User alephzero

39 votes

Was a six-engine 747 ever seriously considered by Boeing?

answered Aug 28, 2019 at 19:26

27 votes

Are large jet turbofans so easy to spin?

answered Sep 29, 2020 at 18:06

23 votes

Accepted

Is there an example of a classic aviation engineering moment when engineers had to discard all their work due to the wrong approach?

answered Jun 13, 2021 at 1:58

22 votes

How did aviation industry come to know about the drastic difference in air pressure in high altitude?

answered Aug 3, 2015 at 14:13

16 votes

Why do airplanes bank sharply to the right after air-to-air refueling?

answered Mar 28, 2019 at 22:06

15 votes

Would a stationary WWII fighter fall on its nose with full throttle and brakes on?

answered Apr 7, 2017 at 11:31

14 votes

What is an afterburner and how long can a jet fly on afterburner?

answered Jul 27, 2015 at 16:19

14 votes

How complete is our understanding of lift?

answered Oct 6, 2015 at 15:07

13 votes

Is it possible to upgrade a Boeing 747-8 and Airbus A380's engines for greater speed?

answered Jun 22, 2017 at 20:27

13 votes

Does windmill restart often work for airliner engines?

answered Sep 1, 2016 at 2:30

12 votes

Why does each fan blade have a different mass and frequency?

answered Feb 26, 2020 at 19:05

10 votes

Why bother having different engine options on one aircraft?

answered May 19, 2017 at 20:57

10 votes

Why do turbofan blade tips exceed the speed of sound while prop tips should not?

answered Oct 23, 2015 at 22:26

8 votes

Can the landing gear be pulled up while the plane is on the ground?

answered Mar 20, 2016 at 21:49

7 votes

Is all jet fuel the same?

answered May 7, 2015 at 21:49

6 votes

Why do airlines seem to go out of business suddenly?

answered Feb 17, 2019 at 17:47

5 votes

Are general relationships between MTOW and OEW valid for novel configurations?

answered Aug 20, 2015 at 3:14

5 votes

What is the advantage of the blisk design in the new Trent XWB engine?

answered Jul 26, 2015 at 18:27

5 votes

Why don't B747s start takeoffs with full throttle?

answered May 31, 2019 at 14:48

4 votes

Accepted

What is the certification process for a new propeller blade design?

answered May 29, 2021 at 3:30

4 votes

What are the indications that your turbofan engine has "thrown a blade?"

answered Apr 30, 2015 at 22:02

3 votes

Why are test crashes not made harder on the airframe?

answered Jun 2, 2016 at 14:38

3 votes

Why does it take so long to develop a passenger aircraft?

answered Apr 26, 2020 at 14:30

3 votes

Do turbofan engine cowlings dilate during spool-up?

answered Jan 13, 2020 at 17:25

2 votes

Could turbine or compressor stages of a jet engine be switched off to improve fuel efficiency?

answered Jul 6, 2015 at 15:13

1 vote

Why are the fan blades mounted loosely?

answered Apr 6, 2016 at 3:04

1 vote

Why are the Boeing 747-8 engines on the wings spread apart?

answered Aug 22, 2015 at 19:01

1 vote

Flex temperature isn't actually "fooling" the FADEC, right?

answered Jun 22, 2020 at 0:24

0 votes

Why do airplanes use an axial flow jet engine instead of a more compact centrifugal jet engine?

answered May 25, 2019 at 22:02

0 votes

Why is TOGA thrust 'never' 100% N1?

answered Feb 25, 2021 at 2:58

Stack Exchange Network

31 Answers

Was a six-engine 747 ever seriously considered by Boeing?

Are large jet turbofans so easy to spin?

Is there an example of a classic aviation engineering moment when engineers had to discard all their work due to the wrong approach?

How did aviation industry come to know about the drastic difference in air pressure in high altitude?

Why do airplanes bank sharply to the right after air-to-air refueling?

Would a stationary WWII fighter fall on its nose with full throttle and brakes on?

What is an afterburner and how long can a jet fly on afterburner?

How complete is our understanding of lift?

Is it possible to upgrade a Boeing 747-8 and Airbus A380's engines for greater speed?

Does windmill restart often work for airliner engines?

Why does each fan blade have a different mass and frequency?

Why bother having different engine options on one aircraft?

Why do turbofan blade tips exceed the speed of sound while prop tips should not?

Can the landing gear be pulled up while the plane is on the ground?

Is all jet fuel the same?

Why do airlines seem to go out of business suddenly?

Are general relationships between MTOW and OEW valid for novel configurations?

What is the advantage of the blisk design in the new Trent XWB engine?

Why don't B747s start takeoffs with full throttle?

What is the certification process for a new propeller blade design?

What are the indications that your turbofan engine has "thrown a blade?"

Why are test crashes not made harder on the airframe?

Why does it take so long to develop a passenger aircraft?

Do turbofan engine cowlings dilate during spool-up?

Could turbine or compressor stages of a jet engine be switched off to improve fuel efficiency?

Why are the fan blades mounted loosely?

Why are the Boeing 747-8 engines on the wings spread apart?

Flex temperature isn't actually "fooling" the FADEC, right?

Why do airplanes use an axial flow jet engine instead of a more compact centrifugal jet engine?

Why is TOGA thrust 'never' 100% N1?