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C*!rta.le seatin% space

O$tstan&in% )isi.ility

Accepta.le nise le)el

Easy %r$n& han&lin%

G& )isi.ility &$rin% ta8iin%

G& han&lin% in the air

6ar%e panel t sh# 7 #ith !$ll IFR

E8cellent l# spee& cntrlla.ility

An& the list c$l& % n an& n' There *ay .e s*e )ery special thin%s y$

nee& in r&er t *a/e y$r aircra!t tr$ly $se!$l !r y$r in&i)i&$al li!e style"

s$ch as5

9:: !t' rll ta/e 7 an& lan&in% ;.eca$se y$r pri)ate strip is nly : l.s' .a%%a%e capacity ;.eca$se y$r .etter hal! li/es her creat$re

c*!rts +.$t re*e*.er" y$?ll ha)e t carry it t the *tel2=

@

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1ill it ha)e l# *aintenance csts

1ill it .e easy t *aintain

N# that y$?)e *a&e these lists" *a/e a c$ple ! cpies an& han% ne n

y$r #r/.ench" ne n y$r &es/" etc' t l/ at an& thin/ a.$t !r a !e#

#ee/s' Re!er t the* !r* ti*e t ti*e" a&&in% as *any thin%s as y$ li/e

$ntil y$ !eel y$?)e %t all the apprpriate )aria.les c)ere&'

1ith all this in!r*atin in *in&" y$ ha)e the !ra*e#r/ t start l/in% at

aircra!t' As a &esi%ner ! *any ri%inal aircra!t" I a* nt tal/in% here a.$t a

repr&$ctin aircra!t" .$t a .ran& ne# &esi%n in #hich e)ery part #ill .e

chec/e& !r a&e3$acy accr&in% t present &ay" state+!+the+art technl%y'

In ther #r&s" #e?re %in% t start !r* scratch an& nt cnsi&er a C$. #in%

n a Cita.ria !$sela%e #ith a Cher/ee tail an& a Cessna %ear' Rather #e?re

%in% t thin/ a.$t a ne# &esi%n #here a @ hp en%ine can ta/e 7 #ith

!$r peple in 9:: !t" at 9"::: !p*" cr$ise -$st .el# the spee& ! s$n& !r

h$rs" c*e in a /it that can .e .$ilt in : h$rs !r less than 9":::" #ith a

&esi%ner #h is #illin% t spen& @: ! his ti*e i*pr)in% his &esi%n t the

.$il&ers s$%%estins22

All -/es asi&e" .e!re I p$t s*ene int car&iac arrest thin/in% s$ch an

aircra!t c$l& e8ist" #e ha)e t stay realistic' O$r *achine #ill ha)e t .e

.$ilt #ith /n#n ra# *aterials" $sin% #ell pr)en techni3$es" an& the &esi%n

#ill .e s$.-ect t %ra)ity ;earth attractin= &ra% ;#aste& ener%y=" an&

p#erplant eciency -$st li/e any ther' S" ! necessity" #e *$st start $t

#ith certain .asic li*itatins" .$t #e #n?t let that &isc$ra%e $s .eca$se

there are *any pr)en" %& &esi%ns a)aila.le' 1e certainly can &esi%n ne

$rsel)es r 0n& an alrea&y e8istin% &esi%n that *eets $r nee&s'

N#" #e?ll % .ac/ t $r lists an& this ti*e #e?ll stri/e $t the $nreasna.le

ite*s' This is si*ply a *atter ! c**n sense' 1e all ha)e c**n sense +

it -$st %ets a little .it &a*a%e& s*eti*es &$rin% $r !r*al e&$catin" .$t i!

#e are t ha)e any s$ccess in li!e" #e ha)e t listen t it )ery care!$lly' I! #e&rea* the i*pssi.le #e #ill .ec*e a &rea*er $nless #e are %eni$ses' B$t

e8perience tells $s that %eni$ses are the e8ceptins" s the *a-rity ! $s has

t li)e #ith c**n sense' Reality p$ts $s .ac/ n trac/ #hen #e listen t

*$ch t $r &rea*s'

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 The ne8t step a!ter $r lists ha)e .een *a&e reasna.le .y c**n sense is

t rearran%e the*' This ti*e #e?ll c*.ine all $r )aria.les nt ne list an&

rearran%e the* in a &ecreasin% r&er ! i*prtance'

N#" $r list *ay l/ li/e this5

6# lan&in% spee&

O$tstan&in% )isi.ility

6# cst

C*!rta.le seatin% !r t#

>:: l.s' ;pilts an& passen%er an& .a%%a%e=

r this5

6# cst

Desi%n cn0&ence

Reasna.le cr$ise spee&

G& han&lin% ;air an& %r$n&=

Re*)a.le #in%s

O$r list *ay still cntain s*e inc*pati.ilities" s$ch as l# cst an& hi%h

cr$ise spee&" r se8y l/in% &esi%n an& l# *aintenance etc'" s n# is the

ti*e t eli*inate the inc*pati.ilities r chan%e each ne sli%htly t .rin%

the* clser t%ether' Usin% the pre)i$s e8a*ple" #e c$l& ha)e accepta.le

cst ;say 9:":::= an& cr$ise at : *ph r ha)e a %& l/in% airplane

#ith accepta.le *aintenance ;less than h$r t re*)e all !airin%s='

1e ha)e t .e )ery care!$l #hen interpretin% a&-ecti)es ;#hat is %& l/in%

t *e *ay .e $%ly t y$" #hat is accepta.le t hi* *ay .e $naccepta.le t

her2=' In r&er t a)i& *is$n&erstan&in%s n this s$.-ect" $r ci)ilizatin has

$ns$ccess!$lly trie& t 3$anti!y e)erythin% + an& I say $ns$ccess!$lly .eca$se

3$anti!yin% #ill stay -$st that as ln% as #e &eal #ith h$*an .ein%s an& nt

strictly #ith *achines' ;I classi!y c*p$ters as *achines" t" .y the #ay=

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1e all /n# h# the sa*e statistics can .e $se& t -$sti!y #hite r .lac/"

.l$e r re& &epen&in% n the spea/ers .elie!s an& s/ill ! cn)incin% thers'

B$t #e are nt in plitics" nt e)en at a sales r han%ar ,yin% sessin' 1e are

si*ply tryin% hnestly t &esi%n a %& ne# aircra!t' B$t #e nee& 0%$res s#e ha)e t #rite the* &#n an& as #e #r/ #ith %ra)ity ;#ei%ht=" &ra%

;p$n&s= an& ther physical 3$alities" #e a&& nt $r lists #hate)er #e can

3$anti!y" .ein% a#are that s*e ite*s ;n$*.ers= *ay ha)e t .e le!t .lan/'

O$r list *ay l/ li/e this5

Stall .el# >

isi.ility 9":::

C*!rt ;ca.in size=

J$st carry t# ;>:: l.s=

r this5

 Ttal cst .el# 9":::

Relia.ility ; =

Cr$ise spee& @: *ph

Han&lin% ; =

Re*)a.le #in% ;K+4@ !t' *a8=

N#" #e ha)e t start c*pr*isin%' It is this accepte& c*pr*ise #hich

#ill *a/e !r a s$ccess!$l ln%+ter* chice' Fr e8a*ple" ne has t

c*pr*ise .et#een 9

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ha)e three )aria.les=' Hi%h cr$ise spee& *eans lar%e #in%" hi%h li!t air!il"

l# p#erplant an& !$el #ei%ht' 6# cst *eans sin%le #in% ;n retracta.le

hi%h li!t &e)ices= a s*all #in% an& l# hrsep#er'

S" ne %es &#n the list a%ain an& a%ain c*pr*isin% an& /eepin% in

*in& that the ite*s #ere liste& in a &ecreasin% r&er ! i*prtance' A!ter

*a/in% *re a&-$st*ents t re&$ce any incn%r$ities" the ne8t thin% #e?ll

nee& t & is #r/ #ith s*e calc$latins'

1ei%ht5 Statistics sh# that the e*pty #ei%ht ! *st aircra!t is clse t

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 Y$r cr$ise spee& is s*e M: t M percent ! the tp spee&'

 Y$ #ill ha)e an i&ea ! the cli*. per!r*ance .y calc$latin% 14S 8 14 BH

1here 1 %rss #ei%ht ;l.s'=

S #in% area ;s3' !t'=

BH Rate& Bra/e Hrsep#er ! en%ine

 The statistical &ia%ra* .el# %i)es y$ )ery %& ta/e 7 an& cli*.

per!r*ance i! y$r aircra!t is .el# the c$r)e'

 These calc$latins are the .asis !r *a/in% s*e &esi%n &ecisins'

C*.inin% the res$lts ! these calc$latins #ith the )aria.les n $r list #ill

.e%in t *a/e $r &esi%n chices !airly .)i$s" th$s #e are n $r #ay t

.e%innin% the act$al &esi%n" r chsin% the &esi%n" that #e are %in% t

.$il&'

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 This statistical &ia%ra* %i)es y$ )ery %& ta/e 7 an& cli*. per!r*ancei! y$r aircra!t is .el# the c$r)e'

In $r ne8t &isc$ssin #e?ll &el)e int the s$.-ects ! #in% an& tail area"

#ei%ht an& .alance" an& sta.ility'