Questions tagged [aircraft-design]

Questions about the different choices that aircraft designers (typically aerospace engineers) make in order to create an aircraft.

Filter by
Sorted by
Tagged with
2
votes
2answers
186 views

Why are there no high wing Canard airplanes?

Just had a thought about canard airplanes while looking at the Tu-144 that features a canard surface on the top of its fuselage. Are there any high-wing aircraft with a top or bottom mounted canard? ...
0
votes
1answer
119 views

What is the "mass growth factor" of an aircraft?

How to understand the aircraft mass growth factor? Which physical meaning does it hide? Which are the practical applications?
0
votes
0answers
46 views

Why are C17's horizontal stabilizer mounted so high? [duplicate]

The C17 has its horizontal stabilizer mounted at the top of the vertical stabilizer, way above the plane of the wing but most aircraft, including other large aircraft made by the same manufacturer (...
3
votes
1answer
121 views

Are Airbus A320 Cabin Door Exterior & Interior Levers Linked?

Was looking at this video on Airbus A320 Cabin door procedures and was wondering if the exterior door lever is mechanically linked to the interior lever? It seems as if the exterior lever will open ...
0
votes
0answers
52 views

Suggestion to make a paper [closed]

I'm trying to make a paper for the master's degree, and my synodal are requesting me to propose an electronics applied to aviation/aeronautics to work on it. I have the idea of review if the 5g ...
0
votes
3answers
91 views

Calculate Rudder Angle by Bank Angle [closed]

My question: Is rudder angle equal to bank angle? Or, does rudder angle has some relationship with ROT formula? Below is my steps trying to solve this question. Step 1: Found below graph from this ...
0
votes
1answer
60 views

What is the windshield Heating Element (Thin Cable) for Aircraft or Rotorcraft?

My question is related with the heated windshield employing the some type of heating elements. Very very thin metalic cables are in use between two glasses of windshield. I have searched but noting ...
5
votes
1answer
1k views

Why not use the alternate static port at all times?

One of my club's small planes apparently has an intermittent problem with moisture in the static port line, so the recommendation is to always fly with the alternate static port open. That leads me to ...
0
votes
3answers
135 views

Calculate speed by turn angle and distance [closed]

I'm trying to combine two rate of turn formulas, which I found it online this and this. The first is ROT = 1091 * tan(bank angle) / speed in knots The second is <...
0
votes
1answer
163 views

What are the basic principles of making fighter jets manoeuvrable [closed]

Disregardimg thrust vectoring and other computer-aided functions, what are all the basic factors of making a fighter jet manoeuvrable? Using basic physics design principles such as high thrust to ...
4
votes
1answer
173 views

Can a jet-engine aircraft fly all the way to its service ceiling at its maximum takeoff weight? [closed]

I am trying to understand how high an aircraft can get to at its maximum takeoff weight (minus whatever fuel is consumed in getting to that altitude). Can it make it all the way to its service ceiling?...
7
votes
3answers
244 views

Why do smaller RC helicopters have visible twist in their rotors, and slightly bigger ones do not?

Smaller, cheap, RC helicopters generally have very pronounced twist in their blades, and also vary their chord - slightly larger, slightly more expensive RC helicopters have no visible twist or chord ...
2
votes
1answer
105 views

Are horizontal engine pylons generally shaped to provide lift (in either direction)?

Most civil multiengine jets and some civil multiengine propeller aircraft have engines mounted in nacelles on the ends of pylons extending some distance away from the wing or fuselage. Wing-mounted ...
-4
votes
1answer
155 views

Would blade-less (Dyson style) jet engines work? [duplicate]

Is it possible to design an aircraft with blade-less (same concept as Dyson) design to generate thrust? What are some of the key benefits, drawbacks and examples of attempts (if any) at this kind of ...
10
votes
2answers
1k views

How exactly do the Beechcraft 1900's stabilons work?

The Beechcraft 1900, in addition to the usual wings and vertical and horizontal stabilizers, and the extra vertical tail surfaces added for improved directional stability, has a pair of horizontal ...
2
votes
0answers
128 views

Why do white marks on the spinners in front of engines have different patterns? Not Yellow? Omitted for some models?

In aeroailas' answer I understand that the cones in front of the props/fans are called spinners. In Farhan's answer I understand that the ehite marks painted onto the spinners act less as scarecrows ...
-2
votes
0answers
33 views

Mass flow rate for jet engine combustion [duplicate]

Want to know about the mass flow rate in typical turbofan engine combustion chamber
4
votes
1answer
225 views

What CAD software is most commonly used for aircraft design?

What is most commonly used CAD software for aircraft design? AutoCAD, CATIA..?
7
votes
2answers
254 views

What is the difference between the series and parallel yaw-damper systems for the 707?

Some excerpts from the Pan Am 707 AOM indicate that the 707 can have one of two different yaw-damper systems, "series" and "parallel", with differing capabilities: YAW DAMPER The ...
7
votes
4answers
2k views

Is a VW Beetle engine a good choice for a light two-seat aircraft build? [duplicate]

What do you think of an air cooled Volkswagen engine for building a light two-seat airplane? This is probably the only engine I can get my hands on that needs no reduction gear and has enough HP. ...
0
votes
1answer
156 views

Can a fixed pitch propeller be designed to act as both a propeller and a generator?

The angle of attack (AoA) plays a major role in designing a propeller for specific uses, such as if it is to be designed for aircraft propulsion the AoA must be high, while the AoA must be low if it ...
0
votes
1answer
94 views

Would this concept of Autogyro/Gyroplane be efficient or practical?

First, i'm quite ignorant on aerospace engineering, so I hope I don't make too many incorrect assumptions. If you don't know what an Autogyro/Gyroplane is, here is the Wikipedia article of it. The ...
3
votes
2answers
257 views

Why is aircraft design so simple compare to other aero-applications?

All design in aviation is relatively simple and clean, without some fancy stuff, compare to others aero-applications. What is reason for this, because every aero application has same goal, get lift ...
0
votes
1answer
241 views

What are the advantages and disadvantages of fluidic thrust vectoring on aircraft?

The Rockwell XFV-12 was a research project for combining supersonic speed with Vertical Take-Off and Landing, From wikipedia: The XFV-12 used a thrust augmented wing concept... in which exhaust would ...
0
votes
0answers
69 views

How expensive is the structural materials on a stealth aircraft compared to its other components?

Well, I couldn't find much information about the prices on the materials used on stealth aircraft, but nevertheless, its huge price tags are often quite obvious. The B-2 bomber, for example, costs 2 ...
2
votes
3answers
153 views

How the AOA, Pitch and FPA are changing during a flight maneuver

For a steady state flight, there is a equation that FPA + AOA = Pitch, but how these three variables are correlated during a flight maneuver like currently I am in a leveling flight and then I want to ...
-2
votes
1answer
83 views

Can a Magnus/Coanda effect be used on wings with hot gases for more efficiency? What are current aircrafts that uses such system?

Well, I don't know much about this type of mechanism, and the only post I could find that has something similar to what I'm asking is this one, but isn't quite what I'm asking. So, the idea would be ...
-5
votes
2answers
168 views

Why large freighter planes still do not use intermodal (ship) containers given that size and shape are not problems?

Recently I found this article this article about the concept of directly sit on a pile of intermodal containers and lock them in place. Whether it is plausible to open such a huge opening ventral of ...
-1
votes
1answer
125 views

What are the feasibility of making a spherical aircraft using Magnus/Coanda Effect? [closed]

Well, I'm quite ignorant in aerodynamics in general, but I couldn't find any aircraft that fits this description. And yes, I know that wouldn't be as efficient as a conventional aircraft, but I'm ...
-3
votes
1answer
121 views

Why the European Eurofighter Typhoon did not have pitot tube in front of the radome? [closed]

The layout of the aircraft does not have the proper pitot tube. I believe that the aircraft needs clean airflow for its instruments .
4
votes
2answers
203 views

What are specified rudder pedal forces?

Zeus have previously provided us with links to aviation certifications standards (e.g. FAR 23.155, FAR 23.397). I think Far 23.155 specifies the forces to provide maximum elevator control signal. But ...
5
votes
3answers
318 views

Why have high lift devices on both leading and trailing edge?

Trailing edge devices such as flaps increase lift by raising lift coefficient at s given AoA. Leading edge devices such as slats increase lift by raising stall AoA. The former is nice because it ...
5
votes
1answer
291 views

Why did Concorde have a large anhedral?

Why does Concorde and many other deltas have their wings bent down?
9
votes
8answers
3k views

How would you design an airplane to counteract a single engine’s left turning tendencies?

How would you design an airplane to counteract a single engine’s left turning tendencies caused by torque, p-factor, spiraling slipstream and gyroscopic precession without pilot input or use of rudder?...
11
votes
1answer
412 views

What inspired the unique design of the F-105 Thunderchief intakes?

The horizontally forward-swept intakes of the Republic F-105 Thunderchief is not a design emulated in other production aircraft of the time, or I think at any time. If viewed as a more typical intake ...
7
votes
2answers
989 views

For maximum glide range, should I minimize glide angle or AoA?

I'm currently taking an aeronautical engineering course in school. For an upcoming project, we're going to build balsa toss gliders and we have to design our own wings. The program we're using (Aery32)...
0
votes
5answers
209 views

How do airplanes measure cross-wind?

Are aircraft equipped with any instruments that measure actual crosswind velocity during a flight? What is that instrument called and is it used by autopilots to apply wind correction?
2
votes
1answer
75 views

Is the fuselage of the CEA 311 Anequim configured as elliptical?

I am currently studying the effects of reduced drag induced by laminar flow on the subsonic aircraft. In order to complete that, I have believed I found the optimal fuselage which has the best ...
-1
votes
1answer
69 views

How to find the battery mass fraction for electrical VTOL aircraft/drone

I am doing an univeristy project to do initial sizing of an electrical vtol drone. Using the aircraft design book from Raymer, I have gotten the battery mass fraction for the cruise, loiter, and climb ...
0
votes
1answer
55 views

How to determine the length of the CD nozzle?

I am designing a convergent nozzle as well as a CD(Converging-Diverging) nozzle. How do I find out the length of those nozzles? If the throat of the CD nozzle has 0 length then what should be the the ...
0
votes
0answers
56 views

Which would be the best placement of an engine for a supersonic buisness jet that has an intake of 2-D ramp? [duplicate]

I would also like to know if possible which would be the advantage/disadvantage of placing the engine under or over the wing for example.
0
votes
1answer
214 views

Are there planes designed for going supersonic in a dive only, not in leveled flight?

Are there any sub-/transsonic planes that are able to go supersonic in a dive without damage nor losing control but can't go above Mach 1 in horizontal flight? Some planes can go into leveled ...
0
votes
2answers
121 views

How is the wing's longitudinal position determined?

What I mean is, for example the MD 80 aircraft have a wing placed way back near the engine why not put it on the center? but the Boeing 737 have a centered wing. I'm asking this because I love to make ...
0
votes
0answers
102 views

Why they don't refuel A-340 airliners in flight? [duplicate]

The A-340 by Airbus was cancelled for ultra-long flying time operations, because fuel load at takeoff had to be enormous, limiting payload, putting it below the costs threshold. I copy this text from ...
0
votes
1answer
123 views

Does the nacelle strut experience reaction forces due to lift, drag, thrust, weight of engine during cruise flight?

Cruise flight indicates that total lift and weight of aircraft cancel and thrust forces generated cancels with total drag forces. However, I am looking closely at the nacelle instead of the whole ...
3
votes
1answer
249 views

How does the 'efficiency' of a magnus effect flier compare to helicopters and fixed wing aircraft?

I recently saw a demonstration of a flier based on the magnus effect. There is a good example on youtube here. How does the flying 'efficiency' compare to conventional designs? When I say efficiency I'...
2
votes
0answers
137 views

How does the 'efficiency' of a cyclorotor compare to helicopters and fixed wing aircraft?

I recently rediscovered the cyclorotor concept. There is a good example on youtube here. Ignoring the mechanical complexity to an extent how does the 'efficiency' compare to conventional designs? When ...
0
votes
1answer
162 views

How should fuel go through pumps?

I understand that in the fuel system of an aircraft, the fuel first go through wobble pumps--manually driven, and then fuel strainers--for filtering out debris, and finally the engine driven pumps. ...
9
votes
3answers
2k views

Do pilots need a fuel pressure/temperature gauge?

Fuel pressure gauge allows you to monitor the fuel pressure while the engine is under a load. However, since the fuel pressure requirement is listed by the engine manufacturer, do pilots even need a ...
1
vote
1answer
126 views

How the German Horten Ho 229 flying wing can cancel the adverse yaw in turning? [duplicate]

How the German Horten Ho 229 flying wing type of aircraft-design, cancel the adverse yaw effect in oblique/ diagonally turns?How the pulley on the controls could mix up to do the dual role (bank and ...

1
2 3 4 5
49