Marine Corps F-35B Finishing Sea Trials

WASP F-35USS WASP — The Marine Corps and Navy are close to wrapping up 19 days of Sea Trials for the Corps’ F-35B short take-off-and-vertical-landing, or STOVL, variant of the F-35 Joint Strike Fighter aircraft, service officials said.

The trails, taking place aboard the USS WASP Amphibious Assault Ship about 30-miles off the coast of Maryland, are designed to assess the F-35B’s ability to take-off and land vertically at night, maneuver and operate in high crosswinds and headwinds, among other things.

“There’s no better way to determine how an aircraft is going to operate in the fleet than to take it to sea,” said Navy Capt. Erik Etz, director of test and evaluation, F-35 Naval variants. “We’ve been pushing the aircraft out to the edges of its operational envelope.”

The Marine Corps F-35B variant, slated to reach what’s called initial operating capability by 2015, is a stealth aircraft specially engineered to land vertically, meaning without a runway.

This ability to land vertically without a runway is designed to give the Navy and Marine Corps the ability to use the aircraft from a smaller amphibious platform such as the USS WASP – without needing the catapult or large runway of an aircraft carrier, Etz added.

The ongoing Sea Trials have resulted in at least 90 successful short take-offs and 92 vertical landings aboard the USS Wasp, said Joe DellaVedova, spokesman for the Joint Strike Fighter’s Joint Program Office.

The JSF program developmental strategy is, in part, grounded upon a series of incremental software “drops” — each one adding new capability to the platform. In total, there are more than 10 billion individual lines of code for the system, broken down into increments and “blocks,” F-35 program office officials explained.
The F-35B is currently testing with Block 2B, which enables the aircraft to provide basic close air support and fire an AMRAAM [Advanced Medium Range Air to Air Missile], JDAM [Joint Direct Attack Munition] or GBU 12 [laser-guided aerial bomb].

In addition, the aircraft has conducted test flights with a full internal weapons load, including a GBU or Guided Bomb Unit and an Advanced Medium Range Air to Air Missile, or AMRAAM.

As what’s called a fifth-generation stealth or low-observable fighter platform, the F-35 is engineered with a suite of next-generation technologies designed to provide the pilots with more capability and more information.

When it comes to STOVL landing technology, the F-35B is a generation beyond its Harrier Jet predecessor, also a Marine Corps plane designed for vertical landing.

“Harriers are all manual controls. With the F-35 we have computers. A ton of engineering goes into making it a low work load. The plane is literally sampling winds, sampling conditions and the parameters,” said Marine Corps Capt. Michael Kingen, an F-35 developmental test pilot.

The F-35 is also engineered to accomplish what’s referred to as “sensor fusion,” namely the technological ability to fuse relevant information from a variety of sources into one common operating picture for the pilot to view – such as digital maps, radar information and sensor information all combined into a single set of screens, said Marine Corps Lt. Col. Matthew Kelly, former F-35 test pilot.

For instance, the F-35’s Electro-Optical Target System, or EOTS, is an infra-red sensor able to assist pilots with air and ground targeting at increased standoff ranges while also performing laser designation, laser range-finding and other tasks.

In addition, the plane’s Distributed Aperture System, or DAS, is a series of six electro-optical sensors also able to give information to the pilot. The DAS includes precision tracking, fire control capabilities and the ability to warn the pilot of an approaching threat or missile.

“The ability of the aircraft to take in all that information, process it and then provide it to the pilot with the right information when he wants it in the right format – is really what makes this the fifth generation design for the next war and the war after that,” said Kelly.

The next Sea Trials for the F-35B are slated for sometime in 2016, DellaVedova said.

“F-35 is a growth platform and will remain so for the forseeable future,” he said.

About the Author

Kris Osborn
Kris Osborn is the managing editor of Scout Warrior.
  • Harry Canyon

    ” there are more than 10 billion individual lines of code for the system”
    That gives you a warm and fuzzy doesn’t it? Microsoft 8?

  • Yaron

    “The Marine Corps F-35B variant, slated to reach what’s called initial operating capability by 2015”

    “The next Sea Trials for the F-35B are slated for sometime in 2016, DellaVedova said.”

    Could someone reconcile those two for me please? Does initial operating capability mean it will only operate from land bases? otherwise how can it reach said milestone before the next set of Sea Trials

    #correction – Also, 2nd paragraph “The trails, ” -> “The trials, ” ?

    • blight_

      I guess it means they intend to operate JSF-B from land bases for a while before embarking them?

    • wpnexp

      IOC is a limited capability. It will still be significant, especially compared to gen 4 fighters, but it is not the full capability. Planes evolve over time and new capabilites are added. That does not mean you have to wait for the last cpapbility to be completed before you can fight the plane. If the plane can be useful in combat, what is the point of waiting until it has every last capability built in. Just look at the F-16. What would have happened if someone said we can’t fight the plane until all F-16s are of the Block 50 standard? We would have had to wait another 20 years before the plane would have gotten into AF hands, and we would have used obsolete plane in the mean time.

  • dave

    The fuck is a growth platform? Does it work is all that matters.

    • Rest Pal

      It doesn’t work. Does it matter?

  • SJE

    The F35 has been a growth platform for Def Contractors bottom line

  • hibeam

    What a piece of junk. Hey dad, I want to buy a sports car. Ok son, but make sure it’s also a pickup truck.

  • Steve B.

    90 take-off-s, 92 landings….

    Somebody needs to re-take the math class….

    • Dave
    • Dumbgard B
    • Dumbgard B
    • Dumgard B
      • CharleyA

        Nope, “90 successful short take-offs and 92 vertical landings.” But I’d bet that the F-35Bs flew out to the boat, which accounts for the 2 extra landing.

    • Dopplerdave

      They had to land the two aircraft on deck first. I would suspect that the numbers aren’t final, and were reflective of the takeoffs and landings on the ship to that point.

    • Rest Pal

      It’s possible that one aircraft broke into two pieces mid-air – the tail landed first, the main section landed 0.8 second later, and the pilot (ejected after disintegration) landed 22 seconds after that – one take-off, three landings. Hence 90-92.

      • LHS3

        Here’s how it went…

        Two planes flew over from nearby PAC AFB in Maryland and landed on the ship. Each aircraft did a combined number of 90 takeoffs and 90 landings. If they leave to go back to PAC AFB two more takeoffs will be added to their overall number to secure your total 92 takeoffs.

        BTW STOVL (Short Takeoff Vertical Landing) aircraft is the vertical landing mode on F35 vs. CTOL (Conventional Takeoff & Landing) which is strictly designed as the name implies for conventional landing only.

  • KahNManN

    90 successful short take-offs and 92 vertical landings

    Probably some long takeoffs with vertical landings and vice versa… they don’t have to match.

  • BlackOwl18E

    Somehow, the fact that they did sea trials with no fully functional combat systems seems more like a publicity stunt. Once/ if they get all the systems working they may need to do the trails again.

  • Rob C.

    Least their moving on with trials and the new bird will get into production. Its worthy successor to the Harrier II, but i don’t think it can replace the Hornet or more importantly the A-10. Its not that great of bird, but it certainlly able do what Harrier II could and better. Just got hope those computers hold up without crashing (hopefully not literally).

    • Laurin

      You are right, the A-10 could tear up a lot of ass!

    • Rest Pal

      where did you get this idea that the F-35 is a “worthy successor to the Harrier II”???

  • Big-Dean

    “software drops”???

    it’s the year 2018 and two F-35 are facing a pair of SU-35 headone
    Lead to wingman “Tom I can’t target lead boggie for some reason, my radar is saying
    ita a rain cloud”
    Wingman to lead “Bob, you must be on version, I’ve got the latest service pack from Lockhead and my radar is saying it’s a 777 airliner….”
    Lead to wingman “Damn, we should’ve stayed on F-35 XP.”

    • Rest Pal

      or …

      Lead to wingman: “Damn, we should’ve bought the Chinese J-31. It’s 3 times cheaper, 2 times faster, 4 times more maneuverable, and …” (BOOM – the F-35 exploded mid-air)


    Software is what makes the F-35 easy to fly as the pilot doesn’t need to do anything to perform a vertical landing except to tell where and when; but one has to wonder why the software hasn’t mature since they did the Battle of the X-planes.