Search Results : Flying boomers

Sep 252011
 

A few photos of a McDonnell-Douglas display model of a DC-10 modified to launch a pair of MX (or MX-like) ICBMs. The missiles are held in pneumatic tubes, with a high pressure gas system near the nose of each missile; clearly, the missiles would not be simply slid out the back, but rather *shot* out the back with some authority. While the photos do not show the underside of the aft fuselage, clearly there has been some major modification to the design there. Less obvious is a change to the outer moldline of the upper fuselage… “bumps” are added to provide sufficient clearance for the angled missile tubes.

 Posted by at 3:52 pm
Sep 132011
 

A Boeing painting depicting a 747 in the process of launching an MX-style ICBM. The total load was at least four such missiles. No further data than the artwork. A “bridge”-like cradle would go fore and aft carrying missiles and dropping them out a large hatch in the underside of the rear fuselage. Speculation: controlling the aircraft during the rather sudden shift in CG would have been interesting.

 Posted by at 9:50 pm
Sep 032011
 

A 1984 General Dynamics patent for a system to turn jetliners such as the DC-10 or L-1011 into missile launchers with minimal modification. The end result could be aircraft that would be visually identical to a commercial jetliner when readied.

The actual missiles intended are not named, but are clearly small… 10 inches diameter by 180 inches long. Many racks of them would be stored in the emptied-out passenger compartment, angled to fire forward and upward through ports in a replacement passenger compartment door. The launch rack would index forward to position missiles in launch position; launch rate would be one per second per side. 28 missiles could be fired from either side of the aircraft, for a total of 56. Presumably these would be some form of narrow-bodied cruise missile. Missiles up to 20 inches diameter and 20 feet long could also be loaded, but they would only be able to be fired from one side of the aircraft.

 Posted by at 10:48 pm
Sep 012011
 

Another take on the idea of launching an ICBM from a large jet aircraft: shoot it out the nose.

Patented in 1977, this concept from Lockheed would involved firing a Minuteman-style ICBM through a single launch tube out the nose of a C-5 Galaxy cargo plane. Better still, within the cargo bay would be a rotary structure holding four ICBMs, much like the cylinder of a good old fashioned revolver. The bottom-most missile would be fired through the “barrel” by means of a high pressure gas charge; the cylinder would then rotate the next missile into place for firing.

Missile launcher for aircraft

All in all, this seems like one of the goofier concepts for an airborne ICBM launcher. The potential for catastrophic failures seems fairly large.

 Posted by at 5:44 pm
Aug 252011
 

A substantially less crazy-sounding idea than jetliners launching large missiles vertically, in the late 1970’s Boeing (and others) studied the use of cargo jets to carry and launch large numbers of cruise missiles.

The Carter years, for you younguns who don’t remember back that far – and for you old farts old enough to have experienced the 1970’s and managed to repress memories of that dark time – were a time of economic despair, lost jobs, industries in decline and a space program that had been basically shut down. The President was swept into office on the promise of repairing a broken nation dealing with major internal divisions, troubles in the Middle East and skyrocketing oil prices.The President, rather than bringing the nation together, turned out to be rather an incompetent boob, creating *more* division and basically mangling both the economy and foreign policy. Let us hope such times do not come again…

The 1970’s actually did look like this.

Anyway: it was a time when expensive new defense procurements were in massive doubt, the anti-nuke nuts were running rampant and the aviation industry didn’t see much in the future.  But still the Soviet Union was lurking just over the horizon, so a need was seen to modernize the nuclear delivery force… on a budget.  President Carters cancellation of the B-1 bomber left the US without a new manned strategic nuclear delivery system; without the B-1, all the US had was the B-52 which was starting to appear rather old and obsolete (as opposed to today, when they are two or three times as old as they were then…).

Boeing put forward the idea of using 747 cargo conversions for mass cruise missile attacks. Rotary launch racks would be carried internally in the spacious cargo bay…  nine racks each holding eight ALCM’s gave a respectable loading of 72 cruise missiles, each potentially armed with a single nuclear warhead. There was a single launch port on the starboard side of the aft fuselage. The rack next to the port would eject a single missile sideways through the port, rotate the next missile into place, and then launch it. When all eight missile had been launched, the rack would slide to the left; another rack would slide aft into the position just vacated. When *that* rack was empty, the first rack would slide forward, giving room for the second rack to slide sideways, and a third rack to slide aft into position. In this way, nine racks could be carried and moved into position. It would be somewhat cumbersome, and certainly a slower process than unloading the equivalent rotary racks that the B-1A would have carried internally… but then, the B-1 could only carry three such racks.

Boeing filed for a patent on the concept in 1978 and received it in 1980.

“Missile Carrier Airplane,” US patent 4,208,949

This would have been a far easier design to bring to fruition than the BAE vertical launch concept, and would probably have had a greater total load of nuclear whoopass. However, it falls short in the all-important coolness factor, and would have been useless in the micro-satellite launch business or anti-missile duty. Since the cruise missiles, jetliners and rotary racks described thirty years ago (yeeeeesh) are still available and essentially top of the line, the concept would seem to remain valid. In recent years Boeing has discussed in somewhat vague terms the “arsenal plane” concept, where a relatively large and slow aircraft would be loaded to the gills with offensive weaponry. While their artwork has tended to show some sort of blended wing body in that role, the 747 would still be a potential candidate.

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 Posted by at 11:24 pm
Aug 192011
 

Sometimes you see stuff that makes you sad… not because the thing itself is sad, but because you can’t legally say jack about it. Well, back when I worked at ATK I stumbled across some Powerpoint presentations on a joint ATK/BAE concept, and due to the interesting notations on the pages I felt it safest to not say a thing. BAE patented the concept a few years ago with all manner of nifty diagrams, so.. restriction lifted, I guess.

The concept? Flying ICBM launcher. This is not a new idea… the Skybolt ICBM was flying around under the wings of several bombers back in the 1960’s, and both the Minuteman and Peacekeeper ICBMs were proposed to be made air mobile at various times… typically by the relatively simple expedient of carrying them in cargo planes and shoving them out the back door. But what sets this concept apart is that the ICBMs are carried *vertically* in silos, just like on ballistic missile submarines. But here there is no compressed gas charge to blow them out; they come out hot.

The first obvious problem with the concept is that, unlike a submarine, a jet aircraft at 40,000 feet is hardly likely to just stop… thus the missile will have some pretty substantial side forces on it as it comes out, to the tune of a 500+ mile per hour air blast. Anyone who has ever tried to launch a model rocket in a stiff breeze has probably noticed the concept of “tipping force:” when the rocket is only partly exposed, the wind blowing on the front of it tries to blow it over sideways. But BAE seems to think they’ve got the problem licked: by redirecting some of the exhaust gasses into a plume firing out the top of the aircraft and just ahead of the rocket, the air flow should be diverted around the missile long enough for it to clear the silo. A neat idea… I’d love to see some full scale testing!

The second obvious concern is that aircraft skins and structures *really* don’t like having big rocket motors blasting away at them from ranges of a few feet. BAE has a solution to that, too: a short-burn, high-thrust rocket motor capable of chucking the missile into the air, but fast-burning enough so that it burns out before it actually clears the tube. The missile would then coast upwards until it was clear of the aircraft, stage off the booster, then fire up its first *real* stage and continue on its merry way.

BAE suggests that the missiles can be used for a number of roles:

1: micro-satellite launching (but who’d need to ripple-fire dozens of small satellites?)

2: Missile defense

3: Prompt strike.

In the last role, one concept described is a 747 carrying 32 or more missiles, each missile capable of launching a 2000-pound JDAM weapon a range of 500 or more miles.

The patents:

Air based vertical launch ballistic missile defense 7540227

Air-based vertical launch ballistic missile defense 7849778

Thought is given in the patent to angling the tubes forward.

When I saw the presentations at ATK, I was uncertain as to the breakdown of who was to do what. But it now seems pretty clear to me that the idea as a whole was BAE’s, and ATK was pitching rocket concepts to BAE to fit their aircraft boomer. Whether ATK got the job or if it went to someone else, or if the whole idea just dried up and blew away, I have no data. The concept dates back at least 6 years, to 2005 or earlier. It got a smidgeon of press, then pretty much vanished. In all probability it really did vanish. But who knows…

NOTE: If you like aerospace history posts like this, then you’ll go out of your mind when you read Aerospace Projects Review. Go take a look.

 Posted by at 11:19 pm