What amount time (sum) 40° that the thing take a 16 lb shell reach maximum no more than 22,000 ft?
m/v ft/s Shell (lb) Time to ft (m) at 25° (seconds) Time to ft (m) at 40° (seconds) Time to ft (m) at 55° (seconds) Max. height (ft)
QF 3-inch 20 cwt
13963241
real real text real real real
2-13963241-1
Performance
Performance
1990 12.5 10.1 15.5 22.1 19,000
2200 12.5 9.1 14.1 19.1 20,000
2500 12.5 8.3 12.6 16.3 23,500
2000 16 9.2 13.7 18.8 22,000
2350 31 4.4?? 9.6 12.3 28,750
SELECT COUNT Time to ft (m) at 40° (seconds) FROM table WHERE Shell (lb) = 16 AND Max. height (ft) < 22,000
16 22,000