Can Space Aircraft Reach Speed of Light in Vacuum?

firin81
Messages
2
Reaction score
0
As we known, the force applied to the plane that fly in the atmosphere is to keep plane moving forward. The force given is to against the pressure of the air. If a space aircraft flies in the vacuum, the force given to it will accelerate aircraft because there is no friction caused by air pressure. Hence, the speed of aircraft will keep increasing. if we keep to give force to the aircraft, can the aircraft reach the speed of light?
 
Physics news on Phys.org
firin81 said:
As we known, the force applied to the plane that fly in the atmosphere is to keep plane moving forward. The force given is to against the pressure of the air. If a space aircraft flies in the vacuum, the force given to it will accelerate aircraft because there is no friction caused by air pressure. Hence, the speed of aircraft will keep increasing. if we keep to give force to the aircraft, can the aircraft reach the speed of light?
If you put an aircraft in a vacuum it would not be able to accelerate at all!
 
No, the inertia of an objec increases with its velocity.
 
Hi Firin welcome to Physicsforums. :smile:

As measured from Earth, you could almost reach the speed of light with a spacecraft .
An infinite amount of energy would be needed to get it to reach exactly the speed of light.
 
Thanks for all your comment.
 
PeroK said:
If you put an aircraft in a vacuum it would not be able to accelerate at all!
Come on, this is not the point PeroK. :smile:
 

Thread 'A sufficient condition for integrability of equation ##\nabla g=0##'

In Philippe G. Ciarlet's book 'An introduction to differential geometry', He gives the integrability conditions of the differential equations like this: $$ \partial_{i} F_{lj}=L^p_{ij} F_{lp},\,\,\,F_{ij}(x_0)=F^0_{ij}. $$ The integrability conditions for the existence of a global solution ##F_{lj}## is: $$ R^i_{jkl}\equiv\partial_k L^i_{jl}-\partial_l L^i_{jk}+L^h_{jl} L^i_{hk}-L^h_{jk} L^i_{hl}=0 $$ Then from the equation: $$\nabla_b e_a= \Gamma^c_{ab} e_c$$ Using cartesian basis ## e_I...
View full post »

Thread 'Relativator (Circular Slide-Rule): Simulated with Desmos - Insight'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. The Relativator was sold by (as printed) Atomic Laboratories, Inc. 3086 Claremont Ave, Berkeley 5, California , which seems to be a division of Cenco Instruments (Central Scientific Company)... Source: https://www.physicsforums.com/insights/relativator-circular-slide-rule-simulated-with-desmos/ by @robphy
View full post »

Thread 'Hawking After 54 Years Confirmed: BH surfaces don't shrink'

Abstract The gravitational-wave signal GW250114 was observed by the two LIGO detectors with a network matched-filter signal-to-noise ratio of 80. The signal was emitted by the coalescence of two black holes with near-equal masses ## m_1=33.6_{-0.8}^{+1.2} M_{⊙} ## and ## m_2=32.2_{-1. 3}^{+0.8} M_{⊙}##, and small spins ##\chi_{1,2}\leq 0.26 ## (90% credibility) and negligible eccentricity ##e⁢\leq 0.03.## Postmerger data excluding the peak region are consistent with the dominant quadrupolar...
View full post »

Similar threads

B Meaningfulness of the speed of light
Replies
25
Views
2K
B Light Speed in Vacuum: Does It Reach Cosmic Limit?
Replies
12
Views
3K
B Speed of Light in Free Space - Einstein's Second Principle
Replies
8
Views
2K
B Measuring Speed of Light: Transit Time & Interference
Replies
18
Views
2K
B Why does it require an infinite amount of energy to reach the speed of light?
3
Replies
130
Views
13K
I Speed of Light Could be Reached and Indeed even Exceeded
Replies
21
Views
2K
B Why is it impossible to go faster than the speed of light?
Replies
21
Views
3K
B Let me ask a thing about the Speed of Light
Replies
6
Views
1K
B Energy, Mass, Speed of Light: Can We Reach It?
Replies
9
Views
2K
B Questions about the Speed of Light, Time, etc.
2
Replies
74
Views
5K

Hot Threads

Recent Insights

Back
Top