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Search: Posts Made By: gums
Showing results 1 to 35 of 45
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Forum: Tech Log
4th Jul 2012, 15:52
Replies: 1,550
Views: 302,018
Posted By gums

Touch and experience and training

Thanks for the opportunity, Clan...



I pointed this out early - the jet seems to have an excellent aerodynamic design. No extreme buffet, roll oscillations ( extreme, not the ones we see on...
Forum: Tech Log
3rd Jul 2012, 01:35
Replies: 1,550
Views: 302,018
Posted By gums

@ bubbers, et al Yep, beats the hell outta...

@ bubbers, et al

Yep, beats the hell outta me. Hold what ya got and analyze the situation.

maybe the "boldface" or whatever the commercial folks call it was not a good idea - like pull to 5...
Forum: Tech Log
28th Jun 2012, 03:34
Replies: 1,550
Views: 302,018
Posted By gums

Most of the folks here have pointed out that our...

Most of the folks here have pointed out that our HUD's in the Sluf and Viper and Jaguar and Tornado and Tomcat and Eagle and Hornet and Typhoon and Harrier and, and and, and........... were there...
Forum: Tech Log
27th Jun 2012, 19:57
Replies: 1,550
Views: 302,018
Posted By gums

Use of all available performance indications

While I continue to point out all the benefits of a HUD that was operational back in 1968 or so, I agree for the most part that we have plenty of information to use when things turn sour.

The...
Forum: Tech Log
26th Jun 2012, 20:08
Replies: 1,550
Views: 302,018
Posted By gums

In defense of a HUD or other flight path indication

I can tell you what the AF447 HUD display would have looked like.

- UAS happens. No change in FPV, sucker is on the horizon line and bank angle oscillating.

- Gradual pull up reflected by FPV...
Forum: Tech Log
25th Jun 2012, 02:35
Replies: 1,550
Views: 302,018
Posted By gums

Bubbers said it. They didn't have "performance"...

Bubbers said it. They didn't have "performance" data available. They had attitude and a myriad of control law reversions and loss of several of the so-called "protections"

I am a dinosaur like...
Forum: Tech Log
23rd Jun 2012, 18:15
Replies: 1,550
Views: 302,018
Posted By gums

Good to see the discussion of the FPV, whether on...

Good to see the discussion of the FPV, whether on a HUD or on the flat panels.

My point is that the sucker shows actual flight path regardless of the air data. Surely this would have allowed the...
Forum: Tech Log
22nd Jun 2012, 14:16
Replies: 1,550
Views: 302,018
Posted By gums

@ Doze My point was that a flight path marker...

@ Doze My point was that a flight path marker based upon inertial data would have illustrated that old adage "pull back to go up, pull back further to go down". It would have shown the climb and it...
Forum: Tech Log
21st Jun 2012, 01:27
Replies: 1,550
Views: 302,018
Posted By gums

Good curve fit, 'nuts. A year or more ago I...

Good curve fit, 'nuts.

A year or more ago I raised the issue of "standby gains" to use a given value for dynamic pressure should the normal sensors go off to wonderland or the system deems the...
Forum: Tech Log
20th Jun 2012, 04:02
Replies: 1,550
Views: 302,018
Posted By gums

Some basics of the control laws

Thanks to 'nuts and Rouli for bring up one aspect of the control laws that is independent of all the "autopilot" functions.

Part of the quote mentioned by Rouli strikes home, as it was inplemented...
Forum: Tech Log
27th May 2012, 17:30
Replies: 1,550
Views: 302,018
Posted By gums

I have to note that my own experience with CB's...

I have to note that my own experience with CB's in the tropics was that they were no where near the stuff I experienced in the U.S. mid west.

Hell, we even refueled in a thunderstorm on one ferry...
Forum: Tech Log
25th May 2012, 21:01
Replies: 1,550
Views: 302,018
Posted By gums

Salute! I am gonna throw my lot in with OG. ...

Salute!

I am gonna throw my lot in with OG.

When I talk about reversion, my only experience was with that little jet.

When speed went tango uniform, the system reverted to "STBY Gains",...
Forum: Tech Log
25th May 2012, 17:51
Replies: 1,550
Views: 302,018
Posted By gums

Salute! Thank you , OG, for the observation...

Salute!

Thank you , OG, for the observation that the classical stall depiction and AoA is more applicable to general aviation planes and very old straight-wing designs.

The top of the curve for...
Forum: Tech Log
24th May 2012, 01:42
Replies: 1,550
Views: 302,018
Posted By gums

Hey, Doze! I sure hope I am not one of those...

Hey, Doze!

I sure hope I am not one of those that assert the 'bus FBW system and laws were soley designed by computer geeks with no pilot inputs.

I do question how many of the pilots had...
Forum: Tech Log
21st May 2012, 22:29
Replies: 1,550
Views: 302,018
Posted By gums

I read Bubbers, 'bird, Retired, Okie et al and I,...

I read Bubbers, 'bird, Retired, Okie et al and I, too, question the procedures.

The 'almost an AF447' thread shows what I see as a problem with the procedures, if not with the profiles the jets...
Forum: Tech Log
19th May 2012, 03:11
Replies: 1,550
Views: 302,018
Posted By gums

To auto trim or to not.....

I agree with you for the most part, Doze.

Our "autotrim" was referenced to the gee we had trimmed for. So If I pulled hard and relaxed, then the thing tried to get back to the "trim" setting I...
Forum: Tech Log
19th May 2012, 02:31
Replies: 1,550
Views: 302,018
Posted By gums

first of all... @ rouli The Viper limiters...

first of all...

@ rouli The Viper limiters were inviolable - very hard. The only way to manually control the horizontal tails was with the pitch override switch, and that thing did not work...
Forum: Tech Log
18th May 2012, 18:12
Replies: 1,550
Views: 302,018
Posted By gums

c'mon, Lyman. I was not an official test...

c'mon, Lyman.

I was not an official test pilot, but flying the first few A-37's and F-16's I had to be one, like it or not.

I am trying to predict the accident board findings, and I have the...
Forum: Tech Log
18th May 2012, 16:24
Replies: 1,550
Views: 302,018
Posted By gums

I am with Retired. Hey Lyman! Are you...

I am with Retired.

Hey Lyman! Are you postulating that the PF simply followed steering cues?

What about other indications? basic crosscheck. Granted, the speed and maybe even altitude were...
Forum: Tech Log
18th May 2012, 00:37
Replies: 1,550
Views: 302,018
Posted By gums

Thanks Infrequent and JC. You must realize...

Thanks Infrequent and JC.

You must realize that I did not turn on the VCR we had ( first jet with the "home movies" for de-brief, heh heh) until I had done a few things and then had the gear down....
Forum: Tech Log
17th May 2012, 20:51
Replies: 1,550
Views: 302,018
Posted By gums

New pages for the flight manual

O.K., I can't resist. Got the QuickTime video finally, and post it here.

This is not like the AF jet crash. Got the jet back to the ramp. No previous documented failure of the leading edge...
Forum: Tech Log
17th May 2012, 20:14
Replies: 1,550
Views: 302,018
Posted By gums

Beating the dead horse

c'mon, folks.

We know with a large probability/certainty that the jet was flown at a high attitude as the airspeed slowed and that all the "protections" did not keep the jet from exceeding the...
Forum: Tech Log
17th May 2012, 18:17
Replies: 1,550
Views: 302,018
Posted By gums

@ Doze J Fer chrissakes, Doze, the...

@ Doze

J


Fer chrissakes, Doze, the system did not limit the AoA or we wouldn't be here trying to figure out what happened.

I must admit that our primitive FBW system didn't care about...
Forum: Tech Log
17th May 2012, 14:47
Replies: 1,550
Views: 302,018
Posted By gums

Been BZ looking at the Indonesian crash, so not...

Been BZ looking at the Indonesian crash, so not much to contribute here until last two pages ( GASP! world record for posts RE a single crash, ya think?).

Doze has it nailed. Period.

@ Wolf
...
Forum: Tech Log
11th May 2012, 02:46
Replies: 1,550
Views: 302,018
Posted By gums

Sidestick concerns

The lack of visual cues or "feel" of the other pilot's control position is a bogey man.

You see what the jet is doing and question the other dude/gal and then get in the loop.

I have soloed...
Forum: Tech Log
9th May 2012, 22:59
Replies: 1,550
Views: 302,018
Posted By gums

AoA and HUD on commercial jets

Glad to hear from Cland that a few carriers are using a HUD.

His observations agree with mine to a large degree. That is, instrument approaches are much easier and safer. The down side is you...
Forum: Tech Log
8th May 2012, 16:43
Replies: 1,550
Views: 302,018
Posted By gums

Airliner HUD

Thanks for the super link to Boeing, PJ.

@ other.....

You don't need to know the exact AoA you are at or the exact degrees that will get you into trouble. You just need relative values to be...
Forum: Tech Log
8th May 2012, 13:56
Replies: 1,550
Views: 302,018
Posted By gums

AoA mach corrections

I go with Retired about the useful AoA at all mach numbers.

For example, the infamous "pitch up" in the VooDoo had plenty of warning when subsonic, lile medium buffet and wing rock. But we had...
Forum: Tech Log
8th May 2012, 03:50
Replies: 1,550
Views: 302,018
Posted By gums

THNX Retired for discussing how easy using an AoA...

THNX Retired for discussing how easy using an AoA indication is.

Sucker shows stall or optimum approach speed or.... regardless of your weight. And we can still use rules-of-thumb to make a...
Forum: Tech Log
3rd May 2012, 00:44
Replies: 1,550
Views: 302,018
Posted By gums

Thank you, Doze. You've nailed it. And...

Thank you, Doze.

You've nailed it. And still makes me cry.

The "mission" is to get the SLF home or to a vacation spot. There's more to the job than simply being a systems manager.

Gonna be...
Forum: Tech Log
2nd May 2012, 23:09
Replies: 1,550
Views: 302,018
Posted By gums

OODA and instrument cross check

Salute!

Gotta go with PJ



Seems to me that the OODA concept is the basic instrument crosscheck, or am I way off base? I am not talking about air-to-air combat, but basic IFR flying.

Some...
Forum: Tech Log
2nd May 2012, 19:14
Replies: 1,550
Views: 302,018
Posted By gums

Forget Boyd

Salute!

Thanks Okie, that about nails it. Biggest thing Boyd sold was energy management in the new jets. OTOH, I think Yeager and others way back had already cracked the code.

WRT to AF 447,...
Forum: Tech Log
2nd May 2012, 17:18
Replies: 1,550
Views: 302,018
Posted By gums

OODA loop

Salute!

@Lyman

Don't get into Boyd other than the OODA. The guy may have helped get the Viper and Eagle and Hornet into the inventory, but his A2A claims are grossly embellished, and I know...
Forum: Tech Log
2nd May 2012, 15:57
Replies: 1,550
Views: 302,018
Posted By gums

Real time FDR data and such

@ Lyman.....

The relatively intact impact and wreckage pics was what prompted me to postulate the "deep stall" theory. Then I had good inputs from others here and got to see some FCOM documents...
Forum: Tech Log
1st May 2012, 22:01
Replies: 1,550
Views: 302,018
Posted By gums

To my defense of confusing reversion

So I look up the reversion laws and sub-laws and sub-sub-laws. Then read the footnotes and such, and then I get upset. Sorry, but I want/need something to hang my hat on.

And only thing I have...
Showing results 1 to 35 of 45
 
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