PPRuNe Forums

PPRuNe Forums (https://www.pprune.org/)
-   Tech Log (https://www.pprune.org/tech-log-15/)
-   -   Help with this Question (https://www.pprune.org/tech-log/449368-help-question.html)

yash 21st April 2011 06:48

Help with this Question
 
An aircraft takes off from an airport 2 hrs before sunset . The pilot flies a track of 90 T , W/V 130/20 , TAS 100kts . In order to return to the point of departure before sunset , furthest distance which maybe traveled is :

a. 84 nm
b. 97 nm
c. 105 nm
d. 111 nm

somehow i am not able to figure out a way to approach this quest any help will be appreciated .

Thanks

200hp_stall_freak 21st April 2011 07:30

Try the PNR formula...should work :ok:

yash 21st April 2011 08:45

Why dint i see that one coming :( :ugh:

thanks for the help :ok:

lospilotos 21st April 2011 08:48

Doesn´t matter if it is time to sunset or time to running out of fuel...

Distance to Point of No Return =
(Fuel endurance (hours) × Ground speed return (knots) × Groundspeed outbound (knots)) / (Ground speed return (knots) + Groundspeed outbound (knots))

Correct answer: 97 nm

Checkboard 21st April 2011 09:03

Given the time needed to accelerate to cruise TAS, to turn around and to decelerate and fly a circuit/an approach - the answer is probably 84nm ;)

shivang_phy 21st April 2011 10:25

it is assumed that the a/c does nor do all of those thing when questions like these are made:sad:....correct ans 97...:ok:

yash 21st April 2011 11:01

yes the correct answer in 97 kts

200hp_stall_freak 21st April 2011 11:38

No probs :) Best of luck for the exam...:ok:


All times are GMT. The time now is 10:43.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.