Engineering, 14.12.2019 03:31 gabrielmartinsotr4yl
Acommercial airplane has a total mass of 150,000 lbm and a wing planform area of 1800 ft2. the plane has a cruising speed of 550 mi/h and a cruising altitude of 38,000 ft where the air density is 0.0208 lbm/ft3. the plane has double-slotted flaps for use during takeoff and landing, but it cruises with all flaps retracted. assuming the lift and drag characteristics of the wings can be approximated by nac a 23012, determine
(a) the minimum safe speed for takeoff and landing with and without extending the flaps,
(b) the angle of attack to cruise steadily at the cruising altitude
(c) the power that needs to be supplied to provide enough thrust to overcome drag. take the air density on the ground to be 0.075 lbm/ft3.
Answers: 1
Engineering, 04.07.2019 18:10
Ifa component is made of two or more materials with different modulus of elasticity (e), it is called a composite member and we calculate the factor·n". mention the formula for calculating n". also, ifn> 1, explain what will happen to the 1. transformed.gi) ifn 1, what will happen to the material when transformed material when
Answers: 1
Engineering, 04.07.2019 18:20
Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k
Answers: 2
Engineering, 04.07.2019 18:20
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
Answers: 1
Engineering, 04.07.2019 19:10
What is a monomer? how do they form a ploymer from the view point of chemical bonding?
Answers: 1
Acommercial airplane has a total mass of 150,000 lbm and a wing planform area of 1800 ft2. the plane...
Mathematics, 25.07.2019 18:20
Mathematics, 25.07.2019 18:20
Business, 25.07.2019 18:20
Mathematics, 25.07.2019 18:20
English, 25.07.2019 18:20
Social Studies, 25.07.2019 18:20
Chemistry, 25.07.2019 18:20
History, 25.07.2019 18:30
Mathematics, 25.07.2019 18:30
Physics, 25.07.2019 18:30
Mathematics, 25.07.2019 18:30