PPRuNe Forums - Search Results
PPRuNe Forums

Go Back  PPRuNe Forums > Search Forums
Reload this Page >

Search Results

Register
FAQ
Calendar
Wikiposts
Today's Posts
Search
Vendor Directory
 
Page 1 of 2
1
2
Search: Posts Made By: KenV
Showing results 1 to 35 of 39
Search took 0.00 seconds.
Forum: Military Aviation
14th Sep 2018, 15:19
Replies: 337
Views: 226,571
Posted By KenV

Regardless of the registry (civil, military,...

Regardless of the registry (civil, military, state, whatever) what is the reason the investigation is being done in secret and the resulting report not published? It makes no sense unless someone is...
Forum: Military Aviation
12th Sep 2018, 14:38
Replies: 337
Views: 226,571
Posted By KenV

Plausible explanations? Kind of my point, no? The...

Plausible explanations? Kind of my point, no? The point of an investigation is to positively determine cause, not "what is plausible." And the point of a report afterward is to assure all current and...
Forum: Military Aviation
12th Sep 2018, 13:28
Replies: 337
Views: 226,571
Posted By KenV

Why would the Spanish military be involved in...

Why would the Spanish military be involved in this accident at all? The Spanish military has no design or engineering authority for this aircraft. It was never signed over to them so they don't...
Forum: Military Aviation
11th Sep 2018, 16:07
Replies: 337
Views: 226,571
Posted By KenV

I get that. But it's one thing to say: "Your...

I get that. But it's one thing to say: "Your aircraft did not get the latest software load and are therefore safe to fly," and an entirely different thing to say: "Any and all new software loads we...
Forum: Military Aviation
11th Sep 2018, 15:57
Replies: 337
Views: 226,571
Posted By KenV

In the US, military transports not yet delivered...

In the US, military transports not yet delivered to the military customer (via DD250) are assigned a temporary FAA "N" registration and operated under FAA "Experimental" rules. Every KC-46 and C-17...
Forum: Military Aviation
10th Sep 2018, 17:48
Replies: 337
Views: 226,571
Posted By KenV

And absent such a report I repeat my question: ...

And absent such a report I repeat my question: "What assurance do the current and future operators of this aircraft have that the problem is fully understood and has been thoroughly designed out to...
Forum: Military Aviation
10th Sep 2018, 13:15
Replies: 337
Views: 226,571
Posted By KenV

For me, the really puzzling part of this accident...

For me, the really puzzling part of this accident is that the engines initially produced enough thrust to get safely airborne, and do so without any warning or caution indications, but then suddenly...
Forum: Military Aviation
11th Jun 2015, 19:40
Replies: 337
Views: 226,571
Posted By KenV

The turboprop I'm most familiar with did not...

The turboprop I'm most familiar with did not maintain constant torque, it maintained constant TIT. Trying to maintain constant torque at a constant prop RPM while in a climb resulted in overtemps,...
Forum: Military Aviation
11th Jun 2015, 19:28
Replies: 337
Views: 226,571
Posted By KenV

So Spitfires and Hurricanes did not have...

So Spitfires and Hurricanes did not have controllable pitch/constant speed propellers. Fascinating. I had no idea.
Forum: Military Aviation
11th Jun 2015, 14:35
Replies: 337
Views: 226,571
Posted By KenV

Wait........the Spitfire used wooden propellers? ...

Wait........the Spitfire used wooden propellers? I never knew.
Forum: Military Aviation
11th Jun 2015, 14:20
Replies: 337
Views: 226,571
Posted By KenV

I stand corrected. It's still the only pen...

I stand corrected.

It's still the only pen that works reliably in zero G.
Forum: Military Aviation
11th Jun 2015, 12:33
Replies: 337
Views: 226,571
Posted By KenV

False story. 1. NASA used pencils all...

False story.

1. NASA used pencils all through the Mercury and Gemini programs. It was not until Apollo that they used pens.

2. The "space pen" was developed commercially by the Fisher...
Forum: Military Aviation
4th Jun 2015, 12:56
Replies: 337
Views: 226,571
Posted By KenV

You are of course correct. I was not clear. The...

You are of course correct. I was not clear. The inboard tanks are larger than the outboard tanks. Fuel is fed from the inboard tanks to both engines until the fuel volume is equal in the inboard...
Forum: Military Aviation
3rd Jun 2015, 15:05
Replies: 337
Views: 226,571
Posted By KenV

Multiple sources have published Airbus stating...

Multiple sources have published Airbus stating that the problem was one of quality control in the final assembly process, and not a fault in the "design/operation" of the aircraft.
Forum: Military Aviation
1st Jun 2015, 18:16
Replies: 337
Views: 226,571
Posted By KenV

Indeed. But the 6-8 billion it took to develop...

Indeed. But the 6-8 billion it took to develop the A400 would have bought a LOT of fuel. I doubt that the program development costs could possibly be justified by the lower operating costs even if...
Forum: Military Aviation
1st Jun 2015, 18:08
Replies: 337
Views: 226,571
Posted By KenV

True. Mostly. In current USAF service. But...

True. Mostly. In current USAF service.

But during the entirety of the Iraq and Afghan wars, C-17s flew from major air depots in Europe and Turkey directly to very austere forward airfields in...
Forum: Military Aviation
1st Jun 2015, 17:55
Replies: 337
Views: 226,571
Posted By KenV

[/LIST] So you're saying the C-17 gets up...

[/LIST]
So you're saying the C-17 gets up quicker, stays up longer, penetrates deeper, and delivers a larger load?


COOOLLL!
Forum: Military Aviation
1st Jun 2015, 15:33
Replies: 337
Views: 226,571
Posted By KenV

The problem is we know nothing of the actual...

The problem is we know nothing of the actual software fault. It could be that the gitch rolled back power on the engines one at a time and then when the third engine rolled back, the software...
Forum: Military Aviation
29th May 2015, 16:09
Replies: 337
Views: 226,571
Posted By KenV

The problem was not with the data recorders. The...

The problem was not with the data recorders. The problem was with the data readers. They were incompatible with the recorders. The manufacturer (L-3 Com) was able to download all the data using...
Forum: Military Aviation
22nd May 2015, 18:49
Replies: 337
Views: 226,571
Posted By KenV

Sorry, missed the tongue-in-cheek. My bad. ...

Sorry, missed the tongue-in-cheek. My bad.

But in my defense, this is not the first time where I asked a question about an Airbus product and others assumed I was knocking Airbus. Douglas had a...
Forum: Military Aviation
22nd May 2015, 18:06
Replies: 337
Views: 226,571
Posted By KenV

Most? I can't speak for "most", but that's not...

Most? I can't speak for "most", but that's not how Douglas did things. Consistent with Douglas' conservative design approach, C-17 does not operate that way. There are four wing tanks on the C-17....
Forum: Military Aviation
22nd May 2015, 17:55
Replies: 337
Views: 226,571
Posted By KenV

There we go again. First, no, the C-17 is a...

There we go again. First, no, the C-17 is a Douglas product purchased by Boeing. And no, I neither stated nor remotely implied C-17 was "better". I said it was "different". That is a HUGE...
Forum: Military Aviation
22nd May 2015, 17:40
Replies: 337
Views: 226,571
Posted By KenV

I can't speak for the A400 and Airbus, but...

I can't speak for the A400 and Airbus, but Douglas on the C-17 used brand new production aircraft to test, evaluate, and certify all sorts of changes. For example, the very first center wing tank...
Forum: Military Aviation
22nd May 2015, 17:28
Replies: 337
Views: 226,571
Posted By KenV

Interesting. I wonder why they chose this route...

Interesting. I wonder why they chose this route to achieve 3G maneuver capability. The C-17 has 3G maneuver capability without resorting to a wing fuel transfer system. Indeed at lighter weights...
Forum: Military Aviation
22nd May 2015, 14:35
Replies: 337
Views: 226,571
Posted By KenV

In that case could the "Tactical fuel management"...

In that case could the "Tactical fuel management" system be moving the fuel outboard in each wing to reduce wing bending moment when pulling G? This would not be a "trimming" system is the usual...
Forum: Military Aviation
21st May 2015, 17:44
Replies: 337
Views: 226,571
Posted By KenV

Excellent summary. I would add the following: ...

Excellent summary. I would add the following:

3. The reason for this rumoured loss of thrust has yet to be officially identified, but the same rumor sources claim it was due to a fuel tank...
Forum: Military Aviation
21st May 2015, 15:42
Replies: 337
Views: 226,571
Posted By KenV

This system is just one more input to the...

This system is just one more input to the HMU/ECU. The HMU/ECU still controls the fuel flow, not the pilot.
Forum: Military Aviation
21st May 2015, 15:38
Replies: 337
Views: 226,571
Posted By KenV

You are of course correct. I was addressing the...

You are of course correct. I was addressing the H-60 / S-70 family specifically. I even mentioned the twist grip throttle control in my earlier post (#146)
Forum: Military Aviation
21st May 2015, 13:40
Replies: 337
Views: 226,571
Posted By KenV

There is some confusion of terms here. A...

There is some confusion of terms here.

A FADEC is exactly that: "Full Authority Digital Engine Control". Fuel to the engine is entirely metered/controlled by a digital computer. This function...
Forum: Military Aviation
21st May 2015, 13:07
Replies: 337
Views: 226,571
Posted By KenV

Really? I'm quite sure there have been LOTS of...

Really? I'm quite sure there have been LOTS of aircraft accidents that would have been totally unaffected by altitude.
Forum: Military Aviation
21st May 2015, 13:03
Replies: 337
Views: 226,571
Posted By KenV

Two points: 1. There is zero evidence that...

Two points:

1. There is zero evidence that the fuel trim software being blamed for this accident resided in the ECU. Usually, fuel system management is handled at the aircraft system level, not...
Forum: Military Aviation
20th May 2015, 14:25
Replies: 337
Views: 226,571
Posted By KenV

The cited report is massively flawed. Customers...

The cited report is massively flawed.
Customers and operators are neither qualified nor even able to "check" the software embedded in any aircraft's control systems.

No, they can't. Electronic...
Forum: Military Aviation
20th May 2015, 14:05
Replies: 337
Views: 226,571
Posted By KenV

OK, that makes sense. Thanks for the feedback. ...

OK, that makes sense. Thanks for the feedback. But from what I'm gathering from your description it sounds like they are indeed like the power levers on a multi-engine fixed wing aircraft. So the...
Forum: Military Aviation
20th May 2015, 13:42
Replies: 337
Views: 226,571
Posted By KenV

Can't speak for Airbus, but Boeing has no...

Can't speak for Airbus, but Boeing has no manual/mechanical reversion for engine control on its FADEC equipped aircraft.

Separately, may I ask what is a "power control lever" on the S-70 series...
Forum: Military Aviation
20th May 2015, 13:20
Replies: 337
Views: 226,571
Posted By KenV

Aaaah, but I DO dispute that. The software was...

Aaaah, but I DO dispute that. The software was 100% "fit" and "qualified" for flight. It just was not qualified for continuous operation more than 248 days. It was also not qualified to operate...
Showing results 1 to 35 of 39
 
Page 1 of 2
1
2


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.