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  • Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.

    Post 16 Update

    Post 17 Warning

RAZBAM A-7 Sitrep

Awwwww.. C'monnnn.. if you fly the plane right, the indexer locks on the ball and stays there all the way down.. I can do it :) :0 .. surely you folks are better than me at flying these things.. ;)..

as to it being a hot bird on landing.. if you ignore your speed and simply adjust the throttle to give yourself an AOA of 8 degrees shelll land with your wheels touching at 120 knots.. However, the Navy is very specific about the speed you should be landing at, and thats 145 knots with a light load.. You still want to keep the plane as flat as you can.. pitching the nose up will only bring you grief ( in a big way ). I'll put it as gently as i can.. its not a plug n play bird.. it'll teach us a thing or three about flying ( me included ). Theres a lot about her to be respected and loved, but shes far from being a toy.. She'll kill you if you dont pay attention.. personally, i think its one of the best planes ive ever flown..
 
Well... Since we're talking about AOA and landing speeds at sorta kinda the same time, it may be worth pointing out that the magic number that never changes, when you want to “land right” is 17.5 “units” of AOA, which is indicated on the HUD by the AOA indexer centered about the Flight Path Marker. What speed you need to fly to achieve 17.5 units depends on your gross weight, and can be found in the (now) infamous AOA vs. Airspeed tables in the NATOPS. The heavier you are, the faster you need to fly to achieve 17.5 units. 150 Knots for a 33,000 gross weight, but only 120 for a light load of 21,000 lbs. Of course, what the holy heck 17.5 “units” means in terms of actual AOA angle, is evidently a deep dark secret known only to the engineers who built the plane. Interestingly, the EA-6B has the same type of AOA indicator (0 – 30 units) and the same landing AOA of 17 units.
 
My friend Fred Sanders, CDR, USN, (Ret.), emailed me some comments about flying the A-7:

NATOPS check lists specify the trim settings on takeoff. In my 2,500 hours, I never, ever, had a problem with pitch divergence. On the boat, you set the trim according to the check list, and if you had a heart attack and died during the cat stroke, it would fly away on its on, happy as a pig in stink. For a while. On the beach, set the trim according to NATOPS, and just rotate and she flies just perfectly. NEVER had a problem....ever.

145 knots landing speed, on the boat, is a bit high. Depends on fuel load and gross weight. That's probably not far from the truth. Bear in mind, 145 knots is about 165 mph, and that's a tad fast. Actually, when you come aboard the boat or the beach, you fly Angle Of Attach (AOA). Airspeed is not considered. AOA is the sole reference to landing speed. Actual speed matters NOT. You fly AOA, and the airplane tells you what that is. Could be 130 knots, or 145. Does not matter. You don't look at the airspeed indicator. Never. You watch the AOA indicator to the left of the windscreen, mounted right in your field of view. By the way, the LSO on the boat sees your AOA indicator, as there are lights on the nose gear that show him the same thing you are seeing in the cockpit, so you can't cheat.
 
Thanks Chief :).. Your advice was immeasurable last night as we worked that out, and we found that flying the ball got us on deck at 120 knots.. The question i want to ask now is: About how long did it take for the engine to go from fifty percent thrust to 100 percent thrust?? If your speed dropped too low, how long did it take for the engine to respond sufficiently to save your butt??
 
Progress

I must say Warchild, It is a Joy to be able to see you Ask the Questions, Get the Answers and Move this Project Forward, What a breath of fresh air you are, Its a Joy to see you do your thing.... Thanks. Please keep up the Great work:engel016::engel016::engel016:
 
Pam,

I just spoke to Fred Sanders. We talked about engine spoolup response time, etc.... I just sent you email with his phone number/email. You can communicate directly with Fred, and hopefully get all these questions answered.

Plus, Fred can forward your questions to several other former A-7 pilots buddies of his.

GO NAVAIR!

Pete
 
Just a memory that popped into my head:

There was a mech in Attack Squadron Fifteen who was the best at "tweaking" the Corsair II engine during hi-power tests. There were gauges that they'd hook up the the engine to check various pressures, etc..... But at some point, (his name was Rick) he would "tweak" the power settings by ear. He had a talent for discerning a certain sound the engines would make that would indicate they were tuned to optimum settings.

And I remember climbing up the ladder to watch cockpit indications during hi-power tests. When that engine was at military, it was an incredible feeling, holding onto that canopy sill. Awesome.

Nobody could do it except Rick. Gauges didn't do the trick.

NC
 
It's great to see people getting things done; it's especially great to see developers working so hard to achieve accurate flight dynamics by combining textual and oral sources. This sort of thing makes me so proud of this flight sim community.

I was not terribly interested in the A-7, but this discussion on flight dynamics has made me a future Razbam customer of the A-7. I'm sure I'll learn to love her. This dedication to flight dynamics also makes me very very hopeful for the F-100 which Razbam allegedly has in the pipeline.
:salute:

Chris Eells
 
Here's a email I just got from Fred Sanders:

With regards to the external visual details of this simulation Corsair II, the representation is artful and accurate!!

Pete, the planes were dirty. I once joined a crew onboard the USS Kennedy to wash them. I had a CPO who worked for me, Chief Wright (actually, I worked for HIM, and did exactly what he told me to do). Have some slides here at the house of that event. If I can ever find a way to transfer them to email, I'll send them. CPO Wright was the Salt of the Earth, and I loved him like a brother.

The underside of the A-7 was wet and pink: hydraulic fluid. It leaked badly, and if you went out to man up and it wasn't pink on the belly, then it was empty.

Pete, they were just majestic machines. Just machines. But, damn, what fine machines. You could pull G's till your face turned blue and the SLUF didn't care a bit. In a bomb run, stable as the dining room table. Not wonderful in a dogfight, but that's why we went places in, at least, pairs (a "Section") and usually went off the boat as a flight of four (a "Division"). Fred Sanders, CDR, USN, (Ret.)
 
:) Not good in a dog fight but able to pull G's.. That tells me that shes good at high speed maneuvering, and sux at low speed maneuvering.
You see, it's those wings.. They cup the air when you pitch the nose and they hold it all up against the fuselage, just piling on the drag like it was going outta style. You need to be moving pretty fast to overcome it or shes going to slow down like she hit a brick wall and drop..
The airplane is definitely a Lady. She may not be pretty, but there's a lot there to respect, and you treat her like a lady, or she'll kill ya :lol:;..
My tummy's still doing flip flops.. Ive pushed flight models into the realm of reality before ( F-14, B2 Vulcan etc )but never anything that had a ten degree anhedral angle on its wing. And people who are expecting to just get in it and fly it like it was a cessna are going to be in for a shock.. this plane makes no compromises, and yet, if you follow just dome very simple rules it sets for takeoff and landing, it's one of the most satisfying rides i've ever experienced.. What amazes me is the magic that happened. the inexplicable that took place as with each number we edited, each step we took towards final, the plane almost became a living entity.
meh.. maybe its just my worm ridden befuddled old mind thats making it up, but i hope you all can see it too.. I hope you all can enjoy it the way i do..
 
Ladies and Gentlemen, we´re proud to announce that the flight model is a final, we tamed the AOA demon, and moving into release at vertiginous speed.

...BTW, the devil resides at 117 knots...

Best regards
Prowler
 
Prowler1111 said:
...BTW, the devil resides at 117 knots...

Best regards
Prowler
Click to expand...

yeahhhhhhh: the ladder goes something like this..

at 130 knots, its ok to pee your pants, we understand..
at 120 knots its 120 knots. do you know where your prayer book is at?
at 118 knots hope your prayers work and your god really likes you
at 117 knots kiss your ass goodbye. your doomed..
::roflmao::
 
Prowler1111 said:
Ladies and Gentlemen, we´re proud to announce that the flight model is a final, we tamed the AOA demon, and moving into release at vertiginous speed.

...BTW, the devil resides at 117 knots...

Best regards
Prowler
Click to expand...

Whohoo! It's time to clear the flight deck of all unnecessary personnel. Goggles down, sleeves rolled down, life vests on and securely fastened. Check for FOD around the go aircraft. Prepare to start the go aircraft! :jump:
 
warchild said:
at 130 knots, its ok to pee your pants, we understand..
at 120 knots its 120 knots. do you know where your prayer book is at?
at 118 knots hope your prayers work and your god really likes you
at 117 knots kiss your ass goodbye. your doomed..
::roflmao::
Click to expand...

That's funny right there. I know funny, and that's funny. Maps? Check! Life vest? Check! Pocket NATOPS? Check! Prayer book? Check! Ready!
 
So, I guess it's about time for the Line to send a tractor to the hangar, and bring her out for preflight, eh?

[YOUTUBE]RJpc_0VI7i4[/YOUTUBE]
 
Attention on the Flight Deck:

"Now launch the Alert 5 Corsairs!"

[YOUTUBE]DoXtuaBKb00[/YOUTUBE]

GO NAVAIR!!!

Navy Chief
 
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