ATPL: In order to provide an adequate 'buffet boundary' at the commencement of the cruise a speed of 1.3 Vs is used.At a mass of 120000 kg this is a CAS of 180 KT.If the mass of the aeroplane is increased to 135000 kg the value of 1.3 Vs will be:
Domanda 159, Mass and Balance - ATPL - Airline Transport Pilot license
| Increased to 191 KT, drag will increase and air distance per kg of fuel will decrease. |
| Increased to 202 KT but, since the same angle of attack is used, drag and range will remain the same. |
| Increased to 191 KT, drag will decrease and air distance per kg of fuel will increase. |
| Unaffected as Vs always occurs at the same angle of attack. |
