LAST MINUTE performance questions..
Hello all, i have a few last minute performance questions from a big school and do not understand if the answer is correct or a mistake..
IN WET CONDITIONS, WHAT EXTRA PERCENTAGE OVER THE CALCULATED LANDING DISTANCE MUST BE AVAILABLE FOR A TURBOJET.
A - 43%
B - 92%
C - 67%
D - 15%
The school say 92% but I reckon its 15% !
Just wondered as this question is shown 3 times in my feedback bundle and each time given this answer of 92%
WHEN IN A GLIDING MANOEUVRE, IN-ORDER TO ACHIEVE MAX ENDURANCE THE AIRCRAFT SHOULD BE FLOWN AT ?
A - speed for max lift
B - speed for min drag
C - speed for max lift to drag
D - speed fo rmin power
Answer given is D.. anyone explain why.. ?
ROC = 1000 ft/min
TAS 198KTS
WHAT'S THE AIRCRAFTS GRADIENT ?
A - 5.08%
B - 3%
C - 4%
D - 4.98%
I thought grad was ROC divided by TAS and this gives 5.05%
any ideas... ?
WHICH OF THE FOLLOWING WOULD GIVE GREATEST GLIDING ENDURANCE ?
A - Vmd
B - 1.32 Vmd
C - best Cl to Cd ratio
D - Close to CL MAX
Answer given is D, I thought it was C
If anyone can put my mind straight i would appreciate it
Thanks
Spitty