-
Making the Brazilian ATR-72 Spin
by
[sc name=”post_comments” ][/sc]
Note: This story was corrected on August 10th at 10:23 am, thanks to the help of a sharp-eyed reader.
Making an ATR-72 Spin
I wasn’t in Brazil on Friday afternoon, but I saw the post on Twitter or X (or whatever you call it) showing a Brazil ATR-72, Voepass Airlines flight 2283, rotating in a spin as it plunged to the ground near Sao Paulo from its 17,000-foot cruising altitude. All 61 people aboard perished in the ensuing crash and fire. A timeline from FlightRadar 24 indicates that the fall only lasted about a minute, so the aircraft was clearly out of control. Industry research shows Loss of Control in Flight (LOCI) continues to be responsible for more fatalities worldwide than any other kind of aircraft accident.
The big question is why the crew lost control of this airplane. The ADS-B data from FlightRadar 24 does offer a couple of possible clues. The ATR’s speed declined during the descent rather than increased, which means the aircraft’s wing was probably stalled. The ATR’s airfoil had exceeded its critical angle of attack and lacked sufficient lift to remain airborne. Add to this the rotation observed, and the only answer is a spin.
Can a Large Airplane Spin?
The simple answer is yes. If you induce rotation to almost any aircraft while the wing is stalled, it can spin, even an aircraft as large as the ATR-72. By the way, the largest of the ATR models, the 600, weighs nearly 51,000 pounds.
Of course, investigators will ask why the ATR’s wing was stalled. It could have been related to a failed engine or ice on the wings or tailplane. (more…)
-
How the FAA Let Remote Tower Technology Slip Right Through Its Fingers
by
[sc name=”post_comments” ][/sc]
In June 2023, the FAA published a 167-page document outlining the agency’s desire to replace dozens of 40-year-old airport control towers with new environmentally friendly brick-and-mortar structures. These towers are, of course, where hundreds of air traffic controllers ply their trade … ensuring the aircraft within their local airspace are safely separated from each other during landing and takeoff.
The FAA’s report was part of President Biden’s Infrastructure Investment and Jobs Act enacted on November 15, 2021. That bill set aside a whopping $25 billion spread across five years to cover the cost of replacing those aging towers. The agency said it considered a number of alternatives about how to spend that $5 billion each year, rather than on brick and mortar buildings.
One alternative addressed only briefly before rejecting it was a relatively new concept called a Remote Tower, originally created by Saab in Europe in partnership with the Virginia-based VSATSLab Inc. The European technology giant has been successfully running Remote Towers in place of the traditional buildings in Europe for almost 10 years. One of Saab’s more well-known Remote Tower sites is at London City Airport. London also plans to create a virtual backup ATC facility at London Heathrow, the busiest airport in Europe.
A remote tower and its associated technology replace the traditional 60-70 foot glass domed control tower building you might see at your local airport, but it doesn’t eliminate any human air traffic controllers or their roles in keeping aircraft separated.
Max Trescott photo Inside a Remote Tower Operation
In place of a normal control tower building, the airport erects a small steel tower or even an 8-inch diameter pole perhaps 20-40 feet high, similar to a radio or cell phone tower. Dozens of high-definition cameras are attached to the new Remote Tower’s structure, each aimed at an arrival or departure path, as well as various ramps around the airport.
Using HD cameras, controllers can zoom in on any given point within the camera’s range, say an aircraft on final approach. The only way to accomplish that in a control tower today is if the controller picks up a pair of binoculars. The HD cameras also offer infrared capabilities to allow for better-than-human visuals, especially during bad weather or at night.
The next step in constructing a remote tower is locating the control room where the video feeds will terminate. Instead of the round glass room perched atop a standard control tower, imagine a semi-circular room located at ground level. Inside that room, the walls are lined with 14, 55-inch high-definition video screens hung next to each other with the wider portion of the screen running top to bottom.
After connecting the video feeds, the compression technology manages to consolidate 360 degrees of viewing area into a 220-degree spread across the video screens. That creates essentially the same view of the entire airport that a controller would normally see out the windows of the tower cab without the need to move their head more than 220 degrees. Another Remote Tower benefit is that each aircraft within visual range can be tagged with that aircraft’s tail number, just as it might if the controller were looking at a radar screen. (more…)
-
Let’s Discuss the Future of Flight Training
by
[sc name=”post_comments” ][/sc]
As I write this, the start of EAA AirVenture Oshkosh is five days away. Between the daily rain showers and afternoon thunderstorms (yes, it’s pretty soggy here) the air is growing increasingly alive with the sound of engines I seldom hear during the rest of the year.
If you plan to be a member of this airborne symphony, or in the automotive conga line snaking its way into Wittman Regional Airport, and you’re free at 1130 on Wednesday, July 28, I urge you to visit the Learn-To-Fly Discovery Center for a panel discussion on the Future of Flight Training.
The LTF Discovery Center is on Main St., which connects the main gain to AeroShell Square, where all the big, cool airplanes are. And the discussion should be lively, which is one reason why (I think) NAFI Executive Director Jason Blair invited me to participate.
When he called to seek my participation, Jason, a loyal JetWhine reader, specifically mentioned some of my previous posts and said something about my not seeing the world with ordinary eyes. I’m not so sure of that, so you be the judge—here are my some of my recent training related posts:
-
Beyond Social Media 101 – Answers to Real Aviation Problems at #OSH10
by
[sc name=”post_comments” ][/sc]
AirVenture 2010 will soon be home to thousands of airplanes, hundreds of thousands of people and dozens and dozens of great programs all designed to stimulate just about anyone’s curiosity about all things aviation. For the social-media curious, there’s something new this year … collaboration … with an attitude!
Jetwhine is teaming up with the Airplane Geeks, Flightblogger and MyTransponder to build an interactive session that answers the social-media question to which everyone wants an answer; how can we stop wasting time and money noodling with Facebook, Twitter and blogs and solve some of the real customer-engagement problems facing our industry.
The panel begins at 4 PM on Tuesday July 27th in Pavilion 6 just north of the control tower and runs until 5:15 PM. That means we’ll run concurrently with the airshow so arrive early to get a seat up front.
Our panelists include Rob Mark and Scott Spangler from Jetwhine, Rod Rakic from MyTransponder, Dan Webb from the Airplane Geeks and Jon Ostrower from Flight Global. All are experienced social media practitioners who will tell us where social media’s headed and what your company needs to know to stay one-step ahead of your competitor.
If you’re “just” a social media aficionado hoping to follow the action or meet the experts, you’re most welcome to join us and listen in. But we also hope you’ll add your two cents to the discussion.
Whether you plan to join us or not, do send along a real-life aviation problem that social media has solved for you, or an area the industry needs to focus on where engaging huge groups of people might just be the answer for you or your company.
And just for fun, we’ll be auditioning a guest host for a future Airplane Geeks show, so plan to rehearse your best elevator pitch before next Tuesday about why YOU should be our choice. We’ll also have some Airplane Geeks T-Shirts to give away and of course, some of those incredible Jetwhine buttons to impress your friends at the show.
All our panelists should be on Twitter during the show by the way. Rob Mark’s @jetwhine, Dan Webb’s @danwebbage, Jon Ostrower’s @flightblogger and Rod Rakic is @mytransponder.
See you next week. And we’ll even tell you the meaning of #OSH10 in today’s title.
Rob Mark, editor
Technorati Tags: Airplane Geeks,Jetwhine,flightblogger,MyTransponder,AirVenture 2010,Rob Mark,Dan Webb,Rod Rakic,Jon Ostrower -
UAV Next Step: Autonomous Aerial Refueling
by
[sc name=”post_comments” ][/sc]
It seems that the capabilities of unmanned aerial vehicles will soon be complete. On July 1, DARPA announced a $33 million dollar contract for Northrop Grumman to demonstrate autonomous aerial refueling using two NASA Global Hawks.
The company will retrofit the UAVs with a probe-and-drogue system, with one being the tanker and the other being thirsty. The company didn’t give a lot of information on what it meant by autonomous, so let’s assume that the two UAVs will be programmed to meet at a specific location and time and the onboard systems will take it from there.
Just to make the accomplishment special, to quote the release, the refueling will “take place at a much higher altitude than has been previously demonstrated with manned aircraft. It will also be the first time that [high altitude, long endurance] UAVs have flown in formation.”
One wonder’s how high? Given manned tanker performance, most midair refueling takes place between 20,000 and 35,000 feet? (What say you experts in JetWhine land with first-hand experience?) The Global Hawk’s service ceiling is 65,000 feet, and unrefueled it has a published endurance of 36 hours.
The notice said the technology that makes this autonomous feat possible will benefit manned flight as well because it will reduce pilot workload. Yeah, automation does that.
As previously discussed (See UAV Pilot Shortage & Military Intelligence, UND Plants Seed of No-Pilot Airliners, and No-Pilot Aircraft Go Vertical & Hover) it may eventually affect the military and civilian job market, or at least change a pilot’s job description. And let’s not forget another Global Hawk First: FAA clearance for operation in US national airspace. —Scott Spangler