The sun. [volume] (New York [N.Y.]) 1833-1916, 1910-10-23
a. TOUlTIC STABILITY ~ ANN.
LINES.

" uAlf 'iAf aFTNt4aAlf uhN ufNelpne1 N
great many ways with considerable rapid -
! u l. -,ill entirely dependent On hanI CO..
( troll for it, stability. A. all events when - .
~ any wind. and a great deal 81 inger. .
I IL being expended In devices to maze .. ,
stability automatic. The question ths ...
| fore arises 20 what extent such a4tulr.. .
stability - practicable or desirable .
! term automatic stability may be- ,sf
| two sen-e~ In The first place - may s.r...
! mean such a disposition of the plane. r. ,
! the machine has a tendency to nv In a nor.
Z yontal position in still air. or. IA N" ,,,,,.f
| n may mean some device which Will .s..
the machine horiaontal in a wind ant .
] rect any dsV,auons caused hv pIr- 49,
sddes The difference between th.~s r..,
principles can we'll no seen 10 Ne tasa o.
| analogy Of boat. The fret meann- .,
the term would SIMPLY he that IL ,...l
have a general tendency Ia go s'ra.st.
unless the rudder altered the la. -r
that the steering VAS taken entirely Co.,, u
the steer-man's hands and that s'ra..s,
course Was kept by some means. such "a
Eyroscope. without the necessity Of manual
control
with regard 10 the fret point there ,s,r,
no doubt that the machine should haf. a,
great a tendency to ny in It's correct potion
~ IN consistent with Its being handle a
required In the carly French marl. ne.
the stability was entirely automatic No'r
laterally and lonRitudinallv " - We,
desired to go up. the engine had 10 10 a
faster and II Ia descend. the engine go,
run slower or stopped Lateral stat ..'r
was provided for bv vertical paril' .Drs
between the planes This system - IN >l....
factory in many ways. one Of n" NOS,
obvious heing that ~ prevents tho '..l
speed ~ the machine being used IN hoyi.
yontal hight u also prevents Tho mach n,
heinz tilted over for turning corners -htrrly.
Further. u does not appear 20 pro, a,
satisfactorily Tor the correction Of de1-..
tons due 20 d.. varying currents ~ ar
Hence purely automatic stability = rats
type ha- bren completely abandoned "a au
rrcsn' hyiuc maoh.ne-
In the early American Aeroplanes. on ma
other hand. We have the extreme uf "a
hand control A. Their" was no tail ~ aI.
the longitudinal stability depended entirely
on IN. hand control and there was NJ real
'enden,y for the machine u ~ horIXnu'auy
u IA" control lever was released Tho
result - this difference from the French
ma"hineS 0as very evident when 'He
Wright, tirs' came over 10 Europe. FOR hoy
could manPuvra la the air In WAY ma,
the French had never dreamed Of
the same time the extent 10 whi"h the s'ahI.
fiy was dependent on the hand control
appeared to be Ovsrdone. az u made he
machine more difrult to ~ than vas
necessary
The large majority Of the recent hving
chimes therefore have some kind ~
tai with a fixed surface supplemented by
a hand on'rolIsd elevator N the ftai
part - Of suitable size. there will then b4
a speed at which the machine will ~ horI.
Zontaliy. even n the lever cont rolled elevator
= released. and the natter need Therefore
only be used for altering the elevation
independent Of the speed and for correct ng
~" sur bance caused 10y puTs The lateral
stability %: all recent machines j. hand
.ontrpied. a. IN the early AMERICAN one.
II j. theoretically possible to replace
IN" hand control IN thu type Of machine
1y an automatic one controlled hy a gyrn.
scope or some similar device. This -ystem
has been much advocated IA some quart@rs
and good daal 81 ingenuity has been az
pended on 10 development II seems Ner.
touh'fIl however whether It would RI.
satisfactory even II . perfect arrangement
Pop ~ could be designed The tbeor"r,,.
ed tn'lEr would D." that the fallihiufr
u -" human factor would b" eliminated
AMI o." wa,Hln" WOULD ry a. it, proper
"'"I aut"r al. circumstances Those who
siN ",a'" automatic control POINT uu' 'ha'
re results are disastrous tf th.. pilot lu-.-
H. head or makes a mistake IN a hand
ont rolled machine H. hoNeVer. the ,u.-
f'l VA absolutely automatic. 10 - not ,.~s-
.'N 'he ma'hIn" could 10" properly handel
.'''-' ''' ''''a''''-' NV NAV UNIV I'i.f-'
."'a'" rapidly. afterward ASSUMING 4
~" l"f'/"n'aI position Tor nigh' Nza.'.
h"''d ~" engine stop. IN" ma'hln" mI-' 100
I"u-"---i - the head IN order - maAaa
NnI I'ah"' OF ~ VII stop and AL our'rH
10 ~" LOOT Ia ihi- 'a-" the mlrrIn-
'"'ll h' hno~' certain To iah In rI1T
'.Hi~ ~" i3f"b aui"mH'i" control v"It
non a''N A.~" p" -"urc" ~ danger. q,
'"Nid prevent ~" machine being huwp-et
. a. ''i I"h'" WIN The plu- What .- 'rI"
" 't" .'hS''hdinhi stability = ale" true D!
DO ia'"Fa| ~'ahI..i
'I '"Hr-" system OF automatic control
l.s'' 20" devised winch. again. Wa~ inter-
'hh". Eel win hand control. 80 that .
''-h 10" ''d'h"d 7" -uIt circumstance.
"' 100 'hIH 'a-e ~ hpp"ar- probable that trs
SAW ""ths"- "i both the hand ana auto
'''' ''h'r"l "oHId ~" retained There
"''" 10" 'N M" complication 81 An auto
''n. '"h'r'l. WIN" 'h"r" would 10" -
I""t Ha"'li' Tor 10" pilot ." tIa."
'"hs movement a. u IN" automatic lnrt
~ nov 'h"f"
'h ''h-'i"i ihE VI" question ~ auto-n1'i'
'tiNIIfN u NFu maintained bN any fUa#Itr.