[사진자료] F-4의 사출시트인 Martin-Baker사의 Mk. H-7 Ejection Seat 디테일 업 사진들..

[mirageknight [왕성국]]

안녕하세요~~ 미라지나이트 입니다.

어제까지 모든 팬톰 및 치피호 발송을 마치고 (일부 묶음배송요청자 제외) 오늘은 차분하게 팬톰 리뷰 작성중입니다.

이중 사출좌석에 대한 사진이 부족해 급히 올립니다.

[사출좌석의 명가!! Martin-Baker사의 Mk. H-7 Ejection Seat 입니다. F-4씨리즈 전기종에 사용된 사출좌석 입니다.]

[탈출 핸들의 모습 에어리어 88등지에서 봤듯.. 노랑과 검정으로 된 페이스 핸들을 힘차게 당기면 아래의 모터가 점화되면서 사출됩니다.]

[프레임의 모습.. 전체 무광검정 입니다. 당연히 방탄기능이 있는 철재 입니다.]

[시트를 사출시키는 모터의 모습 입니다. 앞서 소개한 페이스 핸들을 당기면 이 모터에 점화되면서 조종사와 사출시트를 강력하게 사출합니다.]

[이것은 팬톰 실기체 메뉴얼에서 따 온겁니다. 외국에서는 이런것도 비싸게 팔리더군요..]

[헉 이것슨!! 마네킹을 태운 모습..사출좌석은 사출되면 재사용이 가능합니다. 다만 화약채우고 셋팅하는 비용이 수억은 든다고..전에 F-15K를 조종하던 모 중령이 이게 작동하나 싶어 당겼다가 바로 사출되고.. 캐노피 갈고 조종석 다시 세팅하고.. 수십억 때졌다는 웃지 못한 촌극이 실제로 있었습니다. 뉴스에도 나왔죠..] 

The Martin-Baker Aircraft Co. Ltd (MBA) Mk. H-7 seat is one of the most manufactured ejection seats in the world with some 11000 manufactured or modified to the Mk. H-7 standard from the earlier Mk. H-5 seat. The H-7 is one of the most interesting seats in the MBA family due not only to its large number, but also due to its length of service, and the evolution which it displays.

Due to the McDonnell-Douglas Phantom II entering service in the early 1960s, the seats originally fit to the production aircraft were Martin-Baker Mk. H-5 seats. These seats were rated at about 115kt on the runway. Their configuration varied significantly from the Mk. H-7 in that the main parachute container was a soft pack, and was held in a hooded backrest similarly to the Mk. F-5 and Mk. F-7 seat used in the F-8 Crusader. The seat bucket was similar to the later Mk. H-7 versions. Over the years, the parachute container was changed to the hard fiberglass container, and the hood was deleted. The rocket pack was added to the seat, bringing it up to the Mk. 7 family specifications which lowered the speed required on the runway to zero knots. The original Mk. 51 underseat rocket utilized a mechanical initiator with a lanyard attached directly to the rocket. Later on the rocket was changed to the Mk. 92 gas initiated rocket, which enabled the lanyard to be moved to the underseat Rocket Initiator as seen below. These changes, and some other smaller ones, made the Mk. H-7 a very good example of seat evolution.

One unique feature of the Mk. H-7 family (which includes four main variants; USAF Pilot, USAF WSO, USN Pilot, USN RIO) is that the seat buckets are designed to be removed in the aircraft for maintanance. Then, the main beam assembly is unlatched from the catapult and raised a short distance to a point where it can be tilted forward via slots in the catapult rails and removed without removing the canopy of the aircraft.

Description

Bolted to the upper section of the main beam assembly is the headrest which doubles as the housing for the drogue chute, and the mounting location for the upper ejection handles. This seat utilizes a large fiberglass box (dark green) which is on the order of 19 inches wide, 14.5 inches high and about 6-7 inches max thickness. It has a bulging nylon cover at the top which protects the packed chute. It has a concave front with a upside down "U" shaped cutaway in the center. This slot rises some 8.5 inches from the base and the container is hung from the slot on a matching saddle shaped protrusion on the seat back. A pair of springs are placed between the parachute box and the seat back during rigging of the seat, and are retained with the pack by a pair of pack retention bands which are attached from the saddle area to the point on the headrest where the face curtain is also attached. The pack restraining bands and the face curtain are retained in place by a pair of pins akin to cotter pins. These pins are attached to the main parachute withdrawal line and pulled by the lines when the scissor shackle on the top of the seat is released by the action of the Timer Release Mechanism (TRM) The

The Drogue chute container is also a fiberglass material with a heavy 4-flap nylon cover. Only the edge of the fiberglass is visible as the container is form fit to the receptical slot in the top of the main beam assembly. (See OV-1 MB MK. J5D Main Beam for an example of this construction.)

Flanking the top of the main beam assembly are the TRM and Drogue Gun. The TRM (Timer-Release-Mechanism) is a unit that is tripped by a trip-rod connected to the cockpit bulkhead as the seat rises up the rails. When activated, a timer mechanism counts down for a few short seconds allowing the drogue chute to slow and stabilize the seat, prior to seat seperation. The timer is inhibited by a barostat assembly (the cylinder protruding from the TRM) if the seat is above 15000 feet. When the TRM completes its timer stroke, a rod is retracted from the top, and extends out the bottom to depress a lever. This lever moves a bellcrank mechanism to rotate a pair of metal rods that extend vertically into the seat bucket, and also to release the inertia reel latches to release the seat occupant. The rods release the leg restraints and the survival kit latches as well as the seat belt release on the USAF seat.

The Drogue Gun Unit (DGU) fires approxamately 3/4 of a second after the seat begins moving up the rails. It fires a metal slug with enough energy to drag the smaller of the duplex drogue parachutes out of its pack and allow it to deploy. The picture to the right shows the silver end of the drogue slug without the drogue withdrawal line attached. The barrel of the DGU is the thinner red labled cylinder at the top. The thicker area is the chamber area of the barrel where the charge is installed. The green anodized unit attached to the reciever/timer portion of the DGU is the underseat Rocket Initiator. This unit uses a lanyard attached to the yellow trip-rod which pulls the sear from the DGU. This trip-rod is attached to the cockpit via a crossbeam unit bolted to the catapult's outer tube. When the seat begins to move up the rails the trip-rod withdraws the sear from the DGU and begins to unspool the lanyard from the rear section of the Rocket Initiator. When the catapult nears the end of the stroke, and the lanyard reaches its end, it pulls the sear from the Rocket Initiator via a lever in the top, curved section of the unit. This fires a cartridge in the Rocket Initiator and sends hot gas via the flexable hose attached to the base of the unit down to the underseat rocket firing mechanism.

The location of the oxygen bottle is a key difference with the Mk. H-7 used in the US Navy and Marine Corp aircraft. The USN and USMC include the oxygen bottle in the survival kit. On this USAF seat, the bottle is visible behind the cushion in the front view. In that photo you can also see the emergency oxygen line connected to a CRU-60/P unit lying on the seat cushion. The CRU-60/P unit connects the aircraft oxygen, the seat mounted emergency oxygen, and the crewman's oxygen mask. On the left of the seat bucket in this photo the green ball (called an 'apple') manual actuator for the emergency oxygen supply is visible along with its mechanical linkage. Normally on the USAF version of the seat there is a separate lap belt, but this seat does not have it fitted yet.

The seat pictured here has been restored by Matt Wietlispach and will be replacing the F-100D seat in his amazing simulator. Thanks Matt for the pictures

출처는 http://www.ejectionsite.com/f4seat.htm 입니다. 시간있으면 번역 해보겠는데.. 시간관계상 번역은..나중에

[Luke Kim [김명기]]

도색 및 디테일업에 많은 참조가 될것입니다.
이넘(H-5 & H-7)이 11000개 이상 제작 및 수정되어졌다고 하니 뱅기도 그만큼 비슷하게 만들어졌다는 것이잖아요...
복좌기포함해서 대략 7000기 이상에 적용된 베스트셀러네요...

사실 페이스 커튼 달린 시트가 모형하면서 제일 간지가 나는것 같습니다...