Many modern passenger jets can flex their wings nearly 90 degrees in a test rig. To see how the wings and fuselage would behave under both normal and exceptional loads during their life, manufacturers perform so-called ?static tests.?
What vertical speed do pilots use on a 737? Most jets climb at 250 knots up to 10,000 feet due to FAA regulations. Above 10,000 feet, 280 to 300 knots with a transition to Mach . 7 around 24,000 feet are average for the 737.