ࡱ > ! R F @|q @ W o r k b o o k 6 S u m m a r y I n f o r m a t i o n ( D o c u m e n t S u m m a r y I n f o r m a t i o n 8 @ \ p Daniel Weestello B a = = @QC8 X@ " 1 C Arial1 C Arial1 C Arial1 C Arial1 @ C Arial1 C Arial1 C Arial1 = C Arial "$"#,##0_);\("$"#,##0\)! "$"#,##0_);[Red]\("$"#,##0\)" "$"#,##0.00_);\("$"#,##0.00\)' " "$"#,##0.00_);[Red]\("$"#,##0.00\)7 * 2 _("$"* #,##0_);_("$"* \(#,##0\);_("$"* "-"_);_(@_). ) ) _(* #,##0_);_(* \(#,##0\);_(* "-"_);_(@_)? , : _("$"* #,##0.00_);_("$"* \(#,##0.00\);_("$"* "-"??_);_(@_)6 + 1 _(* #,##0.00_);_(* \(#,##0.00\);_(* "-"??_);_(@_) + ) , * H P @ / @ `"" + @ @ @ @ ` @ 1 ` , ` @ 1 ` , (@ @ @ ` * ` ( @ 8 d q: F 3f f f f ̙ ̙ 3f 3 f ff 3f 3f 3 33 3 3f 33 333 \ ` L Balloon Burst Estimator ! TABLE_1; ߮ 3 - Totex Balloon Burst Estimator Gas density Hydrogen at 0C,101 kPa Helium Chosen Gas Density Air density at 0C,101 kPa Balloon Drag (Cd) Air Density Model Launch Dia (m) Volume at Launch Area Balloon (Kg) Payload (Kg) Burst Dia (m) Burst Volume Burst Volume Ratio Burst height (m) Gross Lift Free Lift (Kg) Free Lift (N) Ascent Rate (m/sec) Ascent Rate (m/min) Time (min) Neutral Buoyancy Mass (kg) Notes: u Fill in the green cells - results in yellow cells (Pink cells are intermediate calculations, Tan cells are constants), Based on Kaymont Totex Sounding Balloon Datae Use a value of 0.3 for Drag Cd on KCI 600 to KCI 1000 - otherwise 0.25 for smaller or larger balloons} Model tends to under estimate balloon burst for small balloons by upto 3.5% - and over estimate for big balloons by upto 3.5%L Air density model based on NRLMSISE Standard Atmosphere Model - good to 80Km Pound Kilogram Ounce Feet Meter Burst-to-height ratio Desired Height Kaymont KCI 1200 Scientific Sales 300g to Conversion Calculator Burst to Height Ratio Calculator Sample Ratios * ' 9 K D@u