CV-18 Fujian/003 CATOBAR carrier thread

[plawolf]

The length of the catapults determines the acceleration needed to get to launch speed. That, in turn, is limited more by human physiology and tolerances than anything else, hence the similar lengths.

 

[Red tsunami]

My own rough comparison…

https://twitter.com/i/web/status/1462903483254800385

76.2m?

 

[AndrewS]

The length of the catapults determines the acceleration needed to get to launch speed. That, in turn, is limited more by human physiology and tolerances than anything else, hence the similar lengths.

The French carrier uses the same C13 steam catapult as the US, but the length is listed as 50m rather than 75m. The French one is listed with the same end speed, but with a lower maximum weight.

That implies 50m is workable from an acceleration point of view

 

[Paulo R Siqueira]

76,2m?
View attachment 79328

The dry dock width is 82 meters, the 003 must be between 80 and 82 meters at its maximum width. The length of the 003 should be somewhere between 318 and 322 meters.

 

[asif iqbal]

its a big carrier

how does it compare to the HMS Queen Elizabeth ?

 

[taxiya]

The French carrier uses the same C13 steam catapult as the US, but the length is listed as 50m rather than 75m. The French one is listed with the same end speed, but with a lower maximum weight.

That implies 50m is workable from an acceleration point of view

You actually refuted yourself.

less maximum (take off) mass means less total kinetic energy needed, therefor shorter distance for an aircraft to accumulate that energy to reach the same end speed as an heavier counterpart.

 

[AndrewS]

You actually refuted yourself.

less maximum (take off) mass means less total kinetic energy needed, therefor shorter distance to accumulate that energy to reach the same end speed.

Uh no

I was responding to the comment that 75m was the minimum length of catapult required, and that this limitation was due to allowable acceleration

But if the French version is only 50m long and has the same end-speed, that implies a higher acceleration is acceptable

It's not a comment on the energy requirement, if you read it again

 

[taxiya]

Uh no

I was responding to the comment that 75m was the minimum length of catapult required, and that this limitation was due to allowable acceleration

But if the French version is only 50m long and has the same end-speed, that implies a higher acceleration is acceptable

It's not a comment on the energy requirement, if you read it again

you are right. I wasn't paying attention to "acceleration".

 

[Intrepid]

A shorter catapult puts more strain on the airframe.

 

[Richard Santos]

It would be interesting to see how long is the machinery section of the 003, and compared to that of the Ford. I suspect the greater length of the Ford might b3 necessitated by greater space requirement of nuclear power plant.