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
Search: Posts Made By: gums
Showing results 1 to 26 of 26
Search took 0.00 seconds.
Forum: Tech Log
4th Nov 2011, 13:18
Replies: 1,688
Views: 407,756
Posted By gums

deeply stalled

As posted way back, at least one jet I flew had a true "deep stall" in which recovery using conventional control movements was not possible. I even posted the graph of pitch moments. The good news...
Forum: Tech Log
2nd Nov 2011, 03:19
Replies: 1,688
Views: 407,756
Posted By gums

The hated and feared autotrim, or not

Have been on the sideline too long watching defense of a poor control law reversion sequence versus a defense of a poor crew.

Gums' view is there is a lotta blame to spread about.

Take the...
Forum: Tech Log
26th Oct 2011, 21:57
Replies: 1,688
Views: 407,756
Posted By gums

Lite and heavy pilots

Salute!

I am compelled to comment here.

There are many aspects of flying the neat fighters, with their vastly expanded flight envelopes compared to the "heavies", but the basic lesson here is...
Forum: Tech Log
25th Oct 2011, 23:09
Replies: 1,688
Views: 407,756
Posted By gums

Yokes, sticks and feedback

I do not believe any of the commercial jets last 30 years had a pneumatic doofer to provide some feedback for the yoke/stick. As RF4 said, the Voodoo and Phantom had a ram air bellows that increased...
Forum: Tech Log
22nd Oct 2011, 19:22
Replies: 1,688
Views: 407,756
Posted By gums

AoA and side stick

Been lurking for a bit and finally had to comment about the AoA issue.

Flew only three jets with an AoA indicator - first had a big round steam gauge and we never looked at it unless we were...
Forum: Tech Log
4th Oct 2011, 20:54
Replies: 1,688
Views: 407,756
Posted By gums

Power outta a stall? Speed versus AoA?

Thanks, BOAC. ANd speed is a huge part of the lift equation, like a "squared" component.

So if I hold the same gee ( read lift you can feel in wings level flight), and I increase speed, then I...
Forum: Tech Log
2nd Oct 2011, 03:40
Replies: 1,688
Views: 407,756
Posted By gums

Thank you, Conf. When I read the 'bus...

Thank you, Conf.

When I read the 'bus "manuals" and such that we have had provided here, I see a plethora of reversion "laws" that are not really "laws". They are simply less restrictions on bank...
Forum: Tech Log
1st Oct 2011, 23:09
Replies: 1,688
Views: 407,756
Posted By gums

HAL and sfwe and protections

No problem here with HAL until HAL starts to get in the way of what we pilots believe, actually BELIEVE, what we need to do and HAL gets in the way because HAL is programmed to PROTECT us. 'nuf...
Forum: Tech Log
1st Oct 2011, 04:25
Replies: 1,688
Views: 407,756
Posted By gums

State machines, training and "touch"

Just had to get my barb in for Doze, heh heh. And support RR.



Basically, Doze has it right, to a point.

As a systems engineer after I hung up my g-suit, I wrote the specs and the sfwe...
Forum: Tech Log
22nd Sep 2011, 00:10
Replies: 1,688
Views: 407,756
Posted By gums

Mach effects and AoA

Trust me, I am very familiar with mach and AoA. I also appreciate a design of the fly-by-wire control laws that takes into account of all the aero crapola.

Until you have supersonic flow over the...
Forum: Tech Log
21st Sep 2011, 16:24
Replies: 1,688
Views: 407,756
Posted By gums

Nice pics. Best-looking jet I ever flew. And...

Nice pics. Best-looking jet I ever flew. And PLZ note the lack of a "PNF" or the ability to leave the cockpit and take a nap.

The Viper could not enter a stall in the conventional sense due to...
Forum: Tech Log
17th Sep 2011, 08:23
Replies: 1,688
Views: 407,756
Posted By gums

Alpha sensors, etc.

I gotta go with 'bird and other pilots.

I realize that an airspeed below 60 knots ( TAS, EAS, IAS, CAS, whatever) is unlikely once airborne. OTOH, the AoA vanes or conical probes or whatever are...
Forum: Tech Log
8th Sep 2011, 02:14
Replies: 1,688
Views: 407,756
Posted By gums

@ Dozy, I am gonna go with Ian W on the...

@ Dozy, I am gonna go with Ian W on the weight-on-wheels design consideration.

If you want both < 60 knots and WOW, a simple "and gate" works. If you want either, then the "or gate" works.
...
Forum: Tech Log
7th Sep 2011, 13:55
Replies: 1,688
Views: 407,756
Posted By gums

Stick shakers, et al

I go with Clandestino about using a "vibrator" on the stick. In the AF447 case, the dude that kept pulling back would have felt it, as he was not just sitting there watching Otto try to fly the jet....
Forum: Tech Log
6th Sep 2011, 22:22
Replies: 1,688
Views: 407,756
Posted By gums

Control law sub-mode

I had seen the reports about the A340 incident, but didn't see the control law logic back then. I subsequently saw that "sub-law" in some of the great data we have had on this forum.

I initially...
Forum: Tech Log
4th Sep 2011, 02:38
Replies: 1,688
Views: 407,756
Posted By gums

Training, experience, design philosophy

A few good points recently.

I hitch hike on RF4's comments, if you will excuse me.

The military guys here flew jets with vastly different operational requirements, and some of our jets had...
Forum: Tech Log
31st Aug 2011, 02:34
Replies: 1,688
Views: 407,756
Posted By gums

Not so sure the crew was just sitting back and...

Not so sure the crew was just sitting back and enjoying the ride, Ian.

They had just told the flight attendants to be ready for some bumps, and they were turning a bit to left of course.

The...
Forum: Tech Log
28th Aug 2011, 22:13
Replies: 1,688
Views: 407,756
Posted By gums

Body rates

No problem, Clandestino.

I have been having a problem expressing myself lately.

Still want folks to know that the human "body rates" can help for the first second when something unusual...
Forum: Tech Log
28th Aug 2011, 14:42
Replies: 1,688
Views: 407,756
Posted By gums

plan A, then B, then C, then...

Sorry, BOAC, I worded my concern poorly.

You are spot on as far as the initial procedure and then "plan B" and so forth. That process has certainly saved many of us here. Lest anyone here think...
Forum: Tech Log
28th Aug 2011, 05:09
Replies: 1,688
Views: 407,756
Posted By gums

yaw and AoA indicators

Yeah, Grity, if you could see the AoA string sucker, then you might/could use it! Night could be a problem.

We had a "yaw string" on the T-33, and that sucker worked up to 400 knots or so. ...
Forum: Tech Log
28th Aug 2011, 00:01
Replies: 1,688
Views: 407,756
Posted By gums

stalls and "deep" stalls, yet agin

Yep, Ventus, we've all heard about the "deep stall", and went thru the litany a thousand posts ago.

I even posted a graphic of the pitch moments of the Viper to show the problem, and no T-tail or...
Forum: Tech Log
27th Aug 2011, 21:58
Replies: 1,688
Views: 407,756
Posted By gums

Boldface, OODA and training

I am disturbed by some here that believe you can handle an emergency situation or an "upset" ( love that term, and cracks me up and guess it really means "WTF?, over") by following rote, memorized...
Forum: Tech Log
22nd Aug 2011, 00:28
Replies: 1,688
Views: 407,756
Posted By gums

"deep" stall versus "deep stall" again

Salute!

I tend to agree with the term "deep" stall versus the other.

Aparently, in the commercial jet community, the term "deep stall" gained popularity with the T-tail design. However, even a...
Forum: Tech Log
16th Aug 2011, 16:41
Replies: 1,688
Views: 407,756
Posted By gums

Standby Gains

CJ: I agree with Rob21, and I previously mentioned that the Viper had a "standby gains" function for just this reason - bug in the pitot tube(s), ice, physical damage ( and we had one accident from...
Forum: Tech Log
15th Aug 2011, 00:13
Replies: 1,688
Views: 407,756
Posted By gums

Use of autopilot

Thanks for nice words, Diagnostic. All of us can improve our piloting skills, regardless of the thousands of hours and hairy moments.



I flew mostly single-seat planes. Had about 400 hours in...
Forum: Tech Log
14th Aug 2011, 20:34
Replies: 1,688
Views: 407,756
Posted By gums

automation and feedback

Thank you Safety, thank you. The Norman paper is appropriate and a necessary "read" for all here.

Before adding to 'bird's ideas, I must point out that the accident started when air data sensors...
Showing results 1 to 26 of 26


 
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.