Search found 256 matches

by jarheadk5
Fri Oct 20, 2017 2:13 am
Forum: Military Aviation & Space Flight
Topic: US Marine Corp helicopter CH53E that was crash-landed a few days ago in Okinawa confrimed to carry radioactive substance
Replies: 8
Views: 2562

Re: US Marine Corp helicopter CH53E that was crash-landed a few days ago in Okinawa confrimed to carry radioactive subst

Triggered by underpressure, which exposes the Strontium-90 to the IBIS detector in the fuselage below the root end of the MRBs. A "popped" indicator must be manually reset. IIRC, an IBIS BIM indication in-flight was a "Land as soon as possible" item; if the BIM would reset and ho...

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by jarheadk5
Thu Oct 19, 2017 3:08 pm
Forum: Military Aviation & Space Flight
Topic: US Marine Corp helicopter CH53E that was crash-landed a few days ago in Okinawa confrimed to carry radioactive substance
Replies: 8
Views: 2562

Re: US Marine Corp helicopter CH53E that was crash-landed a few days ago in Okinawa confrimed to carry radioactive subst

Integrity only. IIRC, the pressure was in the neighborhood of 8psi N2, and a special servicing kit is used to ensure the blades can't be over-pressurized. Since the pressure is so low, the BIM indicator is quite sensitive, and it's possible to get nuisance BIM indications with rapid weather changes....

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by jarheadk5
Thu Oct 19, 2017 2:48 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production, Testing And Delivery
Replies: 1690
Views: 163240

Re: KC-46 Production, Testing And Delivery

AIUI, the theory behind maintaining FAA certification on a commercial-derivative military aircraft is cost savings . Engineering work is expensive, so staying as close as possible to an already-certificated design minimizes the amount of clean-sheet engineering to be done, and should save money. As ...

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by jarheadk5
Thu Oct 19, 2017 2:22 pm
Forum: Military Aviation & Space Flight
Topic: US Marine Corp helicopter CH53E that was crash-landed a few days ago in Okinawa confrimed to carry radioactive substance
Replies: 8
Views: 2562

Re: US Marine Corp helicopter CH53E that was crash-landed a few days ago in Okinawa confrimed to carry radioactive subst

http://www.navair.navy.mil/index.cfm?fuseaction=home.download&key=AD8FFC4F-C0CD-4B7A-BD4D-40CE61273AA9 Radiation source mechanically exposed on pressure loss in the blade. How old is that system? Late '50s-early '60s design - it's the same basic design on all of Sikorsky's metal-spar MRBs from ...

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by jarheadk5
Thu Oct 12, 2017 11:17 pm
Forum: Technical/Operations
Topic: Cabin noise comparision A330 / B787 / B777
Replies: 52
Views: 11752

Re: Cabin noise comparision A330 / B787 / B777

I've got multiple trips "at the back of the bus" (Economy) in all 3 of these airframes. My opinion, in order from quietest to loudest: 787, 777, A330. My experience with the A330 is pretty much the opposite of what's posted here - my flight in a Lufthansa A330 was uncomfortably loud. I wil...

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by jarheadk5
Fri Oct 06, 2017 7:21 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production, Testing And Delivery
Replies: 1690
Views: 163240

Re: KC-46 Production, Testing And Delivery

It happens, even with the B-2, as I noted upthread. A single occurrence isn't worthy of an asschewing if there were mitigating circumstances such as weather, unstable receiver, etc. A trend of the same BO doing it is another matter... but still should be handled more professionally than yelling. I o...

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by jarheadk5
Fri Oct 06, 2017 4:39 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production, Testing And Delivery
Replies: 1690
Views: 163240

Re: KC-46 Production, Testing And Delivery

Or perhaps it's the lack of experience of the USAF boom operators with the new KC-46A vision systems (camera's), because the current generation of USAF boomoperators is only used to "eyeball one' boom operation. Other airforces with KDC-10, KC-767A and A330MRTT aircraft have gained already yea...

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by jarheadk5
Fri Sep 22, 2017 11:29 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production, Testing And Delivery
Replies: 1690
Views: 163240

Re: KC-46 Production, Testing And Delivery

Boom strikes outside the receptacle have to be reported to B-2, F-22, and F-35 pilots (and F-117s, when the fleet was still active), so they can notify their maintenance folks. Shortly before I retired, there was a trend of boom strikes on multiple B-2s that cost ACC over $1mil to repair, so a speci...

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by jarheadk5
Fri Sep 08, 2017 10:37 pm
Forum: Technical/Operations
Topic: Airport Weighing Scales for Airliners
Replies: 45
Views: 4485

Re: Airport Weighing Scales for Airliners

Its a bit archaic that each of the landing gear legs are not capable of reporting back the load its under. Every one of them consist of oleo struts. Measuring the pressure* of the N2 within the strut, and knowing the contact area of the face would quickly tell you the load on the strut. Essentially...

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by jarheadk5
Sun Sep 03, 2017 8:43 pm
Forum: Technical/Operations
Topic: Airport Weighing Scales for Airliners
Replies: 45
Views: 4485

Re: Airport Weighing Scales for Airliners

The Bagram crash, the 747 could still have recovered if the MRAP hadn't impacted the horizontal stabilizer as it did. :( Highly, highly doubt that. Not right after takeoff, barely above V2, with a 20k+ lb. MRAP on the loose in the aft end of the cargo compartment. That's assuming the other 4 MRAPs ...

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by jarheadk5
Sun Sep 03, 2017 8:26 pm
Forum: Technical/Operations
Topic: How are mechanical evolutons noted within an aircraft run?
Replies: 4
Views: 1022

Re: How are mechanical evolutons noted within an aircraft run?

Logs & records entries. In the case of the S-92 helicopters that I'm currently working on, production improvements usually are made available to the fleet via SSI (Sikorsky Service Instruction). When an operator complies with an SSI, a log entry is made reflecting that, and a future buyer would ...

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by jarheadk5
Sat Sep 02, 2017 11:56 pm
Forum: Military Aviation & Space Flight
Topic: USAF AMC Aircraft Pilot Abilities Question
Replies: 17
Views: 1909

Re: USAF AMC Aircraft Pilot Abilities Question

C-17 crews from strictly Reserve/ANG units won't be airdrop qualified. A significant number of AD C-17 crews are airland-only, yet they're still considered current & qualified. The point remains: There's not a separate training, proficiency, and currency standard for USAF aircrew members based ...

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by jarheadk5
Fri Sep 01, 2017 7:14 pm
Forum: Military Aviation & Space Flight
Topic: USAF AMC Aircraft Pilot Abilities Question
Replies: 17
Views: 1909

Re: USAF AMC Aircraft Pilot Abilities Question

Double-tap; disregard.

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by jarheadk5
Fri Sep 01, 2017 7:04 pm
Forum: Military Aviation & Space Flight
Topic: USAF AMC Aircraft Pilot Abilities Question
Replies: 17
Views: 1909

Re: USAF AMC Aircraft Pilot Abilities Question

Former USAF Reserve KC-10 crewmember (boom operator) AND former USMC Active duty and Reserve CH-53E aerial observer/aerial gunner here. All KC-10 and CH-53E crewmembers have the same training, proficiency, and currency requirements, whether they're Active Duty or Reserve. From online and in-person c...

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by jarheadk5
Sat Aug 26, 2017 11:43 pm
Forum: Military Aviation & Space Flight
Topic: US military use of civilian airports in Europe?
Replies: 11
Views: 2263

Re: US military use of civilian airports in Europe?

Don't forget Ramstein. The ICAO code is ETAR. This Airbase is also used (or was) used as the main charter flights to and from Iraq and Afghanistan. It was also used as the main hub for transporting fallen US troops from Iraq and Afghanistan. The flights were operating to and from Dover AFB. Ramstei...

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by jarheadk5
Sat Aug 26, 2017 11:17 pm
Forum: Military Aviation & Space Flight
Topic: Allergy Meds for USAF Pilots suffering from Seasonal Allergies?
Replies: 1
Views: 902

Re: Allergy Meds for USAF Pilots suffering from Seasonal Allergies?

Not a pilot, but USAF enlisted aircrew (same rules for meds) from 2006-2016. I don't recall which specific allergy meds were approved, but any USAF crewmember has to see a flight surgeon before starting any meds, whether prescription or OTC. There's probably a list in one of the AFIs (Air Force Inst...

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by jarheadk5
Fri Aug 25, 2017 9:00 pm
Forum: Technical/Operations
Topic: Why can't planes fly faster?
Replies: 19
Views: 4286

Re: Why can't planes fly faster?

Speed costs money. Whether it's operational costs like fuel and maintenance, or design & engineering costs that drive the per-airframe cost up, speed costs money. I would imagine that the airlines have done the math repeatedly, and determined that the current speed range is acceptable for their ...

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by jarheadk5
Fri Aug 18, 2017 12:06 am
Forum: Technical/Operations
Topic: Automated cockpit voice - male or female
Replies: 8
Views: 1764

Re: Automated cockpit voice - male or female

When GPWS was first installed in the CH-53E in the mid/late '90s, it had a female voice (I have no idea whether that has changed or not since late '03); I don't recall any of the callouts being more urgent-sounding than others. The BANK ANGLE callout seemed to have a bit more "attitude" or...

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by jarheadk5
Tue Aug 08, 2017 1:54 am
Forum: Military Aviation & Space Flight
Topic: Report: USAF to buy Transaero NTU 747-8s for Air Force One
Replies: 226
Views: 31732

Re: Report: USAF to buy Transaero NTU 747-8s for Air Force One

I don't think they ever used the AAR capability on the VC-25s, either. If I had to guess it's probably never even flown a mission with POTUS gassed up more than 2/3 of capacity, and has never refuel in flight (except for testing/pilot proficiency.) I was told by an E-4 pilot on boom interphone, lat...

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by jarheadk5
Thu Jul 27, 2017 6:28 pm
Forum: Technical/Operations
Topic: Engine Stands - large commercial turbofans
Replies: 3
Views: 759

Re: Engine Stands - large commercial turbofans

I've never seen or heard of any regulatory requirements for engine stands. That doesn't mean they don't exist... it just means that in 15+ years of .civ helicopter maintenance I haven't seen or heard of any regulatory requirements for engine stands. I could see OSHA regulations being applicable if t...

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by jarheadk5
Sun Jul 16, 2017 1:45 am
Forum: Military Aviation & Space Flight
Topic: Presidential Transport
Replies: 41
Views: 4775

Re: Presidential Transport

would the helicopter not be able to fit in a 747? Helicopter s . At least 2, sometimes more. No, the VH-60 and VH-3 will not fit in a 747. Nor will the VH-92, when it takes over for the -60s and -3s. An S-76 requires significant disassembly to fit in a 747 (and still won't go through the nose IIRC)...

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by jarheadk5
Sat Jul 15, 2017 2:06 am
Forum: Technical/Operations
Topic: Test flights before aircraft delivery to customer
Replies: 16
Views: 4168

Re: Test flights before aircraft delivery to customer

I used to work at Sikorsky in Coatesville, PA. For the S-76D and S-92 helicopters: The first 5 flight hours are flown by Sikorsky production test pilots, with the aircraft in the baseline "green" configuration. All aircraft systems are tested, rotor track & balance is done, and operati...

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by jarheadk5
Fri Jul 14, 2017 11:58 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production, Testing And Delivery
Replies: 1690
Views: 163240

Re: KC-46 Production, Testing And Delivery

I read somewhere that the big issue with doing probe / drogue on the KC10 was that once the a/c was fitted that was the only thing it could do as the boom was rendered inop, so in effect a speciality mission just for the Navy or Marines...based on military spending criteria, would it have been bett...

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by jarheadk5
Thu May 25, 2017 11:29 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production, Testing And Delivery
Replies: 1690
Views: 163240

Re: KC-46 Production, Testing And Delivery

Refueling 2 V-22 Osprey concurrently is a real game changer. I think there would be a clearance issue with two V-22 refueling from the WARPS. Clearance for the V-22 to HAR from the KC-10 happened after I had left the jet, so I'm not 100% certain... but every picture or video I've seen of KC-10 - V-...

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by jarheadk5
Sun May 14, 2017 2:26 am
Forum: Technical/Operations
Topic: 747-8 Project Ozark
Replies: 14
Views: 3000

Re: 747-8 Project Ozark

Just the weight reductions, which amount to I believe some 10,000 pounds by last year compared to the first builds, which were some 5000 to 6000 pounds heavier than design spec. So the latest builds are a fair bit lighter than design spec. The A&P in me needs to know: What sort of things has Bo...

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by jarheadk5
Fri May 12, 2017 10:58 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production, Testing And Delivery
Replies: 1690
Views: 163240

Re: KC-46 Production, Testing And Delivery

If those are WARPS they look way out at the extreme ends of the wings, is there a capability or requirement to refuel 3 a/c at once - 2 Navy 1 Air Force? Not gonna happen. In the KC-10, simultaneous boom and WARP receivers are prohibited, due to inadequate receiver separation distance. Different ai...

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by jarheadk5
Sat Apr 29, 2017 10:19 pm
Forum: Technical/Operations
Topic: Air-to-air refuelling; what about wake turbulence?
Replies: 20
Views: 4100

Re: Air-to-air refuelling; what about wake turbulence?

Is it easier to refuel with boom, or drogue system? As a KC-10 boom operator, drogue AR is boring*. Flip a couple switches, push a button before each contact, and make a couple radio calls. The receiver does all the work; the tanker just holds position. KC-135 BOs on a jet with the BDA (Boom Drogue...

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by jarheadk5
Sat Apr 29, 2017 9:51 pm
Forum: Military Aviation & Space Flight
Topic: Tillerson in Europe C-40B
Replies: 17
Views: 3327

Re: Tillerson in Europe C-40B

Those two are especially challenging receivers - no lead-in lines, or any other AR markings or lights for that matter.

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by jarheadk5
Wed Apr 26, 2017 9:59 pm
Forum: Technical/Operations
Topic: Air-to-air refuelling; what about wake turbulence?
Replies: 20
Views: 4100

Re: Air-to-air refuelling; what about wake turbulence?

Conversely, I've heard the C-5 generates a bow wake. Can that be felt by, or affect, the tanker? Former KC-10 boom operator here. All the large receivers (KC-10, C-17, C-5, E-4/VC-25 to a greater extent; E-3, E-6, E-8, x C-135, C-32 to a lesser extent), generate a "bow wave". That's the t...

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by jarheadk5
Wed Apr 26, 2017 9:12 pm
Forum: Military Aviation & Space Flight
Topic: Tillerson in Europe C-40B
Replies: 17
Views: 3327

Re: Tillerson in Europe C-40B

Wouldn't the C-40B have to refuel in flight between ADW and Italy? I don't believe the C-40B is inflight refueling capable, is it? Not sure I'd want to refuel it with the Secretary of State on board, except in an emergency. As of mid-2015, when I was last qualified in the KC-10 as a boom operator, ...

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by jarheadk5
Thu Mar 30, 2017 1:00 am
Forum: Technical/Operations
Topic: B747F at FL450?!
Replies: 28
Views: 8043

Re: B747F at FL450?!

Been to FL410/420 many times in the KC-10. Just as Starlionblue said about the A350, that last step climb is slow... but doable.

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by jarheadk5
Thu Mar 30, 2017 12:06 am
Forum: Technical/Operations
Topic: A320 landing lights question
Replies: 7
Views: 3970

Re: A320 landing lights question

Didn't the MD-11 have a similar problem with noise and landing lights? They are located on the side of the forward fuselage right next to the first windows and can be extended and retracted like the ones on the A320. I'm sure they did. The KC-10 got a whole lot louder when the landing lights were t...

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by jarheadk5
Fri Mar 03, 2017 9:55 pm
Forum: Technical/Operations
Topic: 747-8 BBJ
Replies: 36
Views: 4240

Re: 747-8 BBJ

I read somewhere that the pilots prefer not to train in flight refueling with the VC-25s because if you scratch that shiny paint with the boom tip it is a massive hassle. The pilots train with the NEACP E-4s instead. The E-4s have a convenient grey and black scheme around the refueling receptacle a...

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by jarheadk5
Sat Feb 25, 2017 5:13 pm
Forum: Technical/Operations
Topic: Vinyl wrapping an aircraft
Replies: 3
Views: 1432

Re: Vinyl wrapping an aircraft

Experimental/Amateur-Built airplanes are frequently vinyl-wrapped without problems. Control surfaces can be wrapped, in the same way they can be painted; they will need to be re-balanced afterwards (same as if they were painted). All seams should be sealed, and a new W&B should be done after the...

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by jarheadk5
Tue Feb 14, 2017 7:17 pm
Forum: Technical/Operations
Topic: IDG load indication, and power network regulation
Replies: 12
Views: 2280

Re: IDG load indication, and power network regulation

About the only difference one would see is the EGT and fuel burn would be higher if the electrical load was proportionately high to the throttle setting under normal conditions. Now if you were talking of maximum thrust requirement beyond normal applications then I suppose it would not be a show st...

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by jarheadk5
Tue Feb 14, 2017 6:48 pm
Forum: Technical/Operations
Topic: How are differently placed tail rotors able to counter Angular Momentum?
Replies: 8
Views: 1477

Re: How are differently placed tail rotors able to counter Angular Momentum?

Just like props, tail rotors are configured in two basic flavors - "tractor" and "pusher" (excluding Fenestrons and NOTARs). As an example: CH-53 and UH-60; both have main rotors that spin counterclockwise. The -53 has the tail rotor on the left side of the vertical stab in a pus...

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by jarheadk5
Sun Feb 12, 2017 2:58 pm
Forum: Technical/Operations
Topic: Performing maintenance in cold weather
Replies: 5
Views: 1557

Re: Performing maintenance in cold weather

...And when there's no tents, trucks, or heaters, you work as long as you can, then try to find a place out of the wind to re-warm your hands. Repeat as required until the job is done.

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by jarheadk5
Tue Feb 07, 2017 9:21 pm
Forum: Military Aviation & Space Flight
Topic: Combat Air Patrol over Florida for POTUS vacation#1
Replies: 13
Views: 3212

Re: Combat Air Patrol over Florida for POTUS vacation#1

dfwjim1 wrote:
Very interesting...where are the F-16s and the KC-46s based?


That's a KC-10, most likely out of McGuire.
There are no KC-46s owned or operated by the USAF yet.

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by jarheadk5
Sun Feb 05, 2017 7:54 pm
Forum: Technical/Operations
Topic: Why not backup airliners data into the cloud ?
Replies: 36
Views: 3493

Re: Why not backup airliners data into the cloud ?

The bandwidth to get that data off each individual aircraft, real-time, is substantial. Multiply that by however many long-haul aircraft are airborne at any given moment (add whatever "fudge factor" you'd like), and you've got a LARGE chunk of bandwidth consumed solely by HUMS data from ai...

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by jarheadk5
Mon Jan 30, 2017 6:46 pm
Forum: Non-Aviation
Topic: Fate Of SS United States
Replies: 137
Views: 7260

Re: Fate Of SS United States

Somebody had to figure out how to run the very first steamship. The first steamship "snipes" had the benefit of living in the age of steam power, and having the designers and builders of the power plant still alive. They may even have been involved in the ship's construction. The first st...

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by jarheadk5
Mon Jan 04, 2010 6:28 am
Forum: Military Aviation & Space Flight
Topic: V-22s Arrive In Afghanistan
Replies: 63
Views: 10353

RE: V-22s Arrive In Afghanistan

Somehow, I missed this the first time through... <TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcol...

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by jarheadk5
Mon Jan 04, 2010 6:17 am
Forum: Military Aviation & Space Flight
Topic: V-22s Arrive In Afghanistan
Replies: 63
Views: 10353

RE: V-22s Arrive In Afghanistan

<TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcolor=#1E3951><tr><td><font size=2 face="ARIAL, Hel...

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by jarheadk5
Sun Dec 20, 2009 7:10 am
Forum: Technical/Operations
Topic: DC-10, MD-11 Inboard Airlerons
Replies: 4
Views: 4474

RE: DC-10, MD-11 Inboard Airlerons

<TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcolor=#1E3951><tr><td><font size=2 face="ARIAL, Hel...

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by jarheadk5
Wed Dec 16, 2009 5:29 am
Forum: Technical/Operations
Topic: Titanium Exhaust Plug Color?
Replies: 2
Views: 3097

RE: Titanium Exhaust Plug Color?

"New" titanium takes on a bluish tinge when heated to jet engine temps. It's normal.

It will gradually fade to a grayish-tan patina (at least the ones I've had first-hand experience with have done so).

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by jarheadk5
Wed Dec 16, 2009 5:24 am
Forum: Technical/Operations
Topic: DC-10, MD-11 Inboard Airlerons
Replies: 4
Views: 4474

RE: DC-10, MD-11 Inboard Airlerons

The inboard ailerons on the <acronym title="Carpatian Air Transport (Hungary)">KC</acronym>-10 (which is basically a DC-10-30CF) are "above" the wing engines, and do deflect downward into the fan exhaust stream. I don't know whether this is a design feature to improve inboard aileron control authori...

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by jarheadk5
Sat Dec 12, 2009 5:13 am
Forum: Technical/Operations
Topic: Take Off: Where Is The Danger With Tailwinds?
Replies: 35
Views: 14239

RE: Take Off: Where Is The Danger With Tailwinds?

<TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcolor=#1E3951><tr><td><font size=2 face="ARIAL, Hel...

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by jarheadk5
Sat Dec 12, 2009 5:02 am
Forum: Technical/Operations
Topic: Length Of Ground Headset Cable.
Replies: 20
Views: 4439

RE: Length Of Ground Headset Cable.

Never seen an official specification for that sort of thing, aside from the obvious things like having enough length to stay well clear of prop arcs, inlet hazard areas, etc.

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by jarheadk5
Sat Dec 12, 2009 4:30 am
Forum: Military Aviation & Space Flight
Topic: A400M First Flight Dec 11th
Replies: 103
Views: 15988

RE: A400M First Flight Dec 11th

<TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcolor=#1E3951><tr><td><font size=2 face="ARIAL, Hel...

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by jarheadk5
Wed Dec 09, 2009 6:38 am
Forum: Technical/Operations
Topic: Fuel Injection Pressure In Gas Turbine Engines
Replies: 18
Views: 14909

RE: Fuel Injection Pressure In Gas Turbine Engines

<TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcolor=#1E3951><tr><td><font size=2 face="ARIAL, Hel...

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by jarheadk5
Tue Dec 08, 2009 4:14 am
Forum: Technical/Operations
Topic: Takeoff With Packs On/Off?
Replies: 32
Views: 28585

RE: Takeoff With Packs On/Off?

In the <acronym title="Carpatian Air Transport (Hungary)">KC</acronym>-10 (which is basically a DC-10-30), the decision to takeoff with packs on/off is dependent on a lot of things, as determined by the flight engineer. I'll list several of them, in descending order: - takeoff gross weight - OAT - r...

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