Report Abuse. To get airborne, a Boeing 737 needs to reach a speed of 140 knots (its rotate speed or Vr). For landings, I usually maintain 150knots (MS-FlightSimulator). These speeds really depend on an airplane's design, weight, wing shape and size, wind/weather factors, etc.Fulani Filot Â· 9 years ago.o get airborne, a Boeing 737 needs to reach a speed of 140 knots (its rotate speed or Vr). For landings, I usually maintain 150knots (MS-FlightSimulator).
The Muscles Worked During Calf Raises. Calf raises target the muscles on the back of your lower legs. Photo Credit fatchoi/iStock/Getty Images. The calf raise exercise targets the muscles on the back of your lower legs that facilitate plantar flexion, or ankle extension. These muscles contract to lift your heels off the floor during the upward-movement phase of the exercise, and to control the speed of movement during the downward movement phase.
Let's Make Those Calves Grow! If you want the calves to get big, you are going to have to make them a priority for a while. This means you will need to train them first in your workout and hit them twice a week.I will let you choose which day you want to train them.o better understand how you can make them grow, let's get into what these muscles are and how they work. The soleus specifically plays an important role in standing; if not for its constant pull, the body would fall forward. It runs from just below your knee down to your heel.