# Questions tagged [thrust-vectoring]

Questions about technology used to change direction of an aircraft's thrust to provide more maneuverability.

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### What is the maximum speed at which thrust vectoring can be used? Thrust Vectoring on the SR-71

The SR-71 is limited to a 45 degree bank turn at speeds in between mach 2.85 to ~3.2. This means the blackbird would take almost 5 1/2 minutes to make a 180 degree turn at mach 3. Would it be possible ...
1 vote
104 views

### Does thrust vectoring create an additional pitching moment by changing mass flow direction?

Thrust vectoring changes the direction of exhaust gasses to provide force in the direction the nozzle is pointing. Going back to the ancient Greek steam jet, the aeolipile, building pressure inside ...
286 views

### How does the Urbanaero flying car move forward?

From the pictures of UrbanAero flying car: https://www.urbanaero.com/cityhawk, I can see that can achieve VTOL using the two propeller in front of and in the back of the passenger compartments. ...
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### Where in the cockpit of a fighter such as the F-22 or Su-57 is thrust vectoring controlled? [duplicate]

Does it use the stick? Pedals?
968 views

### Electric ducted fan with thrust tube thrust and exit velocity calculation

I am working on an electric ducted fan rocket that has thrust vector control, see image 1. The 90mm EDF is located a bit higher above this blue section, near 1., so I believe the blue section becomes ...
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### Why do thrust vectoring nozzles delay?

I saw a video demonstrating the SU-30's thrust vectoring nozzles and noticed that the horizontal stabilizers begin moving up/down before the nozzles do. It seems that the F-22 also has this delay. ...
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### What is the effect of thrust vectoring effect on the rate of turn?

I just got a question after reading my old Principles of Flight book. The equation for the rate of turn is $\textrm{ROT} = 1,091 \cdot \frac{\tan(\phi)}{V}$, with $\phi$ denoting bank angle and $V$ ...
95 views

### The cost of maintaining VTOL devices

Which device for VTOL flight costs the most to maintain for a given number of flight hours? A tiltwing mechanism? A 2D thrust-vectoring nozzle (vectoring only between VTOL position and cruise ...
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### Why does a Thrust Vector Control System increase maneuverability?

So why can a thrust vector control system increase my maximum g-load capacity? Because still n=L/G is relevant and if I can not provide enough lift (pointing up) to counter balance the thrust (...
2k views

### How much thrust is lost through a curved exhaust nozzle?

In modern VTOL aircraft energy is usually directed through nozzles to achieve vertical lift. How much energy is lost when changing the direction of flow in static thrust conditions?
340 views

### What does it mean "two plane thrust vectoring nozzle"?

It has been said that only Sukhoi 35 has the "two plane TVN" others like F 22 and Su 30MKI (produced by India under license at Hindustan Aeronautics Limited) have "one plane TVN".So what the ...
786 views

### Why don't modern F-16s incorporate the VISTA thrust vectoring?

Modern incarnations of the F-16, such as the Block 70/72, F-16I and F-16IQ appear to incorporate many modern technologies. These aircraft are also rather different from the original F-16A, being ...
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### Can thrust vectoring be used to enable the use of flaps on tailless delta-winged aircraft?

I'm considering flying wings as well as airplanes with only vertical stabilizer for their compact size, efficiency and high speed. As I can't find a working example of such scheme, theoretical ...
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### How to design a near vertical take off airplane?

How to design a near vertical take off airplane, conceptually? Say I have an airplane, similar to a Zenith 701. Say that it has a stall speed of 50 mph and a wing area of 60 sq ft, and it weighs ...
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### At what altitude does a wing become useless? [duplicate]

At what speed or altitude does an aircraft become more efficient as a rocket then a plane using thrust vectoring instead of the wings to steer? At what altitude did the flight control surfaces of the ...
• 1
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### Does the F-35B use its articulating rear jet nozzle for thrust vectoring?

Does the F-35B use its articulating rear jet nozzle for thrust vectoring?
1 vote
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### Disadvantages of using thrust vectoring only in an aircraft with variable rotation nacelles such as the X-19

Take a quad tilt rotor aircraft such as the curtiss-wright X-19 or even a bi-tilt aircraft such as the V-22. What would be the advantages or disadvantages of using thrust vectoring only for control ...
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### Why do jets with 3-D thrust vectoring never hover nose up, but instead move slowly forward?

I've seen several impressive videos of fighter aircraft moving incredibly slowly by essentially hovering on the engines, balancing using thrust vectoring. For example: This Su-10 This Su-37 Large ...
1 vote
687 views

### How bad is the efficiency of jet engines under low loads?

VTOL operations need 4-5 times more thrust than a conventional take-off of an aircraft. If you don't want to install additional lift-engines into a hypothetical aircraft and use thrust vectoring to ...
3k views

### Can a F-35 shoot while hovering?

I know fictional aircraft are different than real ones but there is an F38 on Black Ops 2 (F35 based plane in 2025) http://callofduty.wikia.com/wiki/FA38 It appears in a mission like this ...
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1 vote
2k views

### What would be the best fan duct design to achieve maximum thrust?

I have a few brushless motors and I am trying to get the best thrust out of each motor. I am busy doing some research but can't get a clear answer. What would be the best fan duct design to achieve ...
7k views

### Why do propellers on aircraft have a slight offset angle?

Single-engine aircraft (one propeller on the 'nose') Why do propellers on aircraft have a slight offset angle? I have picked up this information that the rotational axis of the propeller is not ...
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### Are wings any more efficient at creating lift, versus orienting the engine's thrust downwards?

As I understood from this article, wings on an airplane basically create lift by pushing air down. Maintaining the lift force expends energy because air needs to be continually accelerated downwards. ...
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### How does the F-35 hover?

The picture shows the aircraft hovering; how does it do that?
2k views

### Why don't aircraft use gimbaled engines instead of flaps? [duplicate]

Why do aircraft use flaps rather than vectoring the engine or angling the engine? Elon Musk said he would gimbal the engine like a rocket with the aim of reducing total weight of the aircraft and ...
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### Are fixed wing aircraft with gimbal thrust feasible?

Elon Musk has suggested that he'd look at implementing VTOL electric aircraft with a "gimballed thrust" system similar to the one used in rockets. Aircraft have all these unnecessary things like ...
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### Why is Russian super-maneuverable thrust vectoring more prevalent than American?

Based on the sheer number of super-manouverable thrust vectoring Russian fighter jets, it seems that Russia has put more effort into developing thrust vectoring for enhanced maneuverability than the ...
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### Is it possible to tilt a propeller for attitude control, similarly to jet thrust vectoring?

Are there examples of propellers tilted in a controlled way to help in attitude control for pitch and yaw, adding a torque component? Tilted propeller assumption This would be similar to thrust ...
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### How is thrust vectoring controlled by the pilot?

Thrust vectoring is used to extend the manoeuvrability of aircraft outside a `normal' flight envelope, by providing (optionally differential) vectored engine thrust, as explored in many previous ...
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