Is there any present technology where a large plane can carry a small plane (or multiple small planes) and drop it midair where the small plane deploys itself? This would be very good from defense point of view, where small fighter jets with limited range could be dropped off by large airplanes with very long range.
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1$\begingroup$ Related answer: Can a fighter jet land on a modified airliner $\endgroup$– Peter KämpfJun 25, 2015 at 10:32
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1$\begingroup$ This might be worth reading: en.wikipedia.org/wiki/Parasite_aircraft $\endgroup$– f470071Jun 26, 2015 at 21:37
7 Answers
If you are talking about externally carrying/deploying other aircraft, this has already been done with the B-52 (albeit for testing purposes) carrying the X-15.
I'm not too sure about having an aircraft drop out of a cargo bay such as the C-130.
On a side note military gliders were used extensively during WW2 and some were capable of carrying light tanks. The gliders were usually towed behind larger bombers to give them the required altitude and speed. They were used because of their wooden construction allowing a stealthy approach due to the reduced radar signature.
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8$\begingroup$ I doubt stealth was the reason. Many gliders were used only once. Wood is light and cheap. Steel would be heavy and aluminum to expensive. $\endgroup$– MSaltersJun 25, 2015 at 12:42
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1$\begingroup$ Both steel and aluminum were also "strategic materials" required for the production of other essential materiel (tanks, ships, guns, field equipment, powered aircraft). The gliders were used primarily because they could get heavier equipment like jeeps and artillery into the field, and also because the ability to glide meant that the C-47 tow craft didn't have to overfly German territory (or at least not as deeply), which protected the more valuable powered planes. Bombers were rarely used as tugs for many reasons, primarily that they were way too valuable for actually delivering ordinance. $\endgroup$– KeithSJun 25, 2015 at 15:48
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1$\begingroup$ Stealth was a benefit of gliders but mainly because of their silence at low level approaching the target. Other reasons to use them included: they only needed to be able ditch safely on rough ground without a care for taking off again (over powered transports landing); were able to offload a unit ready to fight (over powered transports dropping paratroopers); required less training of both pilots and passengers (over paratroopers). $\endgroup$– AvonJun 25, 2015 at 19:10
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1$\begingroup$ Wood was a surprisingly good material for aircraft bodies and wings. Just reference the de Havilland Mosquito fighter bomber, aka the Wooden Wonder,which was surprisingly robust, perhaps more so than similar metal aircraft.Aircrew particularly enjoyed it because opposing machine gun fire went straight through rather than rattling around inside as shrapnel, significantly reducing casualties. Link: en.wikipedia.org/wiki/De_Havilland_Mosquito $\endgroup$ Jun 26, 2015 at 4:42
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$\begingroup$ Stealth technology was not really a subject in WW2 (the Ho-229 being the sole noteable exception). The use of gliders required air superiority (Germany on the Eastern Front, Allies over Normandy), and the very limited range would put the tow craft on the radar anyway. The "antidote" for radar at the time was chaff or active jamming, not avoidance. Gliders were build of (cheap) wood because they were strictly one-way craft. $\endgroup$– DevSolarJul 7, 2015 at 13:08
Parasite aircraft is a concept that has been considered.
During the era of the zeppelins several countries experimented with launching fighter aircraft from airships, mainly as a way to get the fighter crafts to a relevant altitude while conserving fuel. However none of these projects where realized before the end of WWI.
During WWII soviet used Tupolev TB-3's to carry I-16 dive bombers, a culmination of experiments started during the 1930's. Some of Japan's kamikaze crafts where also launched as parasite aircraft.
In an escort role Germany experimented with parasite craft solutions as a way to bypass the very short operational range of rocket powered fighters, but these experiments where ultimately judged unsuitable.
The extreme range of US strategic bombers in late WWII and early cold war lead US to consider parasite fighters as an escort solution. However these attempts where eventually scrapped in favour of aerial refueling, as this was considered a safer option.
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$\begingroup$ Welcome to Aviation SE, Taemyr. Could you please add the gist of the link directly. If links go stale, your answer would lose most of its value as it is. $\endgroup$ Jun 25, 2015 at 10:30
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$\begingroup$ @PeterKämpf Attempted to include the gist of the article. $\endgroup$– TaemyrJun 25, 2015 at 11:17
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$\begingroup$ It's worth noting that, today, the escort fighter is obsolete. Today, we use cruise missiles, fighter-bombers and/or stealth, depending on the circumstances. A bomber that would require escort in a defenced airspace, such as a B-52, is only used once air superiority is achieved so no escort is needed. $\endgroup$ Jun 25, 2015 at 20:44
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$\begingroup$ @Vladimir At least in US practice, there are no nuclear bombs dropped by non-stealth bombers. US B-52s just use cruise missiles; bombs are only used on fighter-bombers and B-2s. $\endgroup$– cpastJun 26, 2015 at 17:10
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$\begingroup$ @VladimirF The nuclear bomber is largely obsolete; it's vulnerable on the ground and hard to get to the target. The retaliatory strike comes from submarines. $\endgroup$ Jun 26, 2015 at 18:22
small fighter jets with limited range could be dropped off by large airplanes with very long range
That sounds like a one-way mission.
Some Zeppelins and some US Navy airships did carry small aircraft that could be both launched and, importantly from the pilot's perspective, recovered in mid-air.
However in the modern world, the approach you describe is not used.
If fighters are needed beyond normal operational range of their bases, air forces will either use in-flight refuelling or create a forward operating base nearer the mission target. Aircraft carriers are a popular solution to this requirement, if adequate time is available.
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1$\begingroup$ +1 for mentioning that it's usually desired to get the fighters back home at some point. $\endgroup$– reirabJun 25, 2015 at 20:05
Since your question is about the tech, it very much does exist in a few forms at least for aircraft of varying size.
The Bell X-1 (the plane that broke the sound barrier) was a mid flight deploy from a B-29. This was a result of its low fuel load it could not really get its self off the ground and then have enough fuel to break the sound barrier.
This became common for a lot of the high speed test crafts developed over the years. Up through the X-15 (the fastest thing out there)
The first space shuttle tests were done by flying the shuttle to altitude on a modified 747 and deploying it for an unpowered decent so the tech is there even for large craft.
The more modern Space Ship One also uses this configuration to get it to altitude easier.
The tech is there and has been used over the years. Now to the more realistic question "would you do it" most likely no. As you mentioned there is a case for small limited range planes being deployed at distance but the simpler solution to that is a mid-air refuel. This accomplishes the range extension and allows the plane to get back home. The other option is a drop tank which also extends the range of a plane.
Note: Another kinda of cool solution to the problem was to weld 2 planes into one like the North American F-82 Twin Mustang.
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$\begingroup$ Also, it's not unknown to tow a sailplane from one airport to within gliding distance of another. $\endgroup$– jamesqfJun 25, 2015 at 23:09
This would be very good from defense point of view, where small fighter jets with limited range could be dropped off by large airplanes with very long range.
Parasite aircraft as a way of increasing the range of fighters has been tried repeatedly, with everything from airships to heavy bombers as the mothership. It turns out to be much harder than it sounds, and has generally been abandoned in favor of dedicated tankers and mid-air refueling.
Germany had some (very) limited success in WWII with the Mistel concept, which is basically the opposite of what you mentioned:
The smaller of two craft was the piloted one, the bigger craft being an explosive-carrying drone -- like a really big glide bomb. The most common combination was a Fw-190 figher/bomber carrying a Ju-88 drone.
where a large plane can carry a small plane (or multiple small planes) and drop it midair where the small plane deploys itself
In addition to those concepts, let us not forget the Goodyear Inflatoplane, which was designed specifically to be dropped from aircraft, inflated, and flown away.
Designed for pilot rescue, the idea of dropping an aircraft in and flying it out was revealed to be ultimately impossible when one considers pilots in a Vietnam jungle.