HerkPerfMan
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Posts posted by HerkPerfMan
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1 hour ago, tac airlifter said:
So let’s all be mature and realize there is goodness here if we are smart enough to filter appropriately. And if hearing a different perspective challenges your own conclusions, that is healthy as well.
The larger lesson here is worth reiterating:
Seeking information and listening to perspectives counter to your own experience are worthwhile and healthy no matter where you stand. And it helps sharpen your BS detector.
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On 12/14/2023 at 3:20 PM, StoleIt said:
F-22's doing CAS?
Ron Swanson as President?!
What's next? Cats and dogs living together?
Don't you remember the F/A-22?!
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15 hours ago, WheelsOff said:
Huh.
Apologize for my ignorance, but why the F was she ever allowed to fly an AF plane during airshow demos? Or did this particular tail not belong to us at the time?
USAF used to loan aircraft to Lockheed Martin crews to fly C-130J demos. I think Ramstein tails were used for Paris and/or Farnsborough air shows.
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The Royal Air Force has officially retired its C-130 fleet after 56 years of operation. The final C-130Js (Mk 4 and 5) were retired 30 June 2023. No 47 Squadron completed a farewell flypast over the entire country, including the Mach Loop. Interestingly, they could not return to RAF Brize Norton as planned...because the runway was melting from the extreme high temperatures.
One of RAF C-130Js was sold to the US Navy and converted to the new Fat Albert for the Blue Angels.
Best collection of photos and videos from the flypast here: https://www.thedrive.com/the-war-zone/britain-bids-farewell-to-c-130-hercules-with-spectacular-flypast
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21 hours ago, skibum said:
Love the mini bike. I think this is actually the same location.
Yes it is. And don't forget the ATVs...
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No video (yet) but still some badass visuals from Wyoming highways.
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Some perspective from flight test and performance engineering on the C-130J and C-5. Both include reaction time in the decision speed (VREF) and VCEF numbers, based on flight test. So a malfunction (typically assumed to be a critical engine failure) can occur up to VREF or VCEF. Other multi-engine aircraft handle this differently.
However, flight test reaction times can be misleading since the pilot knows that a critical engine failure will occur during the takeoff run - just not when.
Another key assumption in VREF is a 3-point ground attitude. If the aircraft is rotated, then the refusal distance is invalid since the time (and distance) to lower the nose is not included.
Regarding C-130J Block 8 and carbon brakes, the only change in charted performance is maximum brake energy and cooling times. This is the primary performance benefit of carbon brakes since the flight tests showed minimal change in stopping distance.
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6 hours ago, Dapper Dan Man said:
Thread revival:
Youngstown ARS fragged to convert to C-130Js, pending environmental impact study. Final decision sometime in Summer 2023.
https://www.airforcetimes.com/news/your-air-force/2022/12/23/ohio-reserve-base-tapped-as-likely-new-home-of-c-130j-cargo-planes/
Sent from my iPhone using TapatalkI wonder if the Js would be modified for the aerial spray mission.
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6 hours ago, GrndPndr said:
Sorry, couldn't resist. Here's a complimentary gaff from our VP. Wait, is it a Republic or Peoples Republic?
Actually, it's Democratic People's Republic of Korea (DPRK). You can't be one-party, Stalinist dictatorship with a name like that, right?
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1 hour ago, McJay Pilot said:
Disembarking troops from the crew entrance door would take FOR-EV-ER. Plus, if the beach is wide enough to taxi onto, regular MC-130’s can land on it.
I'm all for a "flying boat" C-130, but it can already hit the beach...
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8 Hercs embargoed at the LM Marietta plant. Built for Libya back in 80s and never delivered. 0 hours, but may need new tires.
Not sure of the story on the P-3 and or the L-1011...
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13 hours ago, Clark Griswold said:
More practical than a float 130 methinks...
You read my mind. The US-2 essentially IS an amphibious C-130, with a little lower max weight and payload. Even has the same engines and props as the C-130J.
If the goal is a small fleet for SOF, buying and supporting a few US-2's would seem to be an expeditious option. Similar to the other SOF-unique transport airframes like the C-145 and C-146.
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I can provide some insight on the J carbon brake and AMAX data as I have been involved with both. I can also provide POCs at Lockheed for the test pilot roadshow if you want to PM me.
RE: Carbon brakes. USAF completed their own testing without LM involvement, and their goals did not include assessing stopping performance differences. They were only looking at form/fit/function and mx perspective. Testing was on an E model and USAF cleared the carbon brake mod on all models. On the J, they discovered that cold brakes couldn't hold against TO power. Oops. I think a workaround has been created for that. A few other J operators completed their own testing, so I'm not sure if LM has sufficient data to update all TOLD. The primary benefit is extra brake energy capacity which would eliminate many of the brake energy limitations if implemented in in the performance manual.
RE: AMAX climbout data. LM does have this data. I have been pushing to add it to our C-130J preTOLD app as a low-cost option and major benefit for operators. Unfortunately can't get into the details of those discussions, but I'm still pushing. LM owns all J aircraft data since it was originally a commercial development effort.
RE: BUFF re-engining. Not involved with this, but my experience with engine upgrades (C-130J, C-5M, NP2000 props) tells me that more thrust should only be considered if current performance is thrust-limited over a large part of the envelope. More thrust drives a lot of other major changes - pylon structure, directional controls, stability margins, VMCs, etc. - and blows up the project scope. Primary benefits are fuel efficiency, digital controls, mx reduction, better access to parts/spares, etc.
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Lockheed is unloading more than just pre-owned F-16's...
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13 hours ago, dream big said:
1. We mostly use it for pre flight planning, making sure we won’t have any issues landing or taking off from a runway, looking at 3 engine out issues and break energy.
2. If the TOLD app could include the required mitigations necessary from the 1-1 that would be absolutely awesome.
Overall, right now it has been a tremendous app for planning so thanks!!
Thank you! Happy to hear the app is streamlining preflight planning.
1. Is the Quick Turn Brake Energy tool useful for analyzing brake energy? Or do you mainly use the landing brake energy calculations on the Landing tab?
2. There are 3 mitigations currently included: VROT correction for VMCA, PLT Landing Weight Limits for 0% and 50% flaps, and Max Effort Landing Weight Limit. The next release will include the gust factor correction to the PLT Landing Weight limits, so that should cover all the current mitigations.
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Thread bump, since the C-130J preTOLD app has been operational with several squadrons for more than 6 months. We're working on the next version, which will include Block 8.1 data and some other major updates. We want to make sure the app stays relevant and continues to address the daily needs of flight crews.
To current users at Little Rock, Dyess, Ramstein, and Yokota:
- What features do you use the most, and how could they be improved?
- What problems to you still encounter in TOLD planning?
- Any other feedback on strengths, weaknesses, and use cases is sincerely appreciated.
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21 hours ago, ThreeHoler said:
I’ve been out of the airplane a few years for staff but when I left we were still using a crappy Excel “ETOLD” program that had some limitations. It definitely doesn’t work in all situations, is on a Windows laptop, and is not intuitive/easy to use. The good news is there is an FE to make it work or do it manually.Most likely a home-cooked Excel solution from a Flight Engineer. I'm sure they would rather have an iPad solution. There are Software Maintenance Groups at Warner-Robins and Hill that have been trying to build iPad flight planning apps organically. They have big plans but I'm not sure they have delivered anything usable yet. Maybe KC-10 is on their list?
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7 hours ago, ThreeHoler said:
Congrats! Can you make a good KC-10 one?
It's certainly possible. We just need a copy of the latest tech pubs (-1-1)...and a paying customer.
Do you use a KC-10 ETOLD app now? If so, which platform(s) (iOS, Android, Windows, etc.), who made it, and why is it inadequate?
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Thread bump.
We finally broke through at AMC and our C-130J preTOLD app has been approved on the latest MAF EFB Baseline (v6.4). This means that the iOS app is approved for use on iPad EFBs and available through the USAF App Store.
For now, app licenses can be purchased at the OG, Wing, or Squadron level and HQ AMC will deploy the app via Blackberry UEM. We cannot sell licenses to individuals - they must be purchased by an operator organization (OG, Wing, Squadron, etc.). Please send me a PM with any questions or visit our website to start the ordering process.
Thanks for all the feedback on the app - we released v2.4.4 last month and are working to incorporate Block 8.1 configuration now.
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VB-21 Presidential Bomber. Um...what?
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2 hours ago, tk1313 said:
As an aerospace engineer, it seems there are a lot worse things to be working on than a supersonic trainer for future fighter pilots.
Working on a new-design supersonic jet? Hell yes. That's a very rare occurrence these days. But the engineers don't make the decisions anymore.
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On 1/27/2017 at 3:41 PM, Blue said:
There is a lot going on in DC. I like most of what I hear. However, how do I keep score?
Track Trump. The First 100 Days. This is about as concise as it gets, with daily updates.
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1 hour ago, 08Dawg said:
Nope, it's all manual. That's one of the hangups with any potential plan to reengine the jet. If we go from eight to four, the rudder might not have enough control authority to counter a failed outboard, and adding a power assist is financially prohibitive.
The C-130J has another solution, since the rudder size/effectiveness didn't increase from the H model. It's called Automatic Thrust Control System (ATCS) which automatically reduces power to about 50% on the opposing outboard engine and ramps it back up steadily until a "minimum power restoration speed" based on full power VMCA. I assume a B-52 re-engine would involve computer controls (FADEC) and Power Levers, so this could be done with software, using the J as a precedent. Then again, jets take longer to spool down, so it may not work as well as turboprops.
It's only software...how much could it cost? /sarcasm
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I chuckled while reading this flashback to Andrew Jackson's inauguration in 1829 and the rager that followed at the White House. They draw some parallels to our current times, but my takeaway was simpler: Despite the feeling of uniqueness to our current times, there is little that is truly new. And party guests always follow the booze...always.
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Fighter TOLD/W&B
in General Discussion
Posted
The process of making TOLD planning data (or any scheduled performance data) is an exercise in approximating and building safety margins. You gather field performance data, curve-fit it, model it, then compute scheduled performance for the -1-1. Trying to dial in to 1 knot is "polishing a turd" as they say. What matters is standardization - everyone should get the same output with the same inputs.