Other than the one known remaining (copy of the) photo, supposedly the best of the "UFO" -the one sent to Craig Lindsay- our knowledge of what was claimed to have been seen is limited to (1) the second- or third-hand summary in the National Archives,
post #70, "Claim: Original Calvine UFO Photo" thread,
and (2) the recollection of a 'phone call by Craig Lindsay.
Someone at
The Daily Record must have spoken with the claimants, probably the late picture editor Andy Allen who spoke with news editor Malcolm Speed:
External Quote:
'Later when I returned from holiday and quizzed Andy about the photographs he told me he had sent them to the RAF who had told them they were fakes.
'I was surprised he sent them to the RAF before they were published, especially given issues such as copyright and ownership.
'Andy was very reluctant to talk about the photographs and said he had given his word to the photographers to protect their identity. I was never told their names.
Malcolm Speed quoted by David Clarke on his website, 23 October 2022
https://drdavidclarke.co.uk/2022/10/23/the-calvine-photographs-mod-response-to-mps-questions/, my emphasis.
But other than the claim by Speed that the RAF told Allen that the photos were fakes- a second-hand and hard to corroborate, but perhaps not trivial detail- we have very little additional information from whoever at
The Daily Record spoke with the claimants.
It seems likely David Clarke and Nick Pope were reliant on these sources too- the one photo, the Sec (AS) 2a documents now in the UK National Archives and Lindsay's recollections.
Craig Lindsay has been honest in stating that his recall isn't 100% (nor should we expect it to be)
In the podcast, Clarke played the interview with Lindsay where he attempts to recall what the witness told him when he called the hotel in 1990. What Lindsay actually says: "... and that as far as their trip out that night was: uh, they parked the car, they went - [sighs] what, he couldn't - I can't remember now whether he said it was a long distance, I don't think it was terribly far but, the bits that I do remember was...
So we have a large diamond-shaped UFO that hovered for about 10 minutes before ascending "at high speed" .
And that's it. From a claimant or claimants who didn't want to be identified and who have never come forward. There were no other witnesses.
Estimates of time are notoriously difficult in stressful situations, but 10 minutes must rule out a fleeting glance and perhaps a short duration sighting of 1 minute or so. Long enough to see if the UFO was moving or not, even if it were moving directly towards/ away from the claimants -this is a (claimed) structured object, not an aircraft landing light which can give the impression of hovering for two or three minutes if it moves towards an observer.
As
@Andreas discussed in
post #46, it's unclear if the claimants said the UFO made any sound at any time,
Pope says the witnesses "became aware of a low humming sound" and then turned to see the object (now generally described as being silent)
In Clark's Daily Mail article, he says it happened this way:
External Quote:
...They hadn't gone far when they saw a huge, solid, diamond-shaped object... ...hovering silently in the sky above them.
Where Pope gets the humming report from isn't clear. Maybe Clarke's "hovering silently" comes from his discussions with Lindsay.
But it is perhaps likely the original claim narrative did
not refer to the UFO making a loud noise, as might be expected from vectored jets/ rocket motors/ helicopter-type engines and rotors. Small contemporary drones can have relatively quiet electric motors, but larger drones/ powered aircraft in 1990 would probably have needed a hydrocarbon-burning engine of some type.
As others have pointed out, it seems unlikely a secret prototype or service aircraft would be flown near the location of the Calvine sighting.
We don't know of any actual aircraft (or
realistic proposals) that resembled the Calvine UFO in 1990 in shape
and claimed flight characteristics (hovering, rapid vertical flight). Nor has anything similar been revealed in the ensuing 36 years.
There have been some proposed candidates in terms of shape,
Lockheed had an original design called the "hopeless diamond"
From some angles the "Hopeless Diamond"
concept might resemble the Calvine UFO,
...but it never flew. It was never built as a viable aircraft.
The above pictures are artwork for a scale model hobby kit,
https://www.unicraft.biz/on/hd/hd.htm.
"Hopeless Diamond" was the nickname for development that progressed through to two flying prototypes, Have Blue...
...which led to the F-117 (Wikipedia Lockheed
Have Blue,
https://en.wikipedia.org/wiki/Lockheed_Have_Blue
Tailplanes produce drag, and are surfaces that might reflect radar. Had there been a successfully-flying Hopeless Diamond without tailplanes, it would make sense for that feature to be preserved in later development: And there's a reason why the uncharacteristically negative nickname "Hopeless Diamond" came about:
External Quote:
Project Harvey, an initiative to develop a radar-undetectable aircraft, was followed by
a tailless rhomboid design, quickly renamed the Hopeless Diamond when Lockheed engineers discovered that while it was truly stealthy, it was uncontrollable in flight. This drawing shows the outboard wings and single tail that were tacked on to improve stability. The Harvey studies evolved into Lockheed's Have Blue stealth demonstrator, the direct precursor to the F-117.
Smithsonian Magazine, August 2014, "Secrets of the Skunk Works", Chad Slattery
https://www.smithsonianmag.com/air-space-magazine/secrets-skunk-works-180952122/ (my emphasis). (Note engineers, not pilots, realised "it was uncontrollable in flight").
Unrelated, a sort-of rhomboid aircraft concept has cropped up from the pages of
Popular Mechanics (
post #169, Original Calvine UFO thread) and
Aviation Week & Space Technology, 24 Dec 1990
(post #186) magazines. It would not have been capable of hovering.
A copy of one of the articles was in the Sec (AS) 2a documents released to the National Archives (maybe implying "the UFO desk" probably wasn't privy to particularly sensitive MoD-held information about aircraft development).
This design would supposedly use
externally-ignited fuel for hypersonic flight, something no real-world aircraft has demonstrated AFAIK. Lots of missile-attracting IR. And this would be large, it carries
121 nuclear bombs. Which are ejected by springs or something similar.
It is hard to understand why the magazine editors took this monster seriously.
The drawings are by the late Mark McCandlish, an aviation artist known for believing conspiracy theories (
post #172, Original Calvine thread).
I don't know if this has any bearing on the articles (the AW&ST one was credited to William B. Scott).
There is no evidence I'm aware of that this concept was ever seriously considered by anyone in a position to fund meaningful development.
Some US aerospace manufacturers have proposed extravagant and probably impractical designs in the past, where the major design work seems to have been done by an artist told to paint something spectacular.
There are some examples in
Future Fighters and Combat Aircraft, Bill Gunston, 1994, Salamander Books, viewable on Scribd
[Edited to add: issues with direct link, please use URL (below) if interested, item is top of page, uploaded by user Stotza 18 August 2012]
https://www.scribd.com/search?query=Bill Gunston - An Illustrated Guide To Future Fighters and Combat Aircraft (1984)
...including (under "Lockheed-California Projects") this flying airbase, estimated mass 3000 tons. Those are fighter jets under the wings, not missiles.
So even if a major aerospace manufacturer proposes a concept, it would seem there's no guarantee that the concept is realistic (or feasible, or even desirable), and I strongly suspect the
AW&ST rhomboid comes into that category (
if it has its origins with such a manufacturer).
Nothing like the rhomboid and its spring-loaded arsenal was seen near Calvine, or anywhere else.
I don't think an F-117 or any other known aircraft of 1990, or before or since, can account for the shape in the Calvine photo.
Proposed aircraft of similar-ish "diamond" shape have not flown as far as we know; and proposed aircraft are not always practical; many lead nowhere.
If we assume the claimed Calvine UFO was of substantial size as reported- say, the size of a modest fighter jet/ medium helicopter or larger- and was a heavier-than-air machine, it has characteristics that make it unique:
(1) Apparent shape (though we only see it from one angle, and surface details are at best indistinct). It doesn't seem to have wings or rotors.
It would have to rely on downward thrust alone to stay aloft, we can build aircraft that do this but it guzzles fuel and is loud.
(2) Quietness. Quiet engines able to lift a substantial load would be immensely useful to both military and civil operators.
We don't see these characteristics in any known aircraft of this approximate scale, then or now. They are, however, common in UFO lore.
Depending on what "ascending at high speed" means, a lighter-than-air craft might have problems with
rapid vertical flight from an apparent hover. Presumably a means of propulsion would be necessary (if it moves faster than its buoyancy would cause), which might be noisy.
In
post #35, "4k UFOs Video" in the Serra do Rio Rastro..." thread, a number of modest-sized disc-shaped/ spherical drones were mentioned,
but if the Calvine UFO were a small drone/ RC aircraft- perhaps with a ducted fan and intakes/ exhaust conformal with its visible shape, or somehow hidden by louvres- it must have been reasonably close to the claimant(s).
The small/near vs. big/ far away problem is a regular feature of UFO reports, but I'm not sure that the claimant(s) making this sort of mistake is likely in this case. If a small drone were close enough to be mistaken as a much larger object, wouldn't its motor be audible?
We have several examples of strangely-shaped recce drones/ RC helicopters etc. from this era (and earlier), they're not secret so why would this one be?
Plus, a modest drone is unlikely to require a chase aircraft, and yet again there's the issue of why test it
there?
It must be very unlikely the Calvine photo and account describe a chance sighting of a secret human-made aircraft, that has remained secret for 36 years.