Forum: F-16 Design & Construction

Yeah I like it a lot. I am still only qualified to be the assistant cooley to the assistant crew chief or something like that. ( an office symbol with a really long string of letters ). Very Happy

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Erik, I'm glad you like it too! This all started out because I had a question about one little part, but now it's turned into a great walkaround Q&A. I never realized just how this topic would take off Cool

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ELP, I'm just a civilian, so you have one up on me Wink

! The next order of business is to save up for a better digital camera!

I've included a better pic of the gear uplock hook for better ID since it was mentioned earlier (thanks for the detail Eric).

Here's the next question. Can someone tell us what the green bottle or reservoir is (green arrow)? It's in the port wheel well towards the front. Thanks again in advance Smile

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Easy one Halon bottle, the gas is used in combat to keep the fuel tank vapors from exploding if hit. Because Halon causes holes in the ozone we don't use it daily but the bottle is there.

Thanks Erik, that makes perfect sense Smile

. Here's another one (or two) that I was wondering about. They're in both wheel wells, towards the back. They look like they're used to fill something, but I could be wrong.

Those are the pressure and return filter bowls for both the A and B system hydraulics, The one on the outbrd side of both wells is the preesure filterwhich is attached to the Pressure manifold the ohter ones at the back of the wells are the return filter and the case drain filter mounted on the hydaulic return manifold. The left side has the B system, the right is the A system, the B side also has a JFS/brake hydraulic filter bowl that is in the left wheel well mounted to the aft inbrd center partion, its delta P is located on top instead of the bottom like the other filterbowls. The delta P's pop when the filters become saturated. They use a magnet to detect excessive metal particles in the fluid and filter when the saturation reaches a certain limit the magnet pops the delta P out. These are checked after every flight and the filters are now time change items in the phase inspection.

Rigo

Quote:

ELP, I'm just a civilian, so you have one up on me

Mongo ( me ) civilian too. Laughing

Delta Ps pop at the wrong dang time ALL the time. Like EOR prior to flight, during an engine run on mids etc. They never seem to come home that way. They are also on the engines too. Those are much harder to see and get to. Post some more? photos. ya gotta have some wpns questions in there somewhere.

Thanks guys! I didn't have a clue as to what those were. EriktheF-16462, yes, I do have some weapons questions, but I need to go through my pics again and prep a few more. I'm actually leaving for Vegas in about an hour (Jimmy Buffett concert Saturday night Very Happy

!) and need to go put all my stuff in my car right now, but look for some more ? pics on Sun. or Mon. Ciao!

The GE 110-100 has 5 delta p's you check on thruflt and preflt inspections, the augmentorpump filter, lube and scavenge filter, eng oil hydraulic filter and the main fuel filter and the impending fuel bypass filter. The last time I had an engine delta p pop was when I was in korea 2000-2001, that was the eng oil hydraulic filter and it took me more time to open the JFS clam shell then to change the filter. All the filters are easy to see in the jet. The augmentor filter is what you say is the hardest to see and even that can be seen through the oil sight gauge door or the oil servicing door for the engine.

Rigo

I see an engine Delta P extended about every 2 months or so, its usually from a hard landing. On the red battery mentioned earlier, the red ones are good for 12 months with out being changed, and when disconnecting one you must do several ops checks that prevent a speedy change. The blue ones are only good for 60 days, and must be checked for holding a charge and refurbishment. The Halon bottle inerts the gas to prevent the vapors in the wings from being prone to explosion. The external tanks do not get this treatment, as I think the pilots jettoson the tanks when comming under fire, and use the halon bottle, to allow for a quicker lower drag egress from the combat zone. I might be wrong on the externals getting the halon however.

Sorry about the sporadic posts, I am on vacation.

Pilots here in the office say externals as well.

EriktheF-16462 wrote:

Pilots here in the office say externals as well.

Yeah, but I have watched pilots pop the halon on the ground, thinking that it will still be in the system by the time they come under fire. That is deffinately not true when they hit a tanker prior to entering the combat zone. I'm not sure how long it takes for the halon to become ineffective, but remember that it does it's job by pushing the oxygen out of the way. Thus, the longer it is in the system, the longer it has to vent and the more O2 is being put into the system by the jet. And, if/when the jet hits a tanker, it naturally pushes all excess gases out of the system (including any Halon that might have still been there!) I've watched several pilots be be told this. Some choose to ignore it because they think they know more than the people who work/study the systems. Others are smart enough to fully accept what is said and take it to heart to only use this system when they come under fire so that it can actually help them out.

Oh, and according to a fuelshop QA guy I know, Halon doesn't go into the externals, that he knows of. My conjecture on this is that externals are the first fuel used and should therefor be used up prior to the jet entering combat, in most cases. That part is pure conjecture, though.

Straight out of the Dash-1 (while I have nothing to do on my AM SOF tour)...

"The fuel tank explosion suppression system does not protect the external fuel tanks."

Also, as far as I know, the halon has been removed and the tank is no longer serviced even though it remains on the jet. From what I remember, it has something to do w/ the environmental impact of the halon on our environment. Just heresay mind you.

Gus

Your partially correct. They're not serviced state side... always serviced in contingency operations as in Southwest Asia.

Thanks Chickenlegs! Partially correct is better than totally wrong...

BTW, it should be "You're partially correct", not "Your partially correct." Razz

Maybe we can discuss it on our next coalition AEF??? I'll buy.

Any snow in CO?? We have none...

Cheers!

Gus

Forum: F-16 Design & Construction

Please help me identify this F-16 part