![subject](/tpl/images/cats/User.png)
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.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.
Answers: 3
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.
Answers: 3
You know the right answer?
Acommercial airplane has a total mass of 150,000 lbm and a wing planform area of 1800 ft2. the plane...
Questions
![question](/tpl/images/cats/es.png)
Spanish, 04.09.2020 14:01
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mkx.png)
Arts, 04.09.2020 14:01
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 04.09.2020 14:01
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 04.09.2020 14:01
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.09.2020 14:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
Physics, 04.09.2020 14:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/es.png)
Spanish, 04.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 04.09.2020 14:01
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.09.2020 14:01
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 04.09.2020 14:01
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.09.2020 14:01