I cannot find a generic takeoff chart for the 850 lbs BD-5B Micro-plane. How can I find, generate, or calculate the takeoff and landing distances needed? I did find this chart below and included the specifications. Please provide an example I can follow and learn from.
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Justintimeforfun
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1That is definitely not an ultralight! – quiet flyer Jan 13 '23 at 00:17
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@quietflyer what would you call it? – Justintimeforfun Jan 13 '23 at 02:10
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1I'd call it fun! – GdD Jan 13 '23 at 13:19
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@Justintimeforfun At least in the US, an ultralight must be less than 254 lbs. and carry 5 gallons or less of fuel. Since this plane has a gross weight of 850 lbs. and carries 26 gal. of fuel, it can't be an ultralight. – HiddenWindshield Jan 13 '23 at 18:38
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You need the values of at least thrust, weight wing surface, density and maximum $C_l$, obviously all at takeoff. I think everything is know except max $C_l$ (?) – sophit Jan 13 '23 at 19:22
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@sophit Does this help? – Justintimeforfun Jan 13 '23 at 20:31
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Yes perfect. Now you can put everything in the last diagram (the one with the "takeoff parameter" - use the second equation for propeller aircraft) of this answer and you should get a good approximation. Obviously you have to use takeoff values, with $C_{l_{TO}}$ being $1.21 \times C_{l_{max}}$. $\sigma$ is the density ratio in respect to ISA sea level. – sophit Jan 13 '23 at 22:50
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Are you planning to bet your life on an answer from ASE ; ) – quiet flyer Jan 14 '23 at 02:05