The new F-35 can't land vertically - at least not twice.

mikea

Touchdown! Greaser!
Gone West
Joined
Feb 12, 2005
Messages
16,975
Location
Lake County, IL
Display Name

Display name:
iWin
The F-35B—the version of the Joint Strike Fighter that the Marines and the British are buying—is designed to take off in a few hundred feet and land vertically, like a helicopter. Its advocates say that will allow the Marines to use short runways worldwide as improvised fighter bases, providing air cover for expeditionary forces. But to do VL, the engine thrust must be pointed straight downward, and the jet is twice the size of a Harrier. Result: a supersonic, pulsating jackhammer of 1,700-degree F exhaust gas.

In December 2009, the Naval Facilities Engineering Command (Navfac) issued specifications for contractors bidding on JSF construction work. The main engine exhaust, the engineers said, was hot and energetic enough to have a 50% chance of spalling concrete on the first VL. (“Spalling” occurs when water in the concrete boils faster than it can escape, and steam blows flakes away from the surface.)


http://www.thedailybeast.com/articl...t-stealth-jet-land-like-it-s-supposed-to.html

Okomo, Kokomo, talk about a hot foot.
 
Why would they need to land vertically on a runway anyway? When Marine Harriers deployed to OEF They operated from 10,000 + ft of runway. Vertical landings have always been the need to get back about ship. They've already demonstrated this effectively.

If there is a need for VTOL, you simply set up AM-2 matting like they've always done with Harriers.
 

Attachments

  • harrier.jpg
    harrier.jpg
    548.1 KB · Views: 128
The whole F 35 program is a disaster. Wayyyy over budget, doesn't fly often, major political screwup. Will go downcast as a terrible costly blunder.
 
So, a very average government success story

I would differ. Many military aircraft have been excellent. Not to mention the highway system, second to none, the Internet, GI bill, health research at various top flight universitys, on and on, endless success story's.
 
I would differ. Many military aircraft have been excellent. Not to mention the highway system, second to none, the Internet, GI bill, health research at various top flight universitys, on and on, endless success story's.

All old accomplishments long before the current crop of idiots.....of both parties.
 
The requirement for the Marines was that the fighter be able to land on a 3000 foot improvised runway deep into the front.

Exactly. That's why vertical landing isn't important for the land based mission. They could easily do a roll on to an improvised strip. Once established on that strip they can lay the AM-2 matting like on the pic I attached.

I'm not supporting the F-35 program as a whole but this article is pointless.
 
Why would they need to land vertically on a runway anyway?
Where does/will the FRS do workups prior to shipboard quals?

That being said I think it's funny that "we" think the media are never accurate in matters pertaining to general aviation but always dead-on in matters of military aircraft and government contracts. :rolleyes:

Nauga,
who is not a fan of the program or the trade press
 
Last edited:
Where does/will the FRS do workups prior to shipboard quals?

That being said I think it's funny that the media are never accurate in matters pertaining to general aviation but always dead-on in matters of military aircraft and government contracts. :rolleyes:

Nauga,
who is not a fan of the program or the trade press

VMFA-121 had been doing vertical landings for about a year now in Yuma. Huge amount of money been put into facilities out there.
 
VMFA-121 had been doing vertical landings for about a year now in Yuma.
Haven't heard reports of 'em chunking up runways in Yuma, and I know they have hover pads there. Maybe they didn't read the article? ;)

Nauga,
and a little muckraking
 
VMFA-121 had been doing vertical landings for about a year now in Yuma. Huge amount of money been put into facilities out there.

Awesome, I was in VMA-121 in 1974. When I got there they had just started upgrading from A-6A to Es.
 
Awesome, I was in VMA-121 in 1974. When I got there they had just started upgrading from A-6A to Es.

Yeah when I did ATC in the Corps they were based at Miramar and had Hornets. Only Marine A-6s I worked were VMFA-332 guys in 93 right before they transitioned. Always liked the Intruder.
 
Last edited:
The whole F 35 program is a disaster. Wayyyy over budget, doesn't fly often, major political screwup. Will go downcast as a terrible costly blunder.


I see them fly nearly 5 days a week.

There are between 12-18 on base at Eglin and another dozen or so out west.
 
Can't speak for the concrete effect (other than echo McFly's comment about the lack of complaints coming out of Pax River and Yuma), but I can say from personal experience that it does just fine with vertical landings on the LHD. Two rounds of developmental testing on WASP and our deck hasn't been damaged. The current structural mods we are getting have more to do with long term support for the weight of this thing (MUCH larger than an AV-8).
 
My question is how much the F-35B can carry if it had to take off vertically. If the lift system generates low 40k of thrust, and the jet weighs 32k empty (a number that will only grow), how much does that leave for fuel and weapons? It's a question for me because a lot of the selling I've heard recently for the USMC is based off of its VTOL capabilities.

I don't know how much excess thrust you need to do a vertical takeoff, but those numbers sure don't give you much flexibility. What are you gonna do, take off with two bombs, two AIM-120s, gun, and 2,000lbs of fuel? Then hit an Osprey tanker?
 
Last edited:
My question is how much the F-35B can carry if it had to take off vertically. If the lift system generates low 40k of thrust, and the jet weighs 32k empty (a number that will only grow), how much does that leave for fuel and weapons? It's a question for me because a lot of the selling I've heard recently for the USMC is based off of its VTOL capabilities.

I don't know how much excess thrust you need to do a vertical takeoff, but those numbers sure don't give you much flexibility. What are you gonna do, take off with two bombs, two AIM-120s, gun, and 2,000lbs of fuel? Then hit an Osprey tanker?

The F-35B's intended mission does not involve vertical takeoffs. The mission is Short TakeOff, Vertical Landing (STOVL). Why vertical landing and short takeoff? Dunno, but that's how the spec's were written.
 
Why vertical landing and short takeoff? Dunno, but that's how the spec's were written.

Because of the nature of operating from an LHD.

Like anything in aviation, it's a trade off between capability and payload. The aircraft ( much like an AV-8) can takeoff vertically with no load, but if you want to carry fuel and ordnance, something has to give, so the specs called for STOVL.
 
Last edited:
Because of the nature of operating from an LHD.

Like anything in aviation, it's a trade off between capability and payload. The aircraft ( much like an AV-8) can takeoff vertically with no load, but if you want to carry fuel and ordnance, something has to give, so the specs called for STOVL.

Yep, just like helicopters. You reach a weight and at a particularly high DA were you don't have the power to go vertically throught ground effect so you do a rolling takeoff. After you do your mission and shed some pounds you can come back and land vertically.
 
Last edited:
Yep, just like helicopters. You reach a weight and at a particularly high DA were you don't have the power to go vertically throught ground effect so you do a rolling takeoff. After you do your mission and shed some pounds you can come back and land vertically.
Good point. The UH-1s for example can't take off vertically with any kind of load. They have to have a deck run.
 
The F-35B's intended mission does not involve vertical takeoffs. The mission is Short TakeOff, Vertical Landing (STOVL). Why vertical landing and short takeoff? Dunno, but that's how the spec's were written.

I meant VTOL... oops. And yes, some of the selling points/things I've heard involve vertical takeoff... distributed operations, operating inside the enemy's targeting cycle, closer to the FLOT, etc, which is why I brought up its payload using VTOL. Not saying I buy it.

I also don't understand the USMC mix of 340 F-35B and 80 F-35C. The USMC has two boat F-18 squadrons and I'm going to guess around 6 or 7 fleet Harrier squadrons. Out of maybe 20 TACAIR squadrons that's less than half that go to the boat, yet the buy mix is 80% of the B - heavier, only 6.0g, only carries as much fuel internally as a single wet Hornet but burns more, costs more than the other F-35, instead of buying more Cs or even As.
 
Last edited:
Because of the nature of operating from an LHD.
...

I was gonna ask why a fighter would have to be close to the front, but I guess it helps if it's there and ready to go into action and not 30 minutes out.
 
Haven't heard reports of 'em chunking up runways in Yuma, and I know they have hover pads there. Maybe they didn't read the article? ;)

Nauga,
and a little muckraking

Well, for spalling you need moisture in the concrete; when was the last time Yuma had moisture in the concrete?:rofl:
 
Can't speak for the concrete effect (other than echo McFly's comment about the lack of complaints coming out of Pax River and Yuma), but I can say from personal experience that it does just fine with vertical landings on the LHD. Two rounds of developmental testing on WASP and our deck hasn't been damaged. The current structural mods we are getting have more to do with long term support for the weight of this thing (MUCH larger than an AV-8).

When it lands on the LHD, is it a true vertical landing, or is it a relative vertical landing on a ship moving into the wind giving the plane 15+kts of airspeed?
 
I also don't understand the USMC mix of 340 F-35B and 80 F-35C. The USMC has two boat F-18 squadrons and I'm going to guess around 6 or 7 fleet Harrier squadrons. Out of maybe 20 TACAIR squadrons that's less than half that go to the boat, yet the buy mix is 80% of the B - heavier, only 6.0g, only carries as much fuel internally as a single wet Hornet but burns more, costs more than the other F-35, instead of buying more Cs or even As.

To understand the difference in numbers, it helps to understand how the F-35 is intended to fit into the arsenal. With the exception of the AV-8, the F-35 is not intended to replace anything. I can't speak for the Air Force plans, but from what I have seen, for the USN/USMC, the F-35C will augment existing Hornet squadrons. So you will have only a few F-35Cs deploying with any given F-18 squadron, thus no need for the Marines to have large numbers of the C.
 
When it lands on the LHD, is it a true vertical landing, or is it a relative vertical landing on a ship moving into the wind giving the plane 15+kts of airspeed?

Depends on what the ship/winds are doing. I don't know what the final wind envelopes will be, but we tested in a large range of combinations. But, obviously the aircraft adjusts for wind/ship speed and direction in order to land on the intended spot.
 
I can't speak for the Air Force plans, but from what I have seen, for the USN/USMC, the F-35C will augment existing Hornet squadrons. So you will have only a few F-35Cs deploying with any given F-18 squadron, thus no need for the Marines to have large numbers of the C.

That is not the plan for the USN side at least; ie it will be a full transition for each squadron to go F-35C, just like when a squadron moves from Hornet to Rhino. Mixing would be a logistical and training nightmare for any operational squadron for a lot of reasons. I know on occasion, due to limited airframes, the USMC guys will deploy with mixed C's and D's, but that is the same airplane for NATOPS currency and 4790/MX purposes, and as a pilot you can hop between the two any time you want. Out at Fallon you have "dual qual'd" guys, as in F/A-18A-G as well as F-16, but that is a completely different environment than one of a deployed unit.
 
That is not the plan for the USN side at least; ie it will be a full transition for each squadron to go F-35C, just like when a squadron moves from Hornet to Rhino. Mixing would be a logistical and training nightmare for any operational squadron for a lot of reasons. I know on occasion, due to limited airframes, the USMC guys will deploy with mixed C's and D's, but that is the same airplane for NATOPS currency and 4790/MX purposes, and as a pilot you can hop between the two any time you want. Out at Fallon you have "dual qual'd" guys, as in F/A-18A-G as well as F-16, but that is a completely different environment than one of a deployed unit.

When did that change? Not saying I don't believe you, but it was the initial plan I saw. I agree that mixing would be a nightmare.
 
When did that change? Not saying I don't believe you, but it was the initial plan I saw. I agree that mixing would be a nightmare.

Maybe it was that way early on. Haven't seen anything like that on any MAP in the last 3-4 years though. Incidentally, my squadron was initially intended to be the first to transition (though well after I leave for my shore tour pretty soon), and that has changed about 10 times. We went from being the first 35 squadron, to getting high lot E's, to being the last charlie squadron, and most recently back to getting high lot E's (again, well after I leave). So it is a living document to be sure, but I haven't heard anything about mixed squadrons.
 
Maybe it was that way early on. Haven't seen anything like that on any MAP in the last 3-4 years though. Incidentally, my squadron was initially intended to be the first to transition (though well after I leave for my shore tour pretty soon), and that has changed about 10 times. We went from being the first 35 squadron, to getting high lot E's, to being the last charlie squadron, and most recently back to getting high lot E's (again, well after I leave). So it is a living document to be sure, but I haven't heard anything about mixed squadrons.

I think what I saw was an initial acquisition plan. I don't recall how old it was.

Do you know where you're going for shore duty yet?
 
The good part: No night traps.
The bad part: No day traps either ;)

Nauga,
and his strain gauges

That's ok.....you guys can have both the day and the night traps :) That is one career total that I have very little interest in......

@ Fearless, no I won't know for a couple more months, when my slate goes down. We'll see....there have been a lot of guys going to T-45's lately, which isn't exactly at the top of my list. Then again, that could be either a bad sign or a good sign. Mainly I'm just trying to get back to the west coast, so Fallon, China Lake, or Lemoore are at the top of my list. No word yet if there is an AF exchange slot on my slate, but I would be interested in that as well (15's or 16's)
 
I would differ. Many military aircraft have been excellent. Not to mention the highway system, second to none, the Internet, GI bill, health research at various top flight universitys, on and on, endless success story's.

1. Highway system. Okay, but have you looked at where the highway funds now go? We were told the stimulus package would help our infrastructure, but now we are told we need to spend more. Good article on the subject:
http://www.downsizinggovernment.org/transportation/federal-highway-funding
2. Internet. One of the OWTs is that the government invented the internet. Not really. Xerox. Of course.
http://online.wsj.com/news/articles/SB10000872396390444464304577539063008406518
3. GI Bill was good, but it was money granted to GI's and used in a private enterprise, the purchase of a college education. As the government decided this was a great idea and got more and more involved in the education system costs exploded to the point where we now have a student loan bubble, thanks to the government.
http://www.usnews.com/opinion/blogs...overnment-shouldnt-subsidize-higher-education
4. Ahh yes, critical health research. Like the study on why chimps throw their poop? Or the $5 million spent on the website Sexpulse? Or maybe you meant that critical study costing over $1million on how playing World of Warcraft might help seniors? I'm sure that was well spent. No- you must mean the study on the benefits of watching reruns on TV.
 
That's ok.....you guys can have both the day and the night traps :) That is one career total that I have very little interest in......



@ Fearless, no I won't know for a couple more months, when my slate goes down. We'll see....there have been a lot of guys going to T-45's lately, which isn't exactly at the top of my list. Then again, that could be either a bad sign or a good sign. Mainly I'm just trying to get back to the west coast, so Fallon, China Lake, or Lemoore are at the top of my list. No word yet if there is an AF exchange slot on my slate, but I would be interested in that as well (15's or 16's)


Good luck. The Navy exchange guy at Kadena (F15) just got hired here in my guard unit so he's leaving there soon.
 
What about an exchange program with another country? I know they took our guys flying Harriers and Tornados in the UK back in the day. Do they have any openings for "yanks" flying Typhoons today? Buddy of mine flew H-3s on a Canadian exchange program years ago.
 
Good luck. The Navy exchange guy at Kadena (F15) just got hired here in my guard unit so he's leaving there soon.

Yeah I think that one is out, unless there is more than one navy guy there, since a guy I know just got it recently.
 
What about an exchange program with another country? I know they took our guys flying Harriers and Tornados in the UK back in the day. Do they have any openings for "yanks" flying Typhoons today? Buddy of mine flew H-3s on a Canadian exchange program years ago.

Yeah, for VFA/Hornets there are exchanges with the UK for Tornados and Typhoons, Spain EF-18, Canada CF-18, Swiss F-18, Australia F/A-18F, France Super Etendard and Rafale, and I'm not sure if the one in Germany still exists. They don't open up very often, and they are not "hard fills" (as in they only get filled if all the other USN production/instructor billets get filled), so it isn't that common to grab. It would be a really cool experience I'm sure, and I'd be happy doing it, but there are also some significant negative ramifications in doing one when it comes to FITREPS.....basically you walk out the door at the end with several non-competitive 1 of 1 FITREPS that can very likely screw you in the future.....or at least require you to do a really undesirable follow on job to become "competitive" once again......which is basically the bureau's way of making you pay back such a good deal. At least that is my understanding from several front office discussions about the matter. I'm sure mileage varies depending on the person, and their specific circumstances but that is the gist I got.

AF exchange presents similar issues, but as I understand, is not as detrimental. For us, during your shore tour, you are with very very few exceptions (as in someone wants to get out and just asked for something different), expected to go to a flying tour.....and that flying tour, in the minds of BUPERS, should be a "production billet" where you are either a Hornet/F-35 instructor, a T-45 instructor, an SFTI (TOPGUN graduate) serving in Fallon or one of the the weapons schools, a TPS grad working in one of the test squadrons, or working at Strike in Fallon as an airwing instructor. Anything other than that is seen as either neutral to bad.....common ones being adversary/aggressor and any exchange tour. That's unfortunate in my mind, because those tours give you some cool unique experiences, but it also drives away the guys who are really chomping at the bit to make command.

That was a very long answer to a short question :)
 
1. Highway system. Okay, but have you looked at where the highway funds now go? We were told the stimulus package would help our infrastructure, but now we are told we need to spend more. Good article on the subject:
http://www.downsizinggovernment.org/transportation/federal-highway-funding
2. Internet. One of the OWTs is that the government invented the internet. Not really. Xerox. Of course.
http://online.wsj.com/news/articles/SB10000872396390444464304577539063008406518
3. GI Bill was good, but it was money granted to GI's and used in a private enterprise, the purchase of a college education. As the government decided this was a great idea and got more and more involved in the education system costs exploded to the point where we now have a student loan bubble, thanks to the government.
http://www.usnews.com/opinion/blogs...overnment-shouldnt-subsidize-higher-education
4. Ahh yes, critical health research. Like the study on why chimps throw their poop? Or the $5 million spent on the website Sexpulse? Or maybe you meant that critical study costing over $1million on how playing World of Warcraft might help seniors? I'm sure that was well spent. No- you must mean the study on the benefits of watching reruns on TV.

It boggles the mind how ill informed you are.
 
"Of the total 2012 federal spending, firms received federal contracts to perform $27.3 billion worth of work in Maryland, making Maryland the fourth largest recipient of federal procurement dollars. The largest federal contractor, Bethesda-based Lockheed Martin Corp., which was awarded contracts valued at $1.8 billion in Maryland and a total of $36 billion nationwide, employs about 5,000 people in Montgomery County alone."

"Given its proximity to Washington, DC and the many federal institutions within
Maryland, the federal government contributes substantially to the State’s economy. In federal fiscal year (FFY) 2007, the federal government expended $70.6 billion in Maryland, or $12,569 as measured on a per capita basis. This amount was about 50% greater than the national per capital average of $8,339, ranking Maryland third highest overall after Virginia and Alaska. The
substantial influence of the federal government on the State is the focus of this analysis – changes in federal government expenditures will likely have a disproportionate influence on the State’s economy and can cause changes in the economy that are unexpected given prevailing economic conditions."

Interesting reading on the amount of money being sucked up by the DC area from the "fly over country".

http://dls.state.md.us/data/polanas...f-Federal-Government-on-Marylands-Economy.pdf
 
Last edited:
Back
Top