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Maintenance: yasim-test

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unintialized variable correction
This commit is contained in:
Scott Giese 2021-02-20 23:04:13 -06:00
parent 4ce8be87a0
commit 98e9c45287
1 changed files with 6 additions and 0 deletions

6
src/FDM/YASim/yasim-test.cpp
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@ -168,6 +168,8 @@ void yasim_best_speed_at_height(Airplane* a, const float alt, Airplane::Configur
{ {
o_best_speed_kts = 0; o_best_speed_kts = 0;
o_best_drag = 1e9; o_best_drag = 1e9;
o_best_aoa_deg = 0.0f;
/* Could probably use a gradient-descent method, but for now we just use /* Could probably use a gradient-descent method, but for now we just use
linear list of speeds. */ linear list of speeds. */
for (float kts = 50; kts < 600; kts += 1) { for (float kts = 50; kts < 600; kts += 1) {
@ -177,6 +179,7 @@ void yasim_best_speed_at_height(Airplane* a, const float alt, Airplane::Configur
float drag = acc[0] / -9.8; float drag = acc[0] / -9.8;
float idrag = 9.8 * tan(aoa); float idrag = 9.8 * tan(aoa);
float drag_total = drag + idrag; float drag_total = drag + idrag;
if (verbose) { if (verbose) {
printf("acc=(% 10.4f % 10.2g % 10.4f)." printf("acc=(% 10.4f % 10.2g % 10.4f)."
" alt=% 10.4f kts=% 10.4f: aoa_deg=% 10.4f drag=% 10.4f" " alt=% 10.4f kts=% 10.4f: aoa_deg=% 10.4f drag=% 10.4f"
@ -185,6 +188,7 @@ void yasim_best_speed_at_height(Airplane* a, const float alt, Airplane::Configur
alt, kts, aoa_deg, drag, alt, kts, aoa_deg, drag,
idrag, drag_total); idrag, drag_total);
} }
if (drag_total < o_best_drag) { if (drag_total < o_best_drag) {
o_best_speed_kts = kts; o_best_speed_kts = kts;
o_best_drag = drag_total; o_best_drag = drag_total;
@ -201,8 +205,10 @@ void yasim_show_best_speed_at_heights(Airplane* a, Airplane::Configuration cfgID
float best_speed_kts; float best_speed_kts;
float best_drag; float best_drag;
float best_aoa_deg; float best_aoa_deg;
yasim_best_speed_at_height(a, alt_m, cfgID, false /*verbose*/, yasim_best_speed_at_height(a, alt_m, cfgID, false /*verbose*/,
best_speed_kts, best_drag, best_aoa_deg); best_speed_kts, best_drag, best_aoa_deg);
printf("altitude=% 6ift: best_speed=%gkts best_aoa=%.2fdeg drag=%g\n", printf("altitude=% 6ift: best_speed=%gkts best_aoa=%.2fdeg drag=%g\n",
alt_ft, best_speed_kts, best_aoa_deg, best_drag); alt_ft, best_speed_kts, best_aoa_deg, best_drag);
} }