Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options not deleted user 42636

Aircraft performance covers areas such as the amount of runway required to takeoff or land and how fast an airplane can climb or descend.

4 votes

What bank angle creates the least energy loss in an emergency engine out 180 degree turn?

Asked and answered, since a any plane without a functioning engine is basicly a glider: What is the optimal bank angle to accomplish a given turn in a glide? Assuming the question refers to an engine …
Jpe61's user avatar
  • 30.5k
9 votes

Would a 50 mph aircraft holding a ground pattern in a 20 mph cross wind risk stalling by abr...

Yes. Any abrupt maneuvering near stall speed in any conditions increases the risk of stall. Add yaw (flying an uncoordinated turn), and you further increase the risk of entering a spin. As for the ef …
Jpe61's user avatar
  • 30.5k
3 votes

Is there a valid case to do the imposible turn(180)?

For the sake of simplicity let's assume that the impossible turn in this case is in fact fully impossible, so no borderline cases are considered. The actual choice in this case would be "where do I cr …
Jpe61's user avatar
  • 30.5k
2 votes

Can a plane still climb even if it has exceeded the critical AoA?

Yes, a plane can continue climbing even when it exceeds the critical AoA, as long as it has enough thrust and sufficient pitch for that thrust to have a large enough vertical component to maintain the …
Jpe61's user avatar
  • 30.5k
6 votes
Accepted

When the F16 is landing the AOA will be at 11 degrees, but speed modulates more. How is poss...

Using AoA as reference gives a simple way to maintain a safe stall margin. If approach speed was used as reference, there would have been multiple speeds to memorize, as the weight is not the same fro …
Jpe61's user avatar
  • 30.5k
0 votes

What is lifting force of V-22 Osprey? Is any other than the two rotors?

The engines do create some thrust (exhaust gasses), but it is of little significance. Most of the energy from the turbine engine is harvested to turn the propeller as explained on NASA website (for ex …
Jpe61's user avatar
  • 30.5k
9 votes
1 answer
3k views

Why is 51,000 ft a common service ceiling for business jets?

According to this article on aerospace-technology.com, many of the larger business jets seem to have a service ceiling of 51,000 feet. Other sources verify this trend. What is the reason for this, if …
Jpe61's user avatar
  • 30.5k
2 votes

Can you fly 2000 miles on an engine that costs less than $500k? If so, what type of engine?

This is perhaps not going to be a very good answer to the specific question, but the mission you describe would constitute some out-of-the-box thinking. As John K already suggested, a very light cons …
Jpe61's user avatar
  • 30.5k
0 votes

Replacing or supplementing turbofan with electric fan

Answer to the first question: yes you could, and the answer to the second would be theoretically yes, but it would make no sense. Here's why: When designing aircraft, a simplified version of choosing …
Jpe61's user avatar
  • 30.5k
4 votes

Will a heavier aircraft be more efficient at high speeds(cruise)?

Inertia is defined by Oxford languages as a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external fo …
Jpe61's user avatar
  • 30.5k
2 votes
Accepted

Comparing a Flight In Turbulent Conditions At Va And Vb

The requirements for VA and VB can be found in Code of Federal Regulations, more precicely in Title 14, Chapter I, Subchapter C, Part 25, Subpart C, Flight Maneuver and Gust Conditions § 25.335 (c) D …
Jpe61's user avatar
  • 30.5k
4 votes

What is the commercial passenger aircraft top speed record?

And this just in: In Peter Kämpf's answer he presented Atlantic crossing as one of the metrics, and the age-old Vickers VC-10 record has been beaten. The new subsonic Atlantic crossing record (this ti …
Jpe61's user avatar
  • 30.5k
3 votes

What factors influence the maximum speed of an airship?

As for the weight vs. speed: a rigid or semirigid airship has a max takeoff weight, which depends on it's size (because the size pretty much determines the max lift). If this airship was to fly, say, …
Jpe61's user avatar
  • 30.5k
5 votes

How could Airbus better tailor the A380 to the modern market?

Plain and simple, to meet current market requirements, Airbus can do pretty much nothing to make the 380 more "current". The technical improvements suggested do nothing to change the fact that the 380 …
Jpe61's user avatar
  • 30.5k
1 vote

Airplane accidents that happen during take off and landing

The problem in the accident you mentioned was not bad performance of the plane, but the effect the thick snow on the runway had on the plane. Basically a pilot error, or bad info given to the pilot. P …
Jpe61's user avatar
  • 30.5k

15 30 50 per page