stay silent and be thought a fool, or speak up and have it confirmed:ermm:, so here I am busy working through the calculations for determining chordwise lift load distributions. My maths is not great, but I am keen to fully understand the methods of analysis in qualitative terms and...
Back
Top