Aviation historian Phil Scott in The Shoulders of Giants: A History of Human Flight to 1919 (1995, ISBN 0201627221) wrote that he does not consider Herring a candidate for the first flight claim. Scott says Herring's glider was difficult to steer and his two-cylinder, three-horsepower compressed air engine could operate for only 30 seconds at a time.
Aviation historian Phil Scott in The Shoulders of Giants: A History of Human Flight to 1919 (1995, ISBN 0201627221) wrote that he does not consider Herring a candidate for the first flight claim.
compound
Number=Sing
Aviation
Aviation
NOUN
NN
compound
Number=Sing
historian
historian
NOUN
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nsubj
Number=Sing
Phil
Phil
PROPN
NNP
flat
Number=Sing
Scott
Scott
PROPN
NNP
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
The
DET
DT
nmod
Number=Plur
Shoulders
Shoulders
PROPN
NNPS
case
of
of
ADP
IN
nmod
Number=Plur
Giant
Giants
PROPN
NNPS
punct
:
:
PUNCT
:
det
Definite=Ind|PronType=Art
a
A
DET
DT
appos
Number=Sing
History
History
PROPN
NNP
case
of
of
ADP
IN
amod
Degree=Pos
human
Human
ADJ
NNP
nmod
Number=Sing
Flight
Flight
PROPN
NNP
case
to
to
ADP
IN
nmod
NumForm=Digit|NumType=Card
1919
1919
NUM
CD
punct
(
(
PUNCT
-LRB-
nmod:tmod
NumForm=Digit|NumType=Card
1995
1995
NUM
CD
punct
,
,
PUNCT
,
appos
Number=Sing
ISBN
ISBN
PROPN
NNP
appos
NumForm=Digit|NumType=Card
0201627221
0201627221
NUM
CD
punct
)
)
PUNCT
-RRB-
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
write
wrote
VERB
VBD
mark
that
that
SCONJ
IN
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
aux
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
do
does
AUX
VBZ
advmod
not
not
PART
RB
ccomp
VerbForm=Inf
consider
consider
VERB
VB
obj
Number=Sing
Herring
Herring
PROPN
NNP
det
Definite=Ind|PronType=Art
a
a
DET
DT
xcomp
Number=Sing
candidate
candidate
NOUN
NN
case
for
for
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos|NumType=Ord
first
first
ADJ
JJ
compound
Number=Sing
flight
flight
NOUN
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nmod
Number=Sing
claim
claim
NOUN
NN
punct
.
.
PUNCT
.
Scott says Herring's glider was difficult to steer and his two-cylinder, three-horsepower compressed air engine could operate for only 30 seconds at a time.
nsubj
Number=Sing
Scott
Scott
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin
say
says
VERB
VBZ
nmod:poss
Number=Sing
Herring
Herring
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NNP
case
's
's
PART
POS
nsubj
Number=Sing
glider
glider
NOUN
NN
cop
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
ccomp
Degree=Pos
difficult
difficult
ADJ
JJ
mark
to
to
PART
TO
xcomp
VerbForm=Inf
steer
steer
VERB
VB
cc
and
and
CCONJ
CC
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
nummod
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two
two
NUM
CD
punct
-
-
PUNCT
HYPH
compound
Number=Sing
cylinder
cylinder
NOUN
NN
punct
,
,
PUNCT
,
nummod
NumForm=Word|NumType=Card
three
three
NUM
CD
punct
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-
PUNCT
HYPH
compound
Number=Sing
horsepower
horsepower
NOUN
NN
amod
Tense=Past|VerbForm=Part
compress
compressed
VERB
VBN
compound
Number=Sing
air
air
NOUN
NN
nsubj
Number=Sing
engine
engine
NOUN
NN
aux
VerbForm=Fin
could
could
AUX
MD
conj
VerbForm=Inf
operate
operate
VERB
VB
case
for
for
ADP
IN
advmod
only
only
ADV
RB
nummod
NumForm=Digit|NumType=Card
30
30
NUM
CD
obl
Number=Plur
second
seconds
NOUN
NNS
case
at
at
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
obl
Number=Sing
time
time
NOUN
NN
punct
.
.
PUNCT
.