All Questions

3
votes
1answer
222 views

Airbus Beluga, what is aft of the cockpit?

In the Airbus Beluga (and Beluga XL), the main cargo deck runs the full length of the aircraft, starting just above the cockpit. Is there more usable space behind the cockpit? Or are there fuel tanks ...
0
votes
0answers
14 views

Is it possible to evaluate all critical load cases in FEA when the masses may change depending on the load case and/or flight condition?

I want to run a linear static finite element analysis on a global airplane model and capture the critical loading conditions. Meaning, the payload and fuel masses may change position and magnitude ...
0
votes
0answers
19 views

Aerodynamic Pressure Loads in FEA of Lifting Surfaces - Query

Let me give a brief summary of the process involved in the FEA of lifting surfaces with the wing as an example: 1. The wing is modelled as a hollow surface body in Ansys, meaning only the exterior ...
3
votes
1answer
304 views

Why did this pilot have his single-engine license revoked?

5 minutes into this video, a commercial Indonesian pilot is shown performing a very tame version of a parabolic flight path as performed by zero-gravity flights, in a Cessna 172. This video has over ...
3
votes
2answers
121 views

What are the scale effects of GA wing tip airfoils?

[ update: I am adopting an improved description provided by Peter Kämpf: "...only looking at the airfoils in isolation..." ] The goal of this question is to determine if wing tip airfoil scale plays ...
2
votes
2answers
158 views

Are there planes that can fly without wings? How would a plane be able to fly without wings? [duplicate]

Are there any planes that can fly without wings? How do they produce lift? How do they control the attitude?
3
votes
2answers
130 views

Why does only one hydraulic intake line from the reservoir have a filter on the Arrow II?

This is a portion of an Arrow II landing gear hydraulic system diagram. I noticed that there are two intake check valves, one located on each side of the pump, that would allow flow from the ...
2
votes
0answers
34 views

What is the difference between a pressure switch, high-pressure control, and low-pressure control in a landing gear hydraulic system?

This is an Arrow II landing gear diagram. In the diagram, the high and low pressure controls look like check valves. The pressure switch is unclear. What are these three items, and what purpose ...
0
votes
1answer
275 views

What is the largest and heaviest payload ever flown?

Not counting the plane what is the largest or heaviest payload ever flown?
7
votes
2answers
221 views

Why would banking be a problem for passengers on the Flying-V aircraft?

In this article, the author raises doubts about the viability of this aircraft: Sadly for the Flying-V, it will probably fail like the blended wing body designs we've seen down the years. It's ...
4
votes
1answer
354 views

What's this biplane built by a 16-year old?

I was told that this plane was built by a 16-year old in the 90s. Ever since, I've been bent on finding the specifications, name, etc., of this airplane with no success.
2
votes
2answers
178 views

What does an “X” at only one end of the runway mean?

I came across aerial imagery of a dirt strip in northern Idaho with a white "X" at one end of the runway, but no markings at the other. Does this mean the runway is only closed in one direction, or ...
6
votes
1answer
85 views

How universal are air traffic control systems, training and practices?

A commercial pilot, especially in the airline industry, is in a role that is essentially the same as that of a pilot who is employed and was trained in just about any other part of the world. Does ...
7
votes
3answers
1k views

Why is the tail group of virtually every airplane swept instead of straight?

Even low performance airplanes like ultralights have their tail group (vertical and horizontal stabilizer with rudder and elevator) swept backwards knowing fully well that a straight tail group will ...
1
vote
2answers
174 views

What is the purpose of the shuttle valve in a Piper Arrow's landing gear system?

This is the PA-28R-201 landing gear hydraulic system diagram. I am wondering how this shuttle valve functions. Research I have done indicates that a shuttle valve blocks one attachment to the valve ...
4
votes
4answers
185 views

On a constant speed propeller, how is blade pitch related to airspeed and efficiency?

I'm trying to wrap my head around what the PHAK (Pilot's Handbook of Aeronautical Knowledge from the FAA) states for constant speed propellers. First, why is it that if airspeed increases, for a ...
1
vote
1answer
180 views

Could this helicopter's body be a flying wing?

This question: Could a helicopter fly like a plane? asks if a helicopter can turn sideways using additional wings to tip forward to allow the rotor blades to act as a propeller. The tail-setter and ...
5
votes
1answer
104 views

Do leading edge flaps increase the critical angle of attack?

So from my understanding, trailing edge (TE) flaps increase wing area + camber, effectively increasing the coefficient of lift for a fixed AOA which leads to higher lift at a fixed airspeed and AOA. ...
28
votes
2answers
4k views

Why is one of Madera Municipal's runways labelled with only “R” on both sides?

I was looking on Google Maps satellite view and noticed Madera Municipal Airport in Madera, CA (ICAO KMAE) has an east-west runway labelled with nothing but the letter "R" on both sides. There is no ...
3
votes
2answers
282 views

Is it true the F-16 has never lost a dogfight?

(Source) I have heard the F-16 has never lost an air-to-air dogfight - is this true?
8
votes
1answer
709 views

How is a Flying-V more efficient than current fuselage-over-wing designs?

It's claimed the plane will use 20% less fuel than the Airbus A350-900 while carrying a similar number of passengers -- the Flying-V will seat 314, while the Airbus A350 seats between 300 and 350. The ...
1
vote
2answers
187 views

How much does it cost to lease a jetliner?

As the title says, how much would it cost to lease a airplane for an airline. Let's say a B737 and a B747 or similar aircraft. I tried to contact several aircraft leasing companies but so far I've ...
2
votes
1answer
173 views

How does F/A-18 autotrack work?

This is about the alleged "UFO" video. However, I'm not interested in speculation about what exactly the aircraft being tracked in the video is. What is "autotrack" in an F/A-18 Super Hornet? Does it ...
-3
votes
3answers
94 views

Is this safety ranking of different aviation methods accurate? [closed]

I'm compiling a list of essentially "Different ways a human can fly" and then ranking them in order of safest to most dangerous. This is my final list, is it statistically (and practically) accurate? ...
0
votes
1answer
62 views

What the weather condition can affect for flight? [closed]

What is the most disturbing weather conditions for flight? On another word: what more dangerous for takeoff/landing: wind, precipitation or something else?
13
votes
3answers
3k views

What's the name of this light airplane?

The propeller of this light airplane almost looks like a triangle, so I'm interested in knowing its performance but I need help in identifying this plane because I don't even know her name.
0
votes
1answer
62 views

What was the decrease in approach speed of the KFIR over the Mirage 5 due to the canards?

The Mirage III approached at 170 knots according to the Dassault. The Mirage NG and the KFIR C2 as well as the Swiss Mirage 5s added canards to the design, what was the decrease in approach speed due ...
0
votes
1answer
93 views

Can I fly a paramotor after learning on a paraglider?

This video has inspired me to spend next week doing a 6 day paragliding course. The only downside is the school near me don't teach paramotoring. Could I buy (and safely use/self-teach) a paramotor ...
6
votes
1answer
584 views

Does the mixture and throttle setting affect the quality of priming of fuel prior to start?

This question is a generality. For airplanes with small reciprocating engines, does the mixture and throttle setting at the time of priming affect the quality of the priming or the engine start, or ...
5
votes
2answers
218 views

Angle of attack difference between outer wing and inner wing during a descending turn and climbing turn

I understand that during an ascending or descending turn the angles of attack of the inner wing and outer wing are different. However, I don't understand why then ascending and turning, the outer ...
0
votes
0answers
19 views

How much of an instrument approach must be in instrument conditions in order to qualify for currency as actual instrument? [duplicate]

I've always wondered if there is any guidance on logging of instrument approaches in actual conditions when the conditions are only actual for some portion of the approach. Hypothetical example: A ...
5
votes
2answers
238 views

How can I get flying again after FAA medical rejection for anxiety two years ago?

Post Military Service I was diagnosed with Generalized Anxiety Disorder and put on Zoloft (Sertraline). I had taken it for a while but had not refilled my prescription, and was off the meds with the ...
1
vote
1answer
54 views

May an instrument instructor log instrument approaches that a student flies in simulated conditions as approaches for currency purposes?

I was told by a fellow CFII today who says he was told this by a former DPE that a CFII who is providing training to a student can log that student's simulated instrument approaches as the instructor'...
3
votes
2answers
1k views

Do you need type ratings for private flying?

This question popped into my head when I learned some Citation X series have shared (?) type ratings. So a theoretical situation: I am a happy person with PPL and IFR ratings and then I decide to ...
-1
votes
2answers
154 views

Can an airliner be landed with only the auto pilot or remotely?

In this question: How autonomous are commercial passenger airliners? explains how automated the auto-pilot system can be. Could a pilot or more work the controls of the auto pilot that does not have ...
28
votes
3answers
7k views

How would an aircraft visually signal “in distress”?

A ship at sea would fly its flag upside down to signal it's in distress. How does a plane or airliner that has no radio or transponder visually signal that it is in distress? This question: How do ...
-2
votes
2answers
127 views

Would a long pole help stablize a jet pack?

Jet packs are classically worn like a book-bag on the back. Would it be more stable if the exhaust ports were separated? Would the jet pack be easier to control if the turbines were at the ends of a ...
4
votes
2answers
270 views

Are go-arounds prohibited at St Barth (TFFJ)?

The description of this video claims that past a certain point — which is around the turn to final — on approach to TFFJ (St. Barth) runway 28, a go-around is prohibited. That sounds strange. I ...
2
votes
1answer
348 views

When an airliner gets lost, and receives warning shots from interceptors, how should the pilots react in order to save the aircraft?

In 1983 KAL007 was shot down by the Soviets, as it got lost due to navigational errors and entered restricted airspace. The Soviet interceptors reportedly fired warning shots "which were likely not ...
1
vote
2answers
64 views

What are the aerodynamic implications of different conditions with the same Mach number?

At a particular Mach number, a fluid behaves similarly, but many other conditions could be different. For example, an aircraft flying at Mach .85 at a low altitude will be in denser, warmer air, and ...
2
votes
1answer
95 views

What do professional pilots keep track of in their pilot log books?

Professional pilot logbooks (either paper or electronic) always seem to be more elaborate than those used by private pilots. I am curious as to what a professional pilot finds important to track in ...
1
vote
1answer
74 views

Boundary layer momentum thickness

Could someone please explain the concept of the boundary layer momentum thickness and its difference to boundary layer thickness calculation? Some explanation about the application of the boundary ...
5
votes
1answer
93 views

How can I overlay a VFR sectional on another map to identify features and landmarks?

How do I know which highways and landmarks on a VFR sectional align with which real-world features? Is there a way to overlay the VFR sectional map from the FAA on top of Google Maps or Bing? Edit: I'...
7
votes
4answers
487 views

During VTOL landings, do Harrier pilots cut power before touching the ground?

When vertically landing, do Harrier pilots cut power before they touch the ground?
3
votes
1answer
116 views

What short-term alternatives do airlines have to replace their grounded Boeing MAX 8s?

The MAX 8 fleet is grounded: what are the other practical aircraft platform options available to AA, SWA or Continental that ensures that ticketed summer 2019 passengers arrive at their destinations ...
1
vote
1answer
116 views

What is the lightest jetliner out there?

What is the lightest commercial jetliner out there? I was thinking of something like a Embraer E170.
3
votes
1answer
72 views

How is maximum rate of climb defined in aircraft specifications?

In common aircraft specifications a "rate of climb", or "maximum rate of climb" is specified. For example the wikipedia page for a Spitfire, or C172. However my intuition is that the rate of climb ...
9
votes
5answers
3k views

How hard would it be to convert a glider into an powered electric aircraft?

How hard would it be to convert a glider into an powered electric aircraft? I'm thinking something that looks like this: Would it be as simple as mounting two electric motors and props to the wings ...
0
votes
1answer
99 views

What will be the performance penalties of increasing the wing area of a delta winged aircraft to obtain a lower approach speed?

Delta winged aircraft such as the Dassault Mirage III have an approach speed of 170 knots as specified by the manufacturer. The Mirage F1 was designed to have a lower take off and landing speed than ...
2
votes
1answer
79 views

What causes 'wing rock' and how does it work?

Currently studying for a course on fighter aircraft. I came across the phenomenon of 'wing rock', which occurs at very high angles of attack, but I couldn't find any good sources that explain how this ...

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