Multistage Rocket drop when burned rocket weight segment mIn junctions weight 23 number fuel weight of segments More segments(stages)=less weight to carry up=less fuel More segments=more junctions more weight to carry up Typical optimum: 2 to 4 Saturn v
Multistage Rocket drop when burned number segment junctions weight rocket weight 2 3 min fuel fuel weight of segments • More segments (stages) = less weight to carry up = less fuel • More segments = more junctions = more weight to carry up • Typical optimum: 2 to 4. Saturn V
Under-wing nacelle Placement Wing underside drag shock wave nacelle Inlet ahead of wing max depth max shock wave impinges on forward Range slope = drag weight Nacelle moved aft=landing gear moves with it= larger tail (or drag longer body to rotate for take-off more weight fore nacelle aft
more weight fore nacelle aft Under-wing Nacelle Placement shock wave drag nacelle wing underside • Inlet ahead of wing max. depth = shock wave impinges on forward slope = drag • Nacelle moved aft = landing gear l drag weight Range max moves with it = larger tail (or onger body to rotate for take-off =
National taxation max tax paid on earned revenue collected incentive to work 0% average 100% tax rate More tax/last $=less reason to strive to earn More tax/$= more S collected per unit of economic activity
National Taxation tax paid on $ earned revenue collected max incentive to work 0 % average 100 % tax rate • More tax/last $ = less reason to strive to earn • More tax/$ = more $ collected per —unit of economic activity
National taxation max tax paid on earned revenue collected incentive to work 0% average 100% tax rate More tax/last s=less reason to strive to earn More tax/$= more s collected per unit of economic activity · What to do ·| f we are left of max〓 increase taxes If we are right of max= cut taxes
National Taxation revenue collected 0 % max tax paid on $ earned incentive to work average 100 % tax rate • More tax/last $ = less reason to strive to earn • More tax/$ = more $ collected per —unit of economic activity“ • What to do: • If we are left of max = increase taxes • If we are right of max = cut taxes
Nothing to Optimize Rod P Newton A cm2 · Monotonic trend · No counter-trend N/cm2 o, allowable Nothing to optimize A
Nothing to Optimize Rod P Newton A cm2 • Monotonic trend σ • No counter-trend σ allowable N/cm2 • Nothing to optimize A