JB-1 Bat refers to the first rocket, created under the program «JB». Design began in July 44-year and assigned to the new product the official index - the MX-543. "Northrop" offered to design a flying bomb with a mounted turbojet engine with the ability to deliver two 900-kilogram bombs on a major race.
But at that time there was a problem because of the lack of information on the management of aircraft "flying wing". As a result, engineers from "Northrop" designed and built a manned glider pilot, the main purpose of which is to working out the dynamics of the elements. In the course of the research it was found that the sample with respect to manned accurately simulate the dynamics of the future JB-1. In August this year, the glider has completed numerous test flights, and especially his appearance led to getting the nickname "Bat» (Bat).
When all the details were worked out the dynamics of a glider, the designers of the company began work on the creation of a full-fledged cruise missile. BA JB-1 Bat had a big broad wings in 9 m. The unit will start flying through jet engine General Electric B1. On board they were installed in the number 2 pcs., Who lived on air, located in the bow of the central air intake.
Launch rocket was planned using a rocket sled that can be dispersed on 150-meter ramp. According to initial calculations, the missile has the speed of flight in 727 km / h with a range in 1080 km. Its main task is to deliver to the place of discharge of the two pound bombs 900-which were installed in streamlined blisters on both sides of the inlet.
By year end, the rocket put to the test. Its first flight was realized 28 of December and ended unsuccessfully as a missile fell from the guides, started to decline and broke three hundred meters from the launcher. There was an examination of the accident. It showed that the reason for the failure was his mistake when installing the ailerons. Also negatively affected improper engine performance. All this has affected the further fate of the drone. In February 45-year development of JB-1 Bat covered, and all the resources and time have been spent on more advanced UAVs JB-10.
But the closure of the project did not affect the interests of the US Air Force to the idea of constructing a cruise missile, which was to not only match, but surpass the German rocket production of the V-1. After a bad start JB-1 Bat developers have begun to pay more attention to the production of various propulsion systems. That failure JB-1 was completely linked to inadequate performance jet engines was undeniable.
In late February 45-year company Northrop proposed to operate a new cruise missile for air-breathing engine pulsating "Ford» PJ31-F-1. Cheap, simple and relatively powerful engine could solve most of the technical challenges posed by the new rocket. Thus, the company was planning to re-create the project.
She decided to index as the JB-10. She had a relatively big difference with the original version, especially because of the longitudinally extending axis of the engine. He was inside the fuselage, which meant an additional installation of the annular air intake - increase cooling. The idea of hanging bombs under the wing was rejected. Instead she decided to take themselves wings, and are integrated in 800-killogramovye with explosive charges.
The first new rocket lifted into the air in the spring of the same year. Its guidance system was very primitive. Launched rocket flew on direct course. The operator had pre-count time to dive missile to the target. The same system was and the V-1, which limited the JB-10 in the application only targets large areal. But unlike the German American development had increased the speed of flight, about 685 km per hour, which in turn made it difficult to intercept.
USAF hoped to use unmanned systems for the invasion of Japan, but the tests JB-10 greatly delayed because needed more upgrades and dovodok (from 10 2 only launches were successful). The project was closed and being unfulfilled because of World War II.
JB-1 (JB-10). Characteristics:
|The diameter of the rotor, m||8.63||7.95|
|Wing area, m2||14.40||15.14|
|engine's type||1 turbojets General Electric B1||1 ramjet Ford PJ31-F-1|
|Thrust, kgf||X 1 180||1 410 x|
|Maximum speed km / h||645||690|
|Flight distance, km||1078||322|
|Practical ceiling, m|
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