STRUCK: An Aerospace Engineering & Lightning Protection Show

In this episode, we discuss the Volodrone EVTOL cargo-hauling drone - is it going to be a game-changer? Boeing's former test pilot on the 737 MAX project has now been indicted - are the charges fair? The 787 dreamliner has new parts problems, and we discuss the Pratt & Whitney 3D printed jet engine - could we see a full-scale size sooner than later?

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We discuss the Tetra personal "Buy n Fly" EVTOL, which purports to be a kit experimental aircraft for delivery in 2022. Will this one-seat concept gain mainstream appeal? Southwest Airlines earned a tsunami of bad PR with 1000s of flight cancellations and a dodgy response as to why it all went down. Plus, LA and the UK are taking steps to get ready for Urban Air Mobility, and more.

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The DigiProp program is aiming to bring complex composite propeller designs to life easier and faster - is it working? Plus, we talk about the COVID recovery and a recent report that $201 billion was lost due to the virus' impact on airlines. Lastly, Ehang showed off its new VT-30 EVTOL recently - where is Ehang going? And, AirBus and Honda are now off and running - will their designs fit a different niche than Joby, Volocopter and others?

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TRANSCRIPT: Ehang Shows VT-30; Will EVTOLS Ever Have Swappable Batteries?

this episode is brought to you by weatherguard lightning tech at weatherguard we support design engineers and make lightning protection easy you're listening to the struck podcast i'm Dan Blewett i'm Allen Hall and here on struck we talk about everything aviation aerospace engineering and lightning protection

All right welcome back to the struck airspace engineering podcast i'm your co-host Dan blewett on today's show we'll talk a little bit about uh southwest and some other coveted vaccination rules that airlines are starting to enforce their employees and we'll talk a little bit about the recovery still kind of an update for the fall season here about uh covet and where the airlines are going we're going to talk a little bit about digiprop which is a program looking at the use of thermoplastics and braiding and some other interesting techniques for making propellers and we've got a bunch of evtol news we'll chat through today alakai and their sky hydrogen ev2l is looking for investment we'll talk about their design and some of the challenges there honda's also throwing their hat into the ring developing a hybrid electric evtol and we've also got some announcements from ehang on their vt30 some clarity on airbus as they explain explain their design behind the city airbus and lastly uh just some interesting um info about battery swaps and whether this might be something that could come to aviation or maybe it won't work we'll see um alan let's start with southwest so the latest airline to uh mandate their staff all 56 000 employees to get vaccinated by december 8th and of course this comes at the heel of a of a article by al jazeera that says the global airline industry has seen a 200 billion dollars 201 billion dollar uh loss due to cove at 19. so is this just the latest airline just trying to protect themselves as much as they can obviously hiring and the workforce is a very difficult it's a very difficult time to find employees and to keep everyone up and running i mean how do you view is this like the natural progression here that all these airlines are doing this well united did it a little while ago and now southwest is into the same position i think uh i think american and delta are in the same boat at the moment uh i think you have a really hard time with this we're already seeing the same sort of prescriptive uh you either have a vax vaccine or you or you're fired and we don't provide severance which is a nice little twist uh that is not working well in my area right now and new york state has had a big purge in a sense of where they're just firing all the health care workers that refuse vaccinations and that includes all staff it's not just nurses and doctors it's everybody that works around the hospital food service clean uh janitorial people it's a big deal uh and i'm not sure in in the sort of uh environmental today that it this is a good long-term solution for the airlines i know at the short term it raises some pr it makes people a little more comfortable to go fly i think but do i really care if the line mechanic has a vaccination or not or has previously had covet i i don't think i care as a part of the flying public it seems like more of a personal decision so when these companies are stepping in into sort of health care matters in america it's going to be a problem there's going to be a 10 to 20 percent of the population that will not participate in that regardless of what goes down and at a time when the airlines are struggling i'm not sure you need any laying off employees or letting basically firing employees i'm not sure that's a smart move i think there's other ways you could have gone about it but here we are do you think that do you think this is going to get mandated beyond airlines right now do you think this is just sort of going to be a universal thing uh i'm not sure i mean part of this announcement from southwest is that they're a federal contractor right so the us government mandate therefore applies to them and that's the same boat for american a couple other airlines um you know delta is also a federal contractor but they have not made this announcement yet who knows if they will it seems like it's probably coming here and of course united united mandated vaccines for their staff and it says 96 have given proof of inoculation so um trying to meet that deadline which was a week ago so it seems like it's working number one um yeah i don't know i mean i don't think mandating vaccines is the right move but then again it seems like we're going to have to live with covid forever like it's just so i mean we live with the flu forever COVID's more contagious than that it seems like it's never going to go away so for companies that want to get back to normal um especially if they're on the hook for some of those health care costs which um which airline was was talking about that was that united who said that you know if you don't want to get vaccinated we don't want to pay for i'm not sure if it was them or not i can't remember but yeah they don't want to pay for you know that that expense if you don't want to it's going to be more expensive to get your health care if you don't want to get vaccinated and i think that's it's interesting um i don't really have a stance on it either way at the moment but you know people have a right to control their own destiny but again when it comes when it also affects a company that needs to move forward you know yeah it it's it's complex complex so but you know it's complicated yeah yeah because yeah you have right to do what you want but our company has the right to do what they feel is best for the company as well and if those two things don't align then maybe you have to find another company to work for you know that's i don't know no one has a right to work for any given company right you don't have a right to work for southwest you choose to work with southwest and southwest chooses to employ you and and play by the rules there too so it's you know with private companies it's hard to sorry to know but yeah i think people do have to kind of play by their rules they they they they well short term right i think uh it's all depends on how rigorous the validation is i think a lot of people in the united states have already had cove and i think there's a really good argument to make about if you already have had kova do you need to have the vaccination and also a large part of southwest is in texas in terms of operations and i'm i'm when when you hear anything when you hear any vaccination number that's above 75 80 percent you really wonder if that is a true true accurate number because the vaccination numbers around the world are somewhere in the 75 to 80 percent then it turned and it kind of tops out so i i'd be surprised if any airline had really 95 plus percent um vaccination status i wonder if some of that has been doctored or not but hey that's the world we live in right i think there's going to be some big time drawbacks when the next union negotiation happens because it's going to come up and i think i think the unions have will have enough power to drive that out of the negotiations like you can't you can't start firing union workers because they're not vaccinated with something that you prescribe because i think from the union's perspective where does it stop right i i think you know there's a slippery slope argument going on right now and that's a valid argument to have uh but workers are not without rights and particularly in the airline industry the units are relatively strong so when you when the next go around happens i'm curious to see if this starts a little bit of a fight and it probably will but it looks like global capacity for airlines is about 70 of 2019 levels so that's encouraging that that rebound has happened it was around that level back in july and then took a dive back uh between august and and september when you know the outbreak started to accelerate again but it's like we're getting there but 70 is pretty low it's not like that's a high amount but it's obviously a lot better than what it was in 2020 which was nothing essentially so right yeah so the rebound is the rebound is rebounding i guess we can put it that way and we'll see how the vaccination stuff continues to impact that but i mean that might make people more apt to go fly when they know all the employees on you know walk in the aisles have been vaccinated and most people on a flight would have been vaccinated as well so maybe that gets confidence back up where people get out there we'll see um so moving on some interesting engineering stuff so on this digiprop project where they're looking at new ways to develop composite propeller blades specifically for turboprop aircraft so obviously these are complex shapes they have a lot of contours they're difficult what are some of the things that this digi this digital propulsion um project is is trying to solve well when you have to lay up a prop there's a couple of ways to do it composites wise there's been in some cases a lot of it i think is still hand layup on the construction which then adds a lot of cost and the complexities of the shape

Eve Urban Air Mobility, owned by Embraer, has announced an agreement to sell 100 EVTOL aircraft to Bristow, the well-known helicopter operator. What will come of this partnership for the two companies? Airbus is back in the EVTOL hunt, announcing a new aircraft with a unique design. But, it has insiders scratching their heads - why now? Plus, we discuss an intricate luggage scam, Rolls Royce winning the B-52 engine contract, Bell Nexus EVTOL being featured at the Smithsonian, and more.

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Should a Boeing test pilot face criminal charges for the 737 MAX crashes? Or, is this just the FAA and government looking for a scapegoat in a tragedy? Plus, Boeing faces increasing pressure to sell planes to low-cost carriers at a reduced price: is this good business? Lilium is now a public company, but will their EVTOL take flight with a 25% reduction in available cash? And, we discuss the future of EVTOL heliport locations.

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The Boeing 737 MAX has an extending wheel system - how does it work? The Northrup Grumman Model 437 autonomous aircraft is impressive, but when will we see it in action? And, the Biden Administration is handing out half a billion dollars to aerospace companies and airlines - is it just a bandaid? Great video on the Boeing 737's Wheels here.

Learn more about Weather Guard StrikeTape segmented lightning diverters and aircraft lightning protection consulting services. Follow the show on YouTube, Twitter, Linkedin and visit us on the web. Have a question we can answer on the show? Email us!

this episode is brought to you by Weather Guard lightning tech at weatherguard we support design engineers and make lightning protection easy you're listening to the struck podcast i'm Dan Blewett i'm Allen hall and here on struck we talk about everything aviation aerospace engineering and lightning protection

Transcript: Northrup Grumman Model 437 & Boeing 737 Max 10 Wheel Engineering

Alright welcome back to the struck aerospace engineering podcast i'm your co-host dan blewett on today's episode a lot of policy news coming out of the u.s so the biden administration has put a bunch of awards out there are there's clean air and cleaner fuel there's a big push for improving some of that efficiency and reducing carbon emissions you know getting sustainable airline fuel developed all these sort of things so the byte administration is pushing a lot of money out to the faa and other agencies to end to some large aerospace companies themselves to help to develop some of these technologies so we'll talk through a bunch of the implications there uh in our engineering segment we're going to talk about northrop grumman's new uh model of an autonomous aircraft that's got some serious speed um possibly used for future drone missions uh the boeing 737 max's extending wheels which are really unique and interesting and we'll talk a little bit about a 2 megawatt electric motor from right so let's start allen with the faa so biden has you know the administration has earmarked some money to the faa and as part of their clean program they're doling a lot of this out to general electric aviation honeywell pratt whitney boeing roar delta techops gk and aerospace mds coding and america's phoenix they're all working on different projects to meet some of these standards for co2 emissions you know hoping to reduce that to by about 20 percent uh nox uh emissions by 70 and noise as well also particular particulate matter so give me some of your perspective on this obviously you know reducing emissions is difficult um and you've talked a bunch at length in the past about how maybe the airlines should be not quite in the same boat as you know transport other other forms of transportation yeah so the by the administration essentially handing out checks to some larger aerospace companies is kind of unique uh and they can do it under the veil of a lot of different uh projects at the moment and the obvious one for them is uh clean air right so they i think this is sort of indicative of a larger problem that's going on that the airline industry in general has been has been in a financial hurt and they've been asking congress for some relief for at least a year maybe a little bit longer now and they're starting to get in the in different forms uh so there's been several hundred million dollars over a half a billion dollars doled out so far and i think more is yet to come now you know you kind of wonder if ge and honeywell weren't already on some of these tasks uh particularly ge you know gets been pushing cleaner skies for a long time and and they've been doing a lot of work internally forever so this is not unusual for them but i think it's just a a a unique way of trying to get funding to these companies and i i think the bigger scope is at what point will the abide administration start to realize that they need to get the airline industry going and pumping cash into it isn't a long-term fix it's a short-term bandage don't you see that dan like we got to get people flying again and it seems like for some policy reasons we we're avoiding and in fact i think it was again this week where dr fauci was talking about restricting people's access to travel on airlines and trains and buses and everything else if they didn't have a vaccine card which is just makes friction right friction reduces travel yeah and i mean that's that's true yeah i i guess i'm not sure how all the the pieces fit together because some of this money is going to you know like you said these aerospace companies who are developing technologies for the future obviously that's good for his agenda because hey we're doing thing we're active right trying to fight against carbon emissions for climate change um so for that you know liberal base who's you know really concerned about that of course there's obviously moderates and conservatives who care about the environment as well um you know that seems like an important part of it now 100 million dollars to those bunch of companies doesn't seem like that much money um especially considering you know engineers are well paid and and hard to find people um so i don't know i don't know how far that money goes on on the one hand of course there's a lot of different layers to this so they're also um besides the aerospace companies they're giving 482 million in pandemic relief to the greater you know aviation industry so some of the airliners trying to keep jobs and trying to keep those companies from cutting jobs and then of course there's all these other standards that he's implementing you know they're trying to get to a greenhouse gas emissions decline of 20 percent by the end of the decade so um trying to get that down by 2030. um i mean do you feel like that's a realistic goal that i mean 20 cut seems pretty big at this point especially considering like you said how hard aviation's companies are trying to reduce fuel consumption anyway right you know another even another 10 i think is going to be difficult at this point just because of the advances the industry has made over the last 30 40 years there's not a lot of uh extra room to screen out squeeze out efficiencies you're you're kind of there right feels like kind of like the olympics like sprinters are so fast now they're not gonna you know they're not gonna jump from 9.7 to 9.4 like the human capacity is getting pretty close right um is it kind of the same way on aircraft or not not so much that's a really good point do you remember a couple years ago the discussion and the research done about jesse owens and saying if you had put jesse owens in today's footwear and on today's athletic tracks that he'd be running just as fast as like a usain bolt like they'd be really close he would be competitive in that arrangement even though that was 1936 or somewhere in there where he competed right so uh it sort of has the same feel to it like yeah we have this existing technologies there's only so much you can squeeze out of it so you're just basically changing the the track shoes so to speak that the core of it is still pretty much the same there's only some so many things you can do there yeah he was incredible he i mean he like obliterated people back then like he was so much faster than the other the common man of his day but yeah and of course usain bolt is a great example because he seems like the perfect specimen of a human being to run as fast i mean long levers credibly explosive i mean like he's built to sprint as much as any humans ever been um and so like improving on usain bolt seems really hard right i mean like he's fastest human in the world it's like how do you get better than that right um because training is pretty modernized i mean there's you know there's a lot it seems like there's a lot of parallels between the two worlds but i mean are any of these fuels going to make that big of a difference i mean i don't know the we've talked a little bit about some of the sustainable fuels but um are they really going to be able to put the performance in the same category or and you've talked about safety like you don't want to just like throw some new fuel through a system because in a car you know if the ethanol mix or something for example doesn't work the car rolls to a stop right but planes can't can't glide down to a stop obviously right well i think it comes down to energy density and the fuels right and some of the sustainable fuels have less energy density means we got to carry more of them which seems overall that become can become less efficient so is it really worth the development extra cost for something that's less efficient you just stick with what you have right now and try to make it more efficient that's that's a really good question because i think with the advent of the electric motor you know at what point did we just say all right we've we've honed the jet a fuel market as best as we're ever going to get it or really close to it maybe we can squeak out another 2-3 let's just say that and then do we then whatever aircraft we can transition over to electric we transition it to to overall the whole industry is a mission profile that may be the way that it's accomplished but i don't like the way that this is going in the in the sense of it's like an edict from on high and engineers are just supposed to salute to this uh bureaucracy that's creating an emissions standard out of whole cloth that doesn't feel right and as you can see as a result of that the aircraft industry as a whole is really suffering and has not been able to get off its feet and it needs to because there's a lot of it's almost like the automotive industry there are a lot of jobs signed up at up in aviation right now yeah yeah and of course um you know the reporting from the ap news explains that only 2.4 million gallons we talked about this in the past as well only 2....

The Gulfstream G700 broke a transatlantic speed record, reaching Mach 0.88 - can they break the sound barrier in the near future? The FAA is investigating Virgin Galactic, asking why they departed from their flight path; they'll be grounded until the answer is satisfactory. And, Archer Aviation just received their G-1 certification, but the ISS nonetheless has issued a warning to investors to decline the intended SPAC merger deal. Will it go through?

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EP69 Transcript

this episode is brought to you by Weather Guard Lightning Tech at Weather Guard we support design engineers and make lightning protection easy you're listening to the struck podcast i'm Dan Blewett i'm Allen Hall and here on struck we talk about everything aviation aerospace engineering and lightning protection welcome back to the struck aerospace engineering podcast i'm your co-host dan blewett on today's episode we're gonna talk about golf stream setting a new transatlantic speed record at 0.88 mach from savannah to katar uh we'll talk about faa and virgin galactic some of their woes ryanair also with boeing and talks to get some 737 max 10s out the door but it looks like those talks might have collapsed in our evt well segments say we've got a bunch about archer the faa has approved a g1 uh certification for them and the iss on the other hand is advising against the arger spac merger so we'll talk about that some big stock news there and lastly uh interesting uh article from the vertical flight society uh explaining that they've taken a directory of what now includes 500 evtol concepts a which is up from 200 from last summer so we'll talk about some of that and what we can expect if maybe all 500 designs will come to fruition um i'm sure Allen has a lot of thoughts on that so first let's talk about golf stream so Allen this is a g700 that reached 675 miles per hour or mach 0.88 on the flight across the atlantic from savannah georgia here in the u.s to qatar and then they also hopped over to paris uh reaching mach 0.90 which is 690 and a half miles per hour so this is pretty fast but i mean how fast is this it's pretty good for a business jet yeah for especially as large as it is i think the cessna citation 10 which was the fastest at the time was like 0.9192 maybe on mach yeah so it it's it's really moving aerodynamically the gulfstream's earthcraft have gotten better and better as it gotten bigger and bigger obviously it takes bigger engines yeah yeah i mean i mean if you're going to have a top-end business aircraft gulfstream is definitely leading the pack at the moment it's beautiful airplane so obviously supersonic flight is a big one um is that just breaking mach 1 like or is it are we really looking like mach 1.5 like companies like the now defunct arion and now boom who are looking in the supersonic jet realm i mean is this not is this not close enough or i mean what's the big difference here well it just takes a lot more fuel to go faster uh and a different kind of aircraft to break this sonic sound barrier gulfstream has pushed the envelope pretty well in terms of subsonic flight the aircraft is very clean and as they as they develop and continue to develop they have better computational models better aerodynamic cfd models for the aircraft so the aircraft keeps getting cleaner and cleaner if you look at a g3 to the g700 it's it's almost a different aircraft in terms of its aerodynamics and its performance i always think it's really interesting when they do these sort of like speech trials or world records on speed because they used to happen the united states quite a bit they would go from the airplanes would go from like new york to los angeles or new york to miami places where the business flyer would frequent right and where the marketplace was and so you try to set a a flight record there so now the flight records are not in the united states the flight records are over in europe and the middle east where their future customers are so you did it to to do those uh speed records where your customer base was so you can always get an indication of where the aircraft's going to be sold because that's where they're doing the speed record trials got it got it so i mean do you see golf streams breaking the sound barrier or would they have to do a whole whole overhaul to get there well gulfstream i think has dabbled in supersonic over the last 10 years there's just been a lot of rumors of that they've looked at it but they've never pulled the trigger on it and i think it as it's a real combination of technology versus the expense and the in the process of getting something certified and gulfstream's not going to waste money they've never been a company to spend money frivolously they're focused on producing a really great product and keeping their customers engaged and and unless there's a great big demand for a supersonic aircraft gulfstream is not even going to pursue it and i i kind of wonder if they have already tapped the potential marketplace for that and realized the number of aircraft they could theoretically sell versus the the amount of money they would generate it's it's just a wash right now or negative and so they haven't pursued it all right moving on um so the faa said the rocket ship carrying uh richard branson and his virgin galactic um space crew essentially or their employees left their air traffic control clearance area as they descended back on their flight on july 11th and so now the faa is saying you know why did this happen and they're looking for answers and banning virgin galactic flights until then so alan what's your take on the situation well isn't it a very weird article and i hadn't seen this article in the united states i think we picked this article up overseas which makes you wonder what is the real behind-the-scenes story but what they're indicating is that as the virgin galactic craft came back down to earth on its glide path back down the earth that the went outside of some enveloped area that the faa has designated for them to fly in but i remember watching that flight and i didn't see anything abnormal about the way that the aircraft came back down to earth and it maybe there was some winds there that forced the aircraft to deviate a little bit based on which way the winds were blowing but maybe they it sounds like they come out of some faa pre-designed box for a minute or two but dan they're out in the middle of desert there's no one else around out there does it really make all that much difference yeah i don't i don't know i mean i know the faa is obviously really strict and they want to make sure there's control i mean is this really just a an incident where they're just concerned about just the lack like more about the plane itself like why would this possibly deviated or i don't know i mean why why would they be making a probe into this if there wasn't something potentially bigger yeah i don't know yeah and as if you're the pilot in command you get to make those decisions right if you're if the safety of the aircraft comes first the faa boundaries come second so it's a little weird that they're not going to let them fly anymore until they get the envelope increased the box increased whatever but it is odd because you would think that the faa would say hey virgin what's going on and virgin would say hey the wind was blowing at 50 knots at 30 000 feet whatever it was and it blew us off course a little bit we corrected we're back in not a big deal can we work out negotiate a bigger box because this is supposed to be a spaceport this is why they're in new mexico because it's a spaceport and there's no one around and while the fa hasn't agreed to that is is odd so there's there may be more behind the story maybe this is just one piece of a bigger bigger problem that they had with that flight it's going to be hard to tell and rarely going to see these things discussed in public until they're settled so i have to keep our eye on this one yeah i mean inversion galactica says it was well you said it was a high altitude wind and that the pilots did what they were supposed to do so yeah it seems like they're they seem like they're taking it seriously but it's kind of like well you know what else what else should we do there like yeah i mean that unexpected things happen in flights um but yeah obviously maybe this is just a different magnitude since it's space and and all that but yeah you're right it's something that we'll probably know more as that story progresses but boeing in in the news cycle here was in talks with ryanair who's obviously one of the bigger low-cost airlines based in ireland and ryanair said that uh they're just too far away from this potential 737 max 10 order and of course ryanair has a has a known reputation for swooping in and looking for discounts on planes obviously last year was a great time to get some of those and they they put in a big uh 737 max order but when they were looking for some of the newer max 10s uh looks like they're just too far away so why is this newsworthy i guess i mean this this seems just like an ordinary like oh yeah i was going to buy a couch and i didn't have the one i want or it was too expensive and so i didn't like why is this really that newsworthy well just because it affects boeing and ryanair stock that's why i mean ryanair has been such a large purchaser of 737s and that's the model that's selling right now and boeing needs to sell a lot of those aircraft it's going to affect the stock price and ryanair is knowledgeable that fact they know if they walk away from the table that boeing stock price could be hurt and may drive them back to the table that's probably one of the reasons why

Raytheon has announced that it will acquire FlightAware, as part of its Collins Aerospace branch - will this pay off? Boeing is under scrutiny by the FAA, again about pressuring engineers - is this valid? And, Archer Aviation is partnering with Reef, a parking garage company, to transform garage roofs into vertiports for their EVTOLs...will it work?

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Dufour has entered the EVTOL arena, with a tiltwing design - can it work? Plus, we discuss Archer going public, cell phone fires, Viasat radome problems on 737s, and more.

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Joby Aviation is now public through their space acquisition deal - what will they now do with the money? Plus. JetBlue is going transatlantic - is this a big deal for the company as they choose Airbus 321LRs for their JFK - Heathrow flights? We also discuss a new folding transwing design EVTOL, continued Boeing Starliner problems and more.

Learn more about Weather Guard StrikeTape segmented lightning diverters and aircraft lightning protection consulting services. Follow the show on YouTube, Twitter, Linkedin and visit us on the web. Have a question we can answer on the show? Email us!