Inefficiency from redirected thrust?

  • Thread starter Thread starter _greg
  • Start date Start date
  • Tags Tags
    Thrust
Click For Summary
SUMMARY

The discussion centers on the efficiency loss associated with thrust redirection in Harrier jets and F-35 aircraft. It is established that redirecting thrust downwards to generate upward lift incurs losses due to turbulence and friction within the redirection duct. The efficiency loss is influenced by factors such as duct design, airflow characteristics, and the angle of thrust redirection. Engineering advancements in ducting mechanisms, as seen in the F-35's design, aim to minimize these losses.

PREREQUISITES
  • Understanding of thrust vectoring principles
  • Familiarity with aerodynamics and airflow dynamics
  • Knowledge of aircraft design, specifically Harrier and F-35 models
  • Basic concepts of turbulence and friction in fluid dynamics
NEXT STEPS
  • Research thrust vectoring technology in F-35 aircraft
  • Explore aerodynamic efficiency improvements in modern fighter jets
  • Study the impact of duct design on thrust redirection efficiency
  • Investigate computational fluid dynamics (CFD) simulations for duct airflow analysis
USEFUL FOR

Aerospace engineers, aircraft designers, and aviation enthusiasts interested in thrust vectoring technology and aerodynamic efficiency in military aircraft.

_greg
Messages
2
Reaction score
0
I am trying to figure out how much thrust would be lost in redirecting it.
I understand that that harrier jets redirect their thrust downwards to generate upward thrust but surely they lose some efficiency due to turbulence and friction inside the redirection duct.
My question is how much is lost? also, what is that loss dependent on? and finally are there any ways to engineer the redirection better so that less thrust is lost.
Thanks in advance for any help in this.
 
Physics news on Phys.org
greg said:
I am trying to figure out how much thrust would be lost in redirecting it.
I understand that that harrier jets redirect their thrust downwards to generate upward thrust but surely they lose some efficiency due to turbulence and friction inside the redirection duct.
My question is how much is lost? also, what is that loss dependent on? and finally are there any ways to engineer the redirection better so that less thrust is lost.
Thanks in advance for any help in this.

I would think you could learn a lot by contrasting the older Harrier jet design with the newer F-35 STO/VOL design. Did they change the ducting mechanism for the newer F-35?
 

Similar threads

A different approach towards Thrust Engines
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Understanding the thrust generated by a typical jet engine
  • · Replies 2 ·
Replies
2
Views
3K
Can a Wing in Ground Effect Racer Be Built for Under $1000 USD?
  • · Replies 15 ·
Replies
15
Views
4K
How exactly does a gas turbine engine produce thrust?
  • · Replies 62 ·
3
Replies
62
Views
31K
Kerbal Space Program - Efficient Launch into Orbit
  • · Replies 5 ·
Replies
5
Views
13K
Graduate Human capacity for G-forces, Energy calculation, and thrust
  • · Replies 2 ·
Replies
2
Views
2K
How can we determine the thrust generated?
  • · Replies 3 ·
Replies
3
Views
2K
Flight Mechanics - Maximum Cruise Altitude
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Thermodynamics: The Jet Engine
  • · Replies 3 ·
Replies
3
Views
3K
Minimal altitude to start a “Suicide Burn” - variable thrust
  • · Replies 21 ·
Replies
21
Views
4K