PLAN Carrier Strike Group and Airwing

Blitzo

Lieutenant General
Staff member
Super Moderator
Registered Member
Re: Aircraft Carriers II

I think STOBAR limit payload, your comments gentlemen, please.

An often claimed axiom with little investigation into whether it's true.

Just saying -- it's not.

no_name translated a great write up regarding Su-33's payload and MTOW on kuznetsov, and basically it said Su-33 could take off from kuznetsov with an operationally competent payload and fuel load, as well as MTOW, depending on the engine Su-33/J-15 used, and more importantly, the headwind the carrier is experiencing.

I believe the greatest advantage a CATOBAR carrier offers is the ability to launch fixed wing AEW planes, which a STOBAR simply cannot no matter how much headwind you give it. CATOBAR also offers the capability to launch fighters reliably without headwind, whereas STOBAR launched fighters may experience engine failure at the crucial moment and fall out under the carrier's path.

Here are the photos:

2qth6jo.jpg

2vwzlhv.jpg

wv27pk.jpg

2iux5w2.jpg

dngj85.jpg

x2pd79.jpg

seu261.jpg

2n9ayd0.jpg


A rough translation of the important bits: MTOW from a normal land based take off is 33tons, and take off from 110m using ski jump with 25 knots of headwind can take off with 32 tons, the MTOW. Without headwind, the 110m launch positions are limited to 28 tons. 110m are the 1 and 2 point take off positions.
From the 195m position it can take off with 32 tons without headwind.


So really this flies in the face of CATOBAR > STOBAR, where it shoudl really be CATOBAR > STOBAR (under certain circumstances)
And it actually makes a lot of sense that planes are still able to fly from STOBAR carriers with a full load or near full load. The Russians designed kuznetsov and ulyvanosk both with ski jumps in mind. The latter would have had cats on the waist, so why not stick them on the bow as well if a ski jump limited payload so much? Also India paid a lot to convert gorshkov into a STOBAR carriers, and they are quite demanding customers. Would they really have bought a carrier which Mig-29Ks cannot fly off with a less than full payload?

The only argument for the inferiority of STOBAR being unable to launch heavily loaded fighters is the lack of photos... but that I think is more due to the fact that the russian navy currently operate the world's only STOBAR carrier and haven't had the funds since kuznetsov was launched to properly arm their fighters. Also, more importantly, the whole "STOBAR can't launch fighters at MTOW" phrase has been repeated so often now without investigation that people simply accept it.


The only way to settle this once and for all is for us to wait for liaoning to launch a fully loaded J-15 or vikram to launch a fully loaded Mig-29K, but I think logic and evidence here should prevail.
 

delft

Brigadier
Re: Aircraft Carriers II

From Bltizo:
I believe the greatest advantage a CATOBAR carrier offers is the ability to launch fixed wing AEW planes, which a STOBAR simply cannot no matter how much headwind you give it.
An aircraft must reach at least minimum control speed before leaving the ski ramp. Fixed wing AEW planes will have good acceleration using propellers and they have a somewhat lower minimum flying speed and minimum control speed so there is no reason they cannot be designed to use ski ramps. You might add a jet engine as was used by An-26. You might go for contra-rotating props and so add about 10 % to the thrust at low speed for a given engine power. Minimum control speed can also be lowered by having a connecting shaft between the engines as used by V-22.
My idea for such a plane has a biplane configuration with wing fences between the wingtips and with side looking radar in those fences and in the bottom part of the vertical tail plane and with fore and aft looking radar in the leading edges and below the trailing edges of the wings. That would do away with the radome above the fuselage. It would also result in a considerably smaller wing span than a monoplane thus easing manovering on the flight deck.
 

delft

Brigadier
Re: Aircraft Carriers II

Italy order book was big, 131 units down to 90, they will buy but not as much as initially stated

For full Cavour operations they need 22 F35B, that is enough for the needs of the Navy
The Netherlands planned to buy 85 and are now down officially to 56, but rumor says 35 if the price doesn't increase further.
A similar reduction would bring Italy to 55. But how well is the price differential between -A and -B known?
 

Franklin

Captain
Re: Aircraft Carriers II

The USN and the Royal Navy are both converting to F-35's for their carriers in the near future. How are they going to work the internal weapons bay of that plane on the decks ?
 

bd popeye

The Last Jedi
VIP Professional
Re: Aircraft Carriers II

The USN and the Royal Navy are both converting to F-35's for their carriers in the near future. How are they going to work the internal weapons bay of that plane on the decks ?

They will just open the bomb bay and load it. The USN loads most weapons by hand. I'm not sure about the RN.
 

Jeff Head

General
Registered Member
Re: Aircraft Carriers II

depending on the engine Su-33/J-15 used, and more importantly, the headwind the carrier is experiencing.

CATOBAR also offers the capability to launch fighters reliably without headwind, whereas STOBAR launched fighters may experience engine failure at the crucial moment and fall out under the carrier's path.
And in essence, these two statements make the point.

CATOBAR with four cats will get more aircraft airborne with full loads in far more conditions than STOBAR.

Of course if you have a strong enough engine and the proper thrust to weight ratio, you can get airborne, but the conditions have to be right, and your aircraft and pilot have to be able to handle the loads placed on them. So, while there is no doubt in my mind that STOBAR can get a well laden aircraft into the air under certain conditions, it is not able to do so in nearly as many conditions as a CATOBAR can...which projects a significant dis-advantage on a STOBAR carrier if they ever have to meet at sea.

As to the Russians, the idea that they have not been able to "afford," fully laden aircraft is just not so. We see them do so in other exercises for their air force, and so if they wanted they could for the navy too. I believe that the biggest issue with the Russians has been their doctrine. The operate the Kuznetsov (to date) more as a floating air defense base to protect their submarines and their other surface vessels with the large anti-surface missiles strike forces.

Perhaps with the Mig-29K air wing coming we will see that change and see the Russians actually start preparing their aircraft carrier air wing for strike at sea missions.

Just the same, I believe there are significant limitations to STOBAR, but not that those limitations are absolute when it comes to laden aircraft. With the right engines and in the right wind conditions, they certainly should be able to get aircraft with decent loads into the air. Their problem when compared to CATOBAR is that they cannot do it nearly as regularly or often, which means they suffer from a significant handicap in that regard.
 

bd popeye

The Last Jedi
VIP Professional
Re: Aircraft Carriers II

They will just open the bomb bay and load it. The USN loads most weapons by hand. I'm not sure about the RN.

I forgot something..The USN flew S-3 Vikings from carriers from 1975 to 2009.. that's 34 years... and the S-3s had a bomb bay. I was assigned to VS-33(S-3A squadron) from November 1980 until November 1982.
 

Jeff Head

General
Registered Member
Re: Aircraft Carriers II

I forgot something..The USN flew S-3 Vikings from carriers from 1975 to 2009.. that's 34 years... and the S-3s had a bomb bay. I was assigned to VS-33(S-3A squadron) from November 1980 until November 1982.
Yes they did. Two bays forward of the sonar buoys dispensers.


Screen_120517_012213.jpg


In addition, another even larger aircraft also had a bomb bay on the carriers. From 1961-1963 the A-5A and A-5B Vigilantes served and they had a large bomb bay too. They were mach 2, supersonic, nuclear armed strike bombers to be launched from carriers. Here are some operating off of the USS Enterprise (CVN-65) in 1962.


A3J-1s_VAH-7_CVAN-65_NAN11-62.jpg


Here's a picture of the bomb bay. It was located between the two engines and the single nuclear bomb was ejected out the back of the bombay and the aircraft aircraft, propelled with a 50 fps speed out the back, and so the bomb took a ballistic track.


400351886_6ab4c3678c_o.jpg


Once the SSBN subs began deploying on their nuclear deterrence partrols after 1963 all Vigilantes were either converted to, or built as the RA-5C Recon version. In that role the bomb bay was filled with extra fuel tanks and no longer used for any weapons.


RA-5C_Vigilante_RVAH-7_1979.jpg


The RA-5C was retired in early 1980 after being completely replaced by recon versions of fighters like the F-8 Crusader and then the F-14 tomcat, and now the Hornets.
 

bd popeye

The Last Jedi
VIP Professional
Re: Aircraft Carriers II

While aboard America in 1981 the only thing we loaded in the bomb bay were mines and torpedos. We used a hoist.
We loaded thousands upon thousands of sonobouys. <<<THOUSANDS>>>

[video=youtube;C7Cny_zb-h4]http://www.youtube.com/watch?v=C7Cny_zb-h4[/video]

I miss my old seafaring days but I don't miss what these photos depict..

Please, Log in or Register to view URLs content!


Petty Officer 1st Class Malik Leslie hugs his children, from left, Layla, 3, Malik, 7, and Seth, 5, as he and about 6,000 other sailors assigned to the Harry S. Truman deploy from Norfolk Naval Station on Monday, July 22, 2013. (Stephen M. Katz | The Virginian-Pilot)

Please, Log in or Register to view URLs content!


Jacob Patterson, 2, of Chesapeake and his mother, Ashley, say goodbye to his father, Petty Officer 2nd Class Mark Patterson, as the carrier Harry S. Truman deploys from Norfolk Naval Station on Monday, July 22, 2013. (Stephen M. Katz | The Virginian-Pilot

Please, Log in or Register to view URLs content!


Sue Yingling of Pennsylvania hugs her daughter Lt. j.g. Shannon Yingling, a pilot, as she and about 6,000 others assigned to the carrier Harry S. Truman deploy from Norfolk Naval Station on Monday, July 22, 2013. (Stephen M. Katz | The Virginian-Pilot

Please, Log in or Register to view URLs content!


Nanci Reyes of Suffolk and her daughter Gaby, 15 months, see off her husband, Petty Officer 1st Class Benny Reyes, as the carrier Harry S. Truman deploys from Norfolk Naval Station on Monday, July 22, 2013. (Stephen M. Katz | The Virginian-Pilot)

Please, Log in or Register to view URLs content!

Please, Log in or Register to view URLs content!


NORFOLK (July 22, 2013) Families of Sailors assigned to the aircraft carrier USS Harry S. Truman (CVN 75) watch as the ship departs its homeport of Naval Station Norfolk. Truman is deployed as part of the Harry S. Truman Carrier Strike Group supporting maritime security operations and theater security cooperation efforts in the U.S. 5th and 6th Fleet areas of responsibility.(U.S. Navy photo by Mass Communication Specialist 3rd Class Shannon M. Smith/Released)

Please, Log in or Register to view URLs content!

Please, Log in or Register to view URLs content!


NORFOLK (July 22, 2013) Sailors man the rails aboard the aircraft carrier USS Harry S. Truman (CVN 75) as it departs its homeport of Naval Station Norfolk. Truman is deployed as part of the Harry S. Truman Carrier Strike Group supporting maritime security operations and theater security cooperation efforts in the U.S. 5th and 6th Fleet areas of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Shannon M. Smith/Released)

Please, Log in or Register to view URLs content!

Please, Log in or Register to view URLs content!


NORFOLK (July 22, 2013) Families of Sailors assigned to the aircraft carrier USS Harry S. Truman (CVN 75) watch as the ship departs its homeport of Naval Station Norfolk. Truman is deployed as part of the Harry S. Truman Carrier Strike Group supporting maritime security operations and theater security cooperation efforts in the U.S. 5th and 6th Fleet areas of responsibility. (U.S. Navy photo by Mass Communication Specialist 2nd Class Eric S. Garst/Released)
 

stack

New Member
Re: Aircraft Carriers II

Again , problem of the lifts , hangar space and deck length . Yes , F-35B could take off vertically like Harrier , but to have meaningful range and payload it would have to perform rolling takeoff . Being heavier , it would require more deck .

Slightly off topic here. Can F-35B take off vertically and make the transition from vertical flight to horizontal flight in the air? I have seen videos of Harrier doing that, but I have yet to see any video on F-35B performing such flight transition.
 
Top