Kawasaki Ki-102 "Randy" radar system

[T-50]

dear people who can tell me what for radar system the Kawasaki ki-102 Randy was equipped with.
I know this plane has a radar but I believe it was not placed in the nose of this Fighter because it possessed a very heavy cannon.
my question is where was it placed and what for type radar was it,further was it equipped with a parabolic configuration antenna?
Ill hope someone can help me with this.

 

[windswords]

Just to clarify, the Ki-102 came in 3 distinct versions: the Ki-102 Ko (Ki-102a) a high-altitude fighter armed with 2 forward firing 20mm cannons and 1 37mm cannon and powered by turbo-supercharged engines; the Ki-102 Otsu (Ki-102b) the ground-attack version armed with 2 forward firing 20mm cannons and 1 57mm cannon and a rear-ward facing 12.7mm machine gun; and the Ki-102 Hei (Ki-102c) the night-fighter version with an elongated fuselage, wider wingspan, and the same turbo-supercharged engines as the Ki-102a. The radar was under a plexiglass dome behind the cockpit, and the armament consisted of 2 forward firing 30mm cannons and 2 20mm cannons in a schräge musik configuration. The first two versions were produced in limited numbers but the Ki-102c was a prototype with only 2 being built.

Since you asked about the radar, you are referring to the prototype Ki-102c variant. I have not found any mention of the type of radar that was to be used for this aircraft.

 

[windswords]

Ki-102c layout

 

[Jemiba]

... The radar was under a plexiglass dome behind the cockpit, ...

Seems to me, that it was more a kind of radar gun sight, than an AI-radar.

 

[windswords]

After posting the 2nd image I am confused. One source I have says the radar was under the dome but the image shows a radar operator's head poking out of it! Why not put the radar operator behind the pilot like the Ki-102b version? But all the sources say that the c version was to have radar. So, was it in the nose or somewhere else?

 

[blackkite]

dear people who can tell me what for radar system the Kawasaki ki-102 Randy was equipped with.
I know this plane has a radar but I believe it was not placed in the nose of this Fighter because it possessed a very heavy cannon.
my question is where was it placed and what for type radar was it,further was it equipped with a parabolic configuration antenna?
Ill hope someone can help me with this.

Hi! Taki 2-go（タキ２号） and Taki 15-go.
Sourec ; All the Experimental Aircraft in Japanese Army, page 92, ISBN978-4-87357-233-8

タキ２号
敗戦の年の１９４５年に射撃制御用の タキ２号 が完成する。周波数375MHz，大型航空機探知距離3km、重量120kg、屠龍に搭載、住友通信。
Taki No.2
In defeat, 1945 to complete Taki No.2 for fire control. 375 MHz frequency, large aircraft detection distance 3 km, weight 120 kg, mounted on Toryu and maker was Sumitomo communications.

http://www.secretprojects.co.uk/forum/index.php/topic,14964.msg150280.html#msg150280

 

[blackkite]

タキ15号1型諸元
用途: 電波誘導装置機上部
受信周波数: 184MHz
送信周波数: 175MHz
繰返周波数: 1,000Hz
パルス幅: 5μsec
尖頭出力: 100w
送信機構成: 発振T-304( P.P.)
変調方式: パルス変調、変調管PH-1
空中線: 1/4λ垂直型、送受兼用
受信機: スーパーヘテロダイン方式、混合(UN-954)、局部発振(UN-955)、中間周波増幅4段(RH-2 x4)、検波(RH-2)、低周波増幅(RH-1)
中間周波数: 10MHz
帯域幅: 1.5MHz
利得: 100db
電源: 回転式直流変圧器、入力27V
総重量: 25Kg
製造: 東芝

Taki 15 No. 1-specifications
Applications: radio induction apparatus on board,
Receiving frequency: 184 MHz
Transmission frequency: 175 MHz
Cyclic repetition frequency: 1,000 Hz
Pulse width: 5 sec
Peak output: 100 w
Transmitter configuration: oscillator T-304 (P. P.)
Modulation method: pulse modulation, modulator tube pH-1
Aerials: 1 / 4 λ vertical type, power transmission and for
Receiver: superheterodyne, mixed (UN-954), local oscillator (UN-955), intermediate-frequency amplifier 4-(RH-2 x 4), detection (RH-2), low-frequency amplifier (RH-1)
Intermediate frequency: 10 MHz
Bandwidth: 1.5 MHz
Gain: 100 db
Power supply: Rotary DC transformer, input 27 V
Total weight: 25 Kg
Manufacturer: Toshiba
Source
http://www.yokohamaradiomuseum.com/cgi-bin/imgboard.cgi?bbsaction=disp_rep_form&amode=&page=1&blood=20090602143943&parent=5741

 

[T-50]

thank you all for this very usefull information!

 

[blackkite]

Not at all. Please do not hesitate to ask me if you have any question.

 

[blackkite]

You can see Ki-102 Hei（丙） specification bottom of this site.
http://memolog.blog.naver.com/PostView.nhn?blogId=naljava69&currentPage=1&from=postList&listtype=0&logNo=60108190876&viewDate=

 

[Jemiba]

If not installed outside of the fuselage, it seems to have been standard practice in Japan to use
perspex as cover, but i wouldn't be too surprised, if this isn't recognisable on a 3-view. Apart from
just being forgotten by the draughtsman, another reason could be, that it was simply painted
over. Some paint probably won't worsen the dielectric characteristics of perspex.

... Why not put the radar operator behind the pilot like the Ki-102b version?

The de Havilland Sea Hornet NF.21 comes to my mind, where the same arrangement was used.
I would suppose, that it was done to keep the CG in the right place. On the internal arrangement
drawing, it looks as if a fuel tank is located just behind the pilot, very near to the CG ? Putting it
further back so maybe would heopardise stability, I think.