VAC — Missed-approach climb speed for flap configuration with critical engine inop (2.1 percent climb gradient). VAP — Approach target speed. VREF plus configuration (flaps/slats setting) and wind factor. Typically add (to VREF) half the headwind component plus all the gust factor (to a max of 20 knots).
Regarding this, what is the speed for takeoff?
A headwind will reduce the ground speed needed for takeoff, as there is a greater flow of air over the wings. Typical takeoff air speeds for jetliners are in the 130–155 knot range (150–180 mph, 240–285 km/h). Light aircraft, such as a Cessna 150, take off at around 55 knots (63 mph, 100 km/h).
What is the v1 speed for a 747?
|Aircraft||Takeoff Weight||Takeoff Speed|
|Boeing 757||240,000 lb 108,860 kg||160 mph 260 km/h 140 kts|
|Airbus A320||155,000 lb 70,305 kg||170 mph 275 km/h 150 kts|
|Airbus A340||571,000 lb 259,000 kg||180 mph 290 km/h 155 kts|
|Boeing 747||800,000 lb 362,870 kg||180 mph 290 km/h 155 kts|