User Panel
User Panel
User Panel
|
Posted: 8/21/2016 10:54:37 PM EDT
[#1]
Quoted:
So the holdback bar is there (correct me if I'm wrong) for two reasons: 1. There's really nothing holding the launch bar into the shuttle in the "forward" direction, there's only the back of the shuttle to pull the launch bar forward (if that makes sense). 2. Even if there was, when the aircraft throttled-up for launch, it would pull a vacuum on the cat cylinder and move down the deck, ad there is noting really holding the shuttle firmly in place, there's just no steam pressure behind it yet at this point so it sits there, sort of parked. Hence the holdback bar. How does it release at just the right time though? Again, I might be completely wrong on #1 and #2. Thanks. It keeps the aircraft straight on the treadmill |
|
|
|
Posted: 8/21/2016 10:55:08 PM EDT
[#2]
No, this doesn't violate OPSEC at all....
|
|
|
|
Posted: 8/21/2016 10:56:50 PM EDT
[#3]
Didn't a member go to jail for blabbing about tank tech?
|
|
|
|
Posted: 8/21/2016 10:57:19 PM EDT
[#4]
Seems like I've been told this. I believe it actually breaks at a defined tension, or uses a shear pin.
|
|
|
|
Posted: 8/21/2016 10:58:21 PM EDT
[#5]
It happens in the Danger zone
|
|
|
|
Posted: 8/21/2016 10:58:54 PM EDT
[#6]
Quote HistoryQuoted:
No, this doesn't violate OPSEC at all.... Yea, we'll lose WWIII for *sure* if someone answers this one. It's the final piece of the puzzle that the enemy needs. Are you seriously fucking kidding me? |
|
|
|
Posted: 8/21/2016 11:02:44 PM EDT
[#7]
https://www.youtube.com/watch?v=Kf1N-PyJddk
Go to 3:48. When the launch bar drops into the shuttle it's being held down by hydraulic pressure. Then they hook up the holdback bar. After that the cat goes into tension, (shuttle is pressurized), that's what "holds" the launch bar in place. When the cat pressure is released the holdback fitting breaks, the holdback bar stays and the holdback fitting "breaks", the part of the holdback fitting stays in the holdback or else falls into the sea. |
|
|
|
Posted: 8/21/2016 11:04:03 PM EDT
[#8]
There's a consumable, rated for aircraft weight that breaks and falls away.
Edit: Beat. |
|
|
|
Posted: 8/21/2016 11:06:33 PM EDT
[#9]
 |
|
|
|
Posted: 8/21/2016 11:10:25 PM EDT
[#10]
Quoted:
So the holdback bar is there (correct me if I'm wrong) for two reasons: 1. There's really nothing holding the launch bar into the shuttle in the "forward" direction, there's only the back of the shuttle to pull the launch bar forward (if that makes sense). 2. Even if there was, when the aircraft throttled-up for launch, it would pull a vacuum on the cat cylinder and move down the deck, ad there is noting really holding the shuttle firmly in place, there's just no steam pressure behind it yet at this point so it sits there, sort of parked. Hence the holdback bar. How does it release at just the right time though? Again, I might be completely wrong on #1 and #2. Thanks. 
|
|
|
|
Posted: 8/21/2016 11:26:42 PM EDT
[#11]
Quote HistoryI learned something from that vid! I didn't know they were resettable and reusable! When my uncle was telling me about his F-8 days it was a consumable part. |
|
|
|
Posted: 8/22/2016 12:52:55 AM EDT
[#12]
Quote HistoryQuoted:
It happens in the Danger zone The cat is the entrance ramp for the highway to the danger zone. |
|
|
|
Posted: 8/22/2016 1:28:28 AM EDT
[#13]
Quote HistoryQuoted:
It happens in the Danger zone This is dicussed, in detailin the novel "Flight of the Intruders." All you have to do is search and read, dumbass. GD is god, but for general info....... |
|
|
|
Posted: 8/22/2016 1:45:11 AM EDT
[#14]
Quote HistoryQuoted:
Didn't a member go to jail for blabbing about tank tech? You mean the NG tanker who posted (and tried to contact Al-Qaeda) about "weak points" in the M1 armor and was sent to prison? OP's question is not really on that level.... |
|
|
|
Posted: 8/22/2016 1:45:47 AM EDT
[#15]
Quote HistoryQuoted: This is dicussed, in detailin the novel "Flight of the Intruders." All you have to do is search and read, dumbass. GD is god, but for general info....... Quote HistoryQuoted: Quoted: It happens in the Danger zone This is dicussed, in detailin the novel "Flight of the Intruders." All you have to do is search and read, dumbass. GD is god, but for general info....... That's going a little far man—relax. This is hardly the dumbest question asked in GD, and it's pretty easy to get a layman's term explanation here since this place is crawling with vets. |
|
|
|
Posted: 8/22/2016 2:05:38 AM EDT
[#16]
Quote HistoryQuoted:
That's going a little far man—relax. This is hardly the dumbest question asked in GD, and it's pretty easy to get a layman's term explanation here since this place is crawling with vets. Quote HistoryQuoted:
Quoted:
Quoted:
It happens in the Danger zone This is dicussed, in detailin the novel "Flight of the Intruders." All you have to do is search and read, dumbass. GD is god, but for general info....... That's going a little far man—relax. This is hardly the dumbest question asked in GD, and it's pretty easy to get a layman's term explanation here since this place is crawling with vets. I'm a"vet," and I learned what I know from reading the "Intruder" novels. Rcket surgery, man. Engeneering and technology, go! |
|
|
|
Posted: 8/22/2016 2:16:56 AM EDT
[#17]
Quote HistoryQuoted: I'm a"vet," and I learned what I know from reading the "Intruder" novels. Rcket surgery, man. Engeneering and technology, go! Quote HistoryQuoted: Quoted: Quoted: Quoted: It happens in the Danger zone This is dicussed, in detailin the novel "Flight of the Intruders." All you have to do is search and read, dumbass. GD is god, but for general info....... That's going a little far man—relax. This is hardly the dumbest question asked in GD, and it's pretty easy to get a layman's term explanation here since this place is crawling with vets. I'm a"vet," and I learned what I know from reading the "Intruder" novels. Rcket surgery, man. Engeneering and technology, go! Well I'm a vet, too. I'd probably be inclined to ask this question here since I've never read said book and would have no idea the information requested would be available therein. That's why people ask questions here. |
|
|
|
Posted: 8/22/2016 2:22:41 AM EDT
[#18]
Quote HistoryQuoted:
Well I'm a vet, too. I'd probably be inclined to ask this question here since I've never read said book and would have no idea the information requested would be available therein. That's why people ask questions here. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Quoted:
It happens in the Danger zone This is dicussed, in detailin the novel "Flight of the Intruders." All you have to do is search and read, dumbass. GD is god, but for general info....... That's going a little far man—relax. This is hardly the dumbest question asked in GD, and it's pretty easy to get a layman's term explanation here since this place is crawling with vets. I'm a"vet," and I learned what I know from reading the "Intruder" novels. Rcket surgery, man. Engeneering and technology, go! Well I'm a vet, too. I'd probably be inclined to ask this question here since I've never read said book and would have no idea the information requested would be available therein. That's why people ask questions here. Where as I would be inclined to search, and show less of my ignorance, but to each their own. |
|
|
|
Posted: 8/22/2016 2:47:34 AM EDT
[#19]
Oh for fucks sake what a shit fest this thread turned into.
Thanks KA3B for the quick and simple answer. |
|
|
|
Posted: 8/22/2016 3:04:08 AM EDT
[#20]
Quote HistoryQuoted:
You mean the NG tanker who posted (and tried to contact Al-Qaeda) about "weak points" in the M1 armor and was sent to prison? OP's question is not really on that level.... Quote HistoryQuoted:
Quoted:
Didn't a member go to jail for blabbing about tank tech? You mean the NG tanker who posted (and tried to contact Al-Qaeda) about "weak points" in the M1 armor and was sent to prison? OP's question is not really on that level.... WTF? Seriously? How the hell did I miss that shit show? Link? Or did it get disappeared? |
|
|
|
Posted: 8/22/2016 3:06:23 AM EDT
[#21]
Quote HistoryQuoted: WTF? Seriously? How the hell did I miss that shit show? Link? Or did it get disappeared? Quote HistoryQuoted: Quoted: Quoted: Didn't a member go to jail for blabbing about tank tech? You mean the NG tanker who posted (and tried to contact Al-Qaeda) about "weak points" in the M1 armor and was sent to prison? OP's question is not really on that level.... WTF? Seriously? How the hell did I miss that shit show? Link? Or did it get disappeared? It's pretty old shit. "Rebel Grey" or some spelling to that effect. It was just post 9/11. Fuck that guy. *spit* |
|
|
|
Posted: 8/22/2016 3:35:44 AM EDT
[#22]
Quote HistoryNow it makes sense. But would still rather jump out of airplanes. 
|
|
|
|
Posted: 8/22/2016 3:43:54 AM EDT
[#23]
|
|
|
|
Posted: 8/22/2016 3:51:51 AM EDT
[#24]
One of the very first parts I machined as a baby machinist 30 years ago was the launch bar, as we called it. I'm guessing this is the same part.
|
|
|
|
Posted: 8/22/2016 4:03:58 AM EDT
[#25]
Hydraulics and stuff.
As hydraulic fluid exits pressure chamber 20, plunger head 43 moves relative to housing 19 and the volume within pressure chamber 20 decreases. A corresponding increase in volume in receiving chamber 47 occurs simultaneously. As housing 19 moves relative to plunger 51, collet body 33 is extended beyond collet ring 32. When collet body has moved approximately 1.1 inches relative to collet ring 32, hooks 42 are no longer locked in position and lose their grasp of collet body 33 thereby releasing the aircraft to begin its take-off run under full engine power and maximum catapult thrust. So sayeth the patent on the doohickey. |
|
|
|
Posted: 8/22/2016 4:28:19 AM EDT
[#26]
Quote HistoryQuoted:
Where as I would be inclined to search, and show less of my ignorance, but to each their own. Are you and OPSEC guy in a contest to see who can be a bigger dick? |
|
|
|
Posted: 8/22/2016 4:53:06 AM EDT
[#27]
Is it true that we're the only nation to make these things work well?
Posted Via AR15.Com Mobile |
|
|
|
Posted: 8/22/2016 7:57:10 AM EDT
[#28]
Quote HistoryQuoted:
Is it true that we're the only nation to make these things work well? Posted Via AR15.Com Mobile France |
|
|
|
Posted: 8/22/2016 7:59:20 AM EDT
[#29]
Quote HistoryQuoted:
Seems like I've been told this. I believe it actually breaks at a defined tension, or uses a shear pin. I don't know the exact details but it breaks away at a preset tension. |
|
|
|
Posted: 8/22/2016 2:51:23 PM EDT
[#30]
Quote HistoryQuoted:
Is it true that we're the only nation to make these things work well? Posted Via AR15.Com Mobile The Royal Navy did quite well until they ceded the field to the USN and Marine Nationale; and may return to it since their new carriers have provisions for later installation of cats and wires. Australia and Canada did well with British methods, British boats and US aircraft. Brazil is making a go of it with a French boat and US planes. Russia and China are trying to figure it out. India is hoping they do. |
|
|
|
Posted: 8/22/2016 3:30:04 PM EDT
[#31]
Quote HistoryQuoted:
Who are the folks on the side in shiny suits? Quote HistoryDidn't watch the video but i can assume you mean the fire party? Those are called proximity suits. so they can run through flames (not for long to be sure) to save the pilot who might be trapped. |
|
|
|
Posted: 8/22/2016 3:32:53 PM EDT
[#32]
They use magnets now on the new carriers.
So I'm going to go with magnets on a stationary treadmill. |
|
|
|
Posted: 8/22/2016 4:21:44 PM EDT
[#33]
When I was in PLAT, and wore the green shirt, they were machined for a specific breaking point for each model of aircraft.
The guys in V2 would toss the remaining broken piece over the side. Some planes needed more thrust before the cat stroke, others like the Hummer, seemed to lift off all gentle like. But that was in the late 70's
|
|
|
|
Posted: 8/22/2016 4:22:26 PM EDT
[#34]
Has somewhat of a depiction of the mechanical system. |
|
|
|
Posted: 8/22/2016 4:34:10 PM EDT
[#35]
Quote HistoryQuoted:
Yea, we'll lose WWIII for *sure* if someone answers this one. It's the final piece of the puzzle that the enemy needs. Are you seriously fucking kidding me? Quote HistoryQuoted:
Quoted:
No, this doesn't violate OPSEC at all.... Yea, we'll lose WWIII for *sure* if someone answers this one. It's the final piece of the puzzle that the enemy needs. Are you seriously fucking kidding me? any tech that helps the enemy advance their capabilities or exposes ours, should not be shared. One bit of intel may be worthless, but when you get enough of these harmless items, you get a bigger picture that could be damaging. secret is secret. You don't get to decide if it is worth being secret or not. |
|
|
|
Posted: 8/22/2016 4:53:54 PM EDT
[#36]
Somewhat off topic....If the catapult was broken, are the carriers long enough for a fighter to take off using the length of the carrier?
|
|
|
|
Posted: 8/22/2016 4:56:14 PM EDT
[#37]
|
|
|
|
Posted: 8/22/2016 4:59:04 PM EDT
[#38]
Quote HistoryQuoted:
Somewhat off topic....If the catapult was broken, are the carriers long enough for a fighter to take off using the length of the carrier? No. |
|
|
|
Posted: 8/22/2016 5:06:17 PM EDT
[#39]
Quote HistoryQuoted: any tech that helps the enemy advance their capabilities or exposes ours, should not be shared. One bit of intel may be worthless, but when you get enough of these harmless items, you get a bigger picture that could be damaging. secret is secret. You don't get to decide if it is worth being secret or not. Quote HistoryQuoted: Quoted: Quoted: No, this doesn't violate OPSEC at all.... Yea, we'll lose WWIII for *sure* if someone answers this one. It's the final piece of the puzzle that the enemy needs. Are you seriously fucking kidding me? any tech that helps the enemy advance their capabilities or exposes ours, should not be shared. One bit of intel may be worthless, but when you get enough of these harmless items, you get a bigger picture that could be damaging. secret is secret. You don't get to decide if it is worth being secret or not. Is this somehow secret info? I was assured that anyone who knows anything already read about this in flight of the intruder. |
|
|
|
Posted: 8/22/2016 5:11:32 PM EDT
[#40]
Quote HistoryQuoted:
any tech that helps the enemy advance their capabilities or exposes ours, should not be shared. One bit of intel may be worthless, but when you get enough of these harmless items, you get a bigger picture that could be damaging. secret is secret. You don't get to decide if it is worth being secret or not. Quote HistoryQuoted:
Quoted:
Quoted:
No, this doesn't violate OPSEC at all.... Yea, we'll lose WWIII for *sure* if someone answers this one. It's the final piece of the puzzle that the enemy needs. Are you seriously fucking kidding me? any tech that helps the enemy advance their capabilities or exposes ours, should not be shared. One bit of intel may be worthless, but when you get enough of these harmless items, you get a bigger picture that could be damaging. secret is secret. You don't get to decide if it is worth being secret or not. Oh good times. |
|
|
|
Posted: 8/22/2016 5:16:51 PM EDT
[#41]
Quote HistoryQuoted:
It happens in the Danger zone His ego's writing cheques |
|
|
|
Posted: 8/22/2016 5:17:19 PM EDT
[#42]
Quote HistoryQuoted:
Didn't watch the video but i can assume you mean the fire party? Those are called proximity suits. so they can run through flames (not for long to be sure) to save the pilot who might be trapped. Quote HistoryQuoted:
Didn't watch the video but i can assume you mean the fire party? Those are called proximity suits. so they can run through flames (not for long to be sure) to save the pilot who might be trapped. Kinda. Proximity fire gear is aluminized and reflective to allow you to get close enough to a fuel fire to be able to reach it with an effective fire stream. Even upwind, radiant heat can't be beat. Entry suits are much thicker with a different hood and allow you to be immersed in flame for up to a minute or so. Only application I have ever seen them is in petrochemical industry where being able to access a valve engulfed in fire would be needed (as an example). |
|
|
|
Posted: 8/22/2016 5:20:05 PM EDT
[#43]
Quote HistoryQuoted:
any tech that helps the enemy advance their capabilities or exposes ours, should not be shared. One bit of intel may be worthless, but when you get enough of these harmless items, you get a bigger picture that could be damaging. secret is secret. You don't get to decide if it is worth being secret or not. Quote HistoryQuoted:
Quoted:
Quoted:
No, this doesn't violate OPSEC at all.... Yea, we'll lose WWIII for *sure* if someone answers this one. It's the final piece of the puzzle that the enemy needs. Are you seriously fucking kidding me? any tech that helps the enemy advance their capabilities or exposes ours, should not be shared. One bit of intel may be worthless, but when you get enough of these harmless items, you get a bigger picture that could be damaging. secret is secret. You don't get to decide if it is worth being secret or not. Its not secret anymore. Hillary already gave it to the Russians and Chicoms.  
|
|
|
|
Posted: 8/22/2016 5:21:14 PM EDT
[#44]
Quote HistoryQuoted:
No. Quote HistoryQuoted:
Quoted:
Somewhat off topic....If the catapult was broken, are the carriers long enough for a fighter to take off using the length of the carrier? No. Fighters can not, but C-130s and U-2s can. |
|
|
|
Posted: 8/22/2016 5:24:59 PM EDT
[#45]
Interesting...Thanks Medic!
Quote HistoryQuoted:
Fighters can not, but C-130s and U-2s can. Quote HistoryQuoted:
Quoted:
Quoted:
Somewhat off topic....If the catapult was broken, are the carriers long enough for a fighter to take off using the length of the carrier? No. Fighters can not, but C-130s and U-2s can. |
|
|
|
Posted: 8/22/2016 5:27:37 PM EDT
[#46]
The real rush is to be between the forward cats during a launch
|
|
|
|
Posted: 8/22/2016 5:40:51 PM EDT
[#47]
Quote HistoryQuoted: Seems like I've been told this. I believe it actually breaks at a defined tension, or uses a shear pin. This, there is a pre-tension put on the shuttle prior to the actual launch. A friend of mine had a bowl of holdback pin on his coffee table for different types of aircraft he worked on, on the boat. The paint in the center section is supposed to flake off when the right tension is applied. Part of hooking the plane up is for the final checker to look for that BEFORE exiting from under the aircraft.  |
|
|
|
Posted: 8/22/2016 5:48:38 PM EDT
[#48]
Quote HistoryQuoted:
any tech that helps the enemy advance their capabilities or exposes ours, should not be shared. One bit of intel may be worthless, but when you get enough of these harmless items, you get a bigger picture that could be damaging. secret is secret. You don't get to decide if it is worth being secret or not. Quote HistoryQuoted:
Quoted:
Quoted:
No, this doesn't violate OPSEC at all.... Yea, we'll lose WWIII for *sure* if someone answers this one. It's the final piece of the puzzle that the enemy needs. Are you seriously fucking kidding me? any tech that helps the enemy advance their capabilities or exposes ours, should not be shared. One bit of intel may be worthless, but when you get enough of these harmless items, you get a bigger picture that could be damaging. secret is secret. You don't get to decide if it is worth being secret or not. If it were secret wouldn't the deck apes, I mean Cat crew need security clearance? Wouldn't the Navy prohibit crew members from keeping the broken pins as souvenirs? (I had a pin from my 100th launch as a checker shirt but it didn't make it home) |
|
|
|
Posted: 8/22/2016 6:19:22 PM EDT
[#49]
This explains why the aircraft squat before launch.
|
|
|
|
Posted: 8/22/2016 8:15:17 PM EDT
[#50]
Quote HistoryQuoted:
This, there is a pre-tension put on the shuttle prior to the actual launch. A friend of mine had a bowl of holdback pin on his coffee table for different types of aircraft he worked on, on the boat. The paint in the center section is supposed to flake off when the right tension is applied. Part of hooking the plane up is for the final checker to look for that BEFORE exiting from under the aircraft. http://www.maritime.org/doc/catapult/img/fig3-14.jpg Quote HistoryQuoted:
Quoted:
Seems like I've been told this. I believe it actually breaks at a defined tension, or uses a shear pin. This, there is a pre-tension put on the shuttle prior to the actual launch. A friend of mine had a bowl of holdback pin on his coffee table for different types of aircraft he worked on, on the boat. The paint in the center section is supposed to flake off when the right tension is applied. Part of hooking the plane up is for the final checker to look for that BEFORE exiting from under the aircraft. http://www.maritime.org/doc/catapult/img/fig3-14.jpg Holy shit man, you just gave our enemies information classified as "secret". You violated OPSEC man. Fuck what are we gonna do now?!?! 
|
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
