model name date type thrust (kg) / power (eshp) fitted to
model name
date
type
thrust -lrb- kg -rrb- \\/ power -lrb- eshp -rrb-
fitted to
number parsed year
first second first_number
list length
text date text unitnum(text) <c, text>
rtd-1/vdr-2 1938 two-stage centrifugal compressor turbojet 4,600 kg (at qualification in 1950) test-bed only
what is the difference in thrust between the al-7 and al-21 ?
WP VBD-AUX DT NN IN NN IN DT NN CC NN .
4,500 kg
select abs ( ( select c4_first_number from w where c1 = 'al-7' ) - ( select c4_first_number from w where c1 = 'al-21' ) )