[FormulaLosAngeles]

Editing to accumulate comparisons of 'pissed off Francis number' : Looking at door frame decals, owners manual and fueleconomy dot gov. is best, other sources are difficult.

yesterday a pretty woman let me see the data plate on her 2016 Smart ForToo, i hope I remembered them right, so:
(capacity 472/GVWR2723)*(39hwy*7.7gal) = .1733 payload fraction*300 mile range = 52 hmm I like her better than her cars efficiency.

[score 85 city] Stock Honda Insight G1 2001ish, revised EPA stats;
(capacity 400lbs/ GVWR 2325) * (revised city epa 48mpg * tank size 10.4 gal) = payload fraction 17.2% * range 499.2 = city francis number of 85

[score 105.8 hwy]Stock Honda Insight G1 2001ish, revised EPA stats;
(capacity 400lbs/ GVWR 2325) * (revised city epa 60 mpg * tank size 10.4 gal) = payload fraction 17.2% * range 615 = highway francis number of 105.8

[score 133 hwy]above vehicle, Removing spare tire n tools 20lbs, IMA coils to batteries 130lbs, lead acid battery to a123s 20lbs modifies payload fraction to 570/2325= 21.7% with no range credit 615 = 133 francis number

[score 156.56 hypermiler] Unit 02 Natalya
GVWR - capacity= implied Curb Wieght, 2325 - 400 = 1925
Unit 02 Natalya lists curb weight of 1878, 2325 - 1878 = 447 capcity; 447/2325 = 19% payload fraction * (79.26mpg * 10.4) = 19% * 824.3 = francis number of 156.56

[score 46 ?] Tesla model 3, short range small battery pack
5710-4469 = 1241/5710 = .21 X 220 = 46

[score 91?]Lexus 2018 Lexus GS 350
4830-3726 = 1104/4830= .22 x 400 ish = 91

[score 65 ?]Toyota Mirai Hydrogen fuel cell
Payload 4 people etc 860??? / curb weight 4078.5 lbs * epa range 312mi
equals 21% for a francis number of 65

[score 141 ?]Prius stock model ? non plug in
3915-3050 = 865/3915 =.22 x 640 = 141

Prius 2007 modified to plug in modded 'Planetaire'
2921 lbs curb weight listed, oddly less than stock with more batteries, 3915 - 2921 = 1000; 1000/3915 = 25.5 % claiming 191mpg with electrical support, spec says 11.9 gal tank, (a complaint says 7?) = 25.5% * ( 191.1 * 11.9) = 25.5% of a range of 2272.9 = francis number of 579.5 , or my rusty French says his mileage includes stopping for electrical recharges which is time and availability in the desert, efficiency not a fair comparison.

MV-22 Osprey
52,600 lbs - 33,140 lb = 19460 lbs capacity/ 52600 = 36.9 % * range 879 knmi = 324

Boeing_CH-47_Chinook
50,000 lbs - 24,578 lb = 25422 lbs capacity/ 50,000 = 50.8 % * range 400 knmi = 203
in this case I don't know if these numbers are at constant altitude, but at short range and high altitude, vertical lift is a binary issue so payload fraction I hold as more important than range since you can switch to a C130
Lockheed_C-130_Hercules
155,000 lbs - 75,800 lb = 79200 lbs capacity/ 155,000 = 46.4 % * range 2,050 nmi = 953
Some multiplier for cost of vehicle plus say 3 years of average operations would improve the 'Francis Number' but there is not much sanity to war or fancy cars.



older notes:
(payload fraction X range) + burrito heat recovery cogeneration, restated:
((max allowable Gross weight-Net or tare or empty or Curb weight)/max allowable Gross weight) x range = number + (waste heat utility) call it the 'pissed off Francis formula'?
this info should be in owners manual/govt agency, but info online is poor autotk website lists both weight numbers but differing with single numbers else where :
Small RV with hot water heating from engine
???? we should be living in our cars for efficiency??