Patrick Chovanec Profile picture
Jul 12, 2021 34 tweets 11 min read Read on X
Today in MSFS I'm checking out a rather odd bird called the EA-7 Edgley Optica, and I'm doing it at the location where it was developed, Old Sarum Airfield near Salisbury in southwest England.
The Optica is the brainchild of British designer John Edgley, who envisioned it in the 1970s as a slow-flying alternative for many tasks now performed by helicopters.
The cockpit, which stretches forward of the powerplant and wings, gives the occupants clear 270-degree visibility much like a helicopter.
Behind the cockpit is a 6-cylinder 260hp engine - similar but larger than the 4-cylinder 180hp kind found in a Cessna 172 - that turns a large but relatively quiet fan.
Everything about this aircraft is a bit unusual, including its tail and dual rudders.
People who've seen an Edgley Optica often compare it to a bug or a dragonfly.
Inside, the cockpit layout really looks like that of a helicopter - though the instruments and controls are, in fact, those of a conventional airplane.
The fan isn't adjustable, so there's no blue lever, just a throttle and a mixture control, along with the trim, flaps, and fuel cutoffs. Since these are all on the right, if you're sitting in the main pilot's seat, you hold the stick with your left hand.
Here's the view of the fan behind us, with the first aid kit just in case.
Front and overhead is a magnetic compass, a clock, a weight-and-balance warning system, and a fire extinguisher.
I've taxied out the grass runway at Old Sarum and am ready to take off.
Both the takeoff and landing speed is just shy of 60 knots. Just as I take off, the hilltop ruins of Old Sarum itself come into view, straight ahead.
Old Sarum was an Iron Age hill fort, which later became a town and castle in the Middle Ages. @BradleySeanF and I rummaged around here one time, when I was living in London.
Here's what Old Sarum looked like in its heyday. It even had its own cathedral and bishop.
From higher up you can clearly see the outline of the settlement, including the foundations of the cathedral and castle. You can also see the grass airfield to the east (right).
In the early 1200s, the confined space and lack of water caused the bishop to relocate the cathedral to the plain a short distance south - which became the town of Salisbury.
The spire of Salisbury Cathedral is 404 feet tall, making it the tallest church in the United Kingdom. It is also home to the best preserved of the four copies of the Magna Carta.
Old Sarum, just to its north, withered into ruins - but, notoriously, its handful of residents retained a seat in Parliament, making it a prime example of what was called a "rotten borough".
Until the reapportionment of seats by population in the 19th Century, seats like Old Sarum could be easily controlled by corruption, while up and coming cities like Manchester had barely any representation in Parliament.
Looking out on Old Sarum, to the right, it does feel like you're in a helicopter, not a plane.
The Edgley Optica first flew in 1979, and at first things looked promising, with British law enforcement interested in using it for surveillance and traffic. The plane can loiter around 70 knots for up to 8 hours, and is relatively quiet, making it ideal for such roles.
But in 1985, a local police department had a crash, killing the pilot and a photographer. Although the accident was attributed to pilot error (too steep a bank, causing it to stall), the project itself came to a stall.
Only 22 Opticas were built, and 10 of them were destroyed in a fire. The company went bankrupt, and went through a string of new investors who tried to restart the project.
We're north of Salibury now, along the River Avon, approaching Amesbury and keeping our eyes out for an even more famous ancient monument. (Yes, I know I left all my lights off on takeoff and I'm sorry about that).
There it is: Stonehenge. @BradleySeanF and I once tried to walk from Old Sarum to Stonehenge and it was longer than we thought. We ended up flagging down a bus on a country road, but we made it.
Now these steep turns over Stonehenge offer an awesome view, but I can see how the Optica crashed during such a turn.
The loiter speed in 70 knots, and the stall speed with flaps up is 58. That doesn't leave much room for error. You pitch up or throttle down just a bit too much, and that stall warning starts going off. You can adjust, but not if you're distracted by sightseeing.
From what I could tell, the Optica performed best when it was slow, straight, and level. You have to take your time with gentle turns. That makes it great from some helicopter roles (surveillance, seaching) but tricky for others (photography, sightseeing).
And when I came in for a landing, at the nearby RAF base at Boscombe Down, it felt more like hovering in on a helicopter than the straight and steady approach of an airplane. It didn't help that I had a crosswind.
Apparently a new set of investors have bought the rights to the Optica, brought back John Edgley, and have been trying to relaunch the aircraft in the past few years.
Perhaps they're clever to get it onto MSFS, where a broader audience can give it a whirl and see what this dragonfly-looking aircraft is all about.
Here is an interview with John Edgley:
And here is the new company's website: optica.co.uk/index2.html
Btw, the Optica has fixed landing gear. I didn’t forget to raise them!

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Patrick Chovanec

Patrick Chovanec Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @prchovanec

Nov 7, 2024
I no longer feel like I belong in this country. On a deeply personal level, its values are no longer my values, as they once were. My persistence in it feels increasingly strange and unwelcome.
This is not some angry declaration. The feeling perplexes me, more than anything else.
I say this as someone who served in the military, worked in politics, and spoke proudly and fondly of our country while living abroad.
Read 5 tweets
Nov 6, 2024
Well, so it has come to pass. I cannot say I am surprised, because I did see it coming, but it is saddening nonetheless. I will not say much, because I don't trust myself to. But I do think this nation has made a grave mistake. How grave, we shall only learn in time.
This is not the country that I spent a lifetime, at home and abroad, loving and defending. It is something else, and what exactly that means for me I cannot yet say.
I'm cautious about sayihg what I really feel right now, especially on this platform, because I know it would be mocked. And that, itself, is a symptom of what I see, the glee that many now take in other Americans' sadness and fear. We are remaking ourselves in his image.
Read 5 tweets
Oct 29, 2024
Then you're a fool. We have a democratic republic. I've been a limited-government conservative Republican my whole life. In fact, some of my major criticisms of Trump are that he is too much a big-government interventionist in the economy.
This inanity about "the US is not a democracy, it's a republic" is getting way too prevalent. The US has a republican form of government - as does China and North Korea. Unlike them, it is democratic in that it derives its authority from the consent of the governed.
"The US is not a democracy, it's a republic" is a line that comes from the old John Birch Society (which was drummed out of the mainstream Republican Party because of its extreme conspiratorial views) based on a very ignorant reading of how the Founders used the term democracy.
Read 6 tweets
Oct 25, 2024
If Musk tried to withhold Starlink services to aid a Chinese invasion of Taiwan, our Defense Dept should sit him down and tell him he going to restore it or the U.S. government is appropriating the company in the interests of national security. Full stop.
I’m usually for the U.S. government taking a hands-off approach to business, but we’re talking about a wartime scenario that would almost certainly involve the U.S. in a peer-to-peer conflict and there’d be no room for fooling around.
And quite frankly if he was having conversations with any adversary country about it that would be very problematic in and of itself.
Read 6 tweets
Sep 11, 2024
1. There are times when a thread makes so many important mistakes and feeds into so many misconceptions that it's worthwhile to address it point by point. My apologies.
2. It is true that Trump's tariffs against China were ostensibly imposed for the purpose of forcing China to alter it own unfair trade practices - in large part because the President's legal authority to levy special tariffs requires him to cite this as the reason.
3. However, it was unclear from the start what the "ask" was from China - what exactly the Trump Admin wanted China to do that would allow the tariffs to be lifted. And Trump repeatedly talked about tariffs being good and beneficial in their own right.
Read 20 tweets
Jul 27, 2024
This is a fundamental misunderstanding of the problem. As someone who used to analyze and “summarize” these bills for Congress, let me explain …
The reason the bills are “mammoth” is that they includes hundreds, even thousands of legislative changes on a wide variety of unrelated topics. Basically a “bill of bills”.
Where AI could help us by offering some context to what these often small changes actually mean, in terms of policy. Often it’s hard to understand what changing “and” to “or” in Clause 81 of Title II refers to or the impact it could have.
Read 6 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us!

:(