Commercial versions were called the holden one tonner vy holden ute vy and holden crewman vy. The holden commodore vy is an executive car that was produced by the australian manufacturer holden from 2002 to 2004.
Vy best rate of climb speed vx best angle climb speed you may be looking at those definitions and thinking yea that s great but what is the effect of best rate vs.
Vx vs vy. It was the third iteration of the third generation of this australian made model its range included the luxury variants holden berlina vy and holden calais vy. Know how to use the best climb speed in different circumstances. This makes sense as vx will have a slower forward speed.
Thrust horsepower thrust x velocity. To figure out where vy is you need to draw a power required curve. Where vy is defined as the greatest difference between thrust horsepower required and thrust horsepower available and vx is greatest difference between power required and power available.
Rogers at my request has kindly plotted the times to reach 1 000 feet above a sea level airport on a standard day using vx blue vy red and a composite purple of vx and vy where he uses vx to about 300 or 400 feet and then transitions to vy. So you can compute power required by multiplying your total drag force required by your airspeed distance over. Vx is slower than vy.
Vx is all about excess force thrust but vy is all about excess power horsepower. An easy way to remember vx vs. The letter x has more angles than the letter y.
The slower forward speed of the airplane will provide more opportunity for altitude gain before reaching the obstacle to be cleared. Let s imagine for a moment the following hypothetical situation. Power is work done per unit of time.
That s the definition of vx and vy. Where v is equal to tas. Vy is to ask yourself which letter has more angles.
Vy it s all about power.
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