Unanswered Questions
48 questions with no upvoted or accepted answers
4
votes
0
answers
217
views
How much do the V-22 Osprey's wings weigh?
I am trying to ascertain the weight of the V-22's entire wing assembly: right, left and center including both nacelles. But excluding the engines if possible.
- 41
4
votes
0
answers
125
views
What is the appropriate airfoil config for Raked Wingtips?
I'm doing a research about wingtip devices and while I'm searching about raked wingtip, I've wondered what is the best airfoil configuration for it?
Should it be the same as the whole wing?
My study ...
- 32.9k
4
votes
0
answers
942
views
How much does a Boeing 737 wing bend/deflect in cruise conditions?
As a part of my ongoing research of a structural joint analysis of a Boeing 737, I have been looking for sources where I may be able to find the bending/deflection data during cruise conditions. I ...
4
votes
1
answer
337
views
Why do some Caravelles have a full outboard wing fence, and some only a partial outboard fence?
The Caravelle has two wing fences on each wing, so as to limit the spanwise airflow (and associated tip-stall problems) that would otherwise occur due to its rearward-swept wings.
On most Caravelles, ...
CommunityBot
- 1
2
votes
0
answers
292
views
NASA's and Boeing truss-braced wing fuel savings breakdown
According to its Administrator Bill Nelson, NASA is working on a project with Boeing that will reduce single-isle aircraft fuel consumption by 30%. He described it as a higher and thinner wing and ...
- 425
2
votes
0
answers
343
views
Lifting-Line Theory - Numerical solution for a wing with dihedral angle
I'm trying to calculate lift for a wing with a dihedral angle using the Lifting-Line Theory. While using the thesis "Non-Planar Lifting-Line Theory for Fixed and Deformable Geometries" as a ...
- 41
2
votes
0
answers
339
views
Wing and horizontal/vertical tailplane airfoil type and relative thickness?
I've been searching for data on the airfoil type (namely if they are supercritical, aft-loading etc.) and relative thickness (average or in different positions) of the empennage (both horizontal and ...
- 702
2
votes
0
answers
115
views
Modeling of the aerodynamic characteristics of the wing
As a part of the engineering thesis I work on the methods of modeling of aerodynamic characteristics of wing. In it, I rise an issue related to the impact of changes of aircraft attitude during ...
- 60.4k
2
votes
0
answers
114
views
Why is hybrid laminar flow control preferred for swept wings over other options?
As I understand it, a (the?) major form of laminar-to-turbulent transition on the swept wings of large jets is the crossflow caused by the sweep. One way to control this is laminar flow control by ...
- 3,989
2
votes
0
answers
260
views
How much performance penalty is incurred from a WW2-era folding wing mechanism?
I'm interested in WW2-era single-engine piston-prop monoplanes. I'm interested in the folding wing mechanisms from the perspective of performance, chiefly two things:
How much extra weight does it ...
- 28.8k
1
vote
0
answers
111
views
2D vs 3D Pressure Drag
What is the difference between the parallel component of the drag that depends on alpha for a 2D airfoil and the parallel component of the drag that's on a finite wing?
I understand that for a wing ...
1
vote
0
answers
227
views
Why don’t closed wings eliminate tip vortices?
It’s clear that tip vortices never really can be prevented, but why doesn’t a closed wing do that? There is no ‘tip’ on a closed wing so where does the air go to make a vortex?
On a normal plane the ...
- 19.2k
1
vote
0
answers
107
views
Determining optimum area of parafoil, and then drag
I am designing a parafoil recovery system for a small payload of 300x100x500mm (2.4kg).
I have chosen an Aspect Ratio of 3, and from a NASA wind tunnel test report, the coefficient of lift and drag is ...
1
vote
0
answers
252
views
What is the glide ratio of the Ozone Mojo Power 2?
The ozone mojo power 2 is a paramotor wing aimed towards beginners. I am interested in purchasing it, however I have not found any data on the lift to glide ratio. Does anybody know this info?
- 137
1
vote
0
answers
217
views
How much thrust can a balloon generate with wings?
I have heard that some balloons have been made with wings, angled such that they generate some forward thrust during the ascent. Balloons can also theoretically generate thrust with wings during a ...
- 43