Part 83, page 312

Transcript

The scan is the source; the transcript is machine-generated from it.

TWENTY NIGHT FIRES— Shown are the Det. 32 personnel who participated in the 20 night fire suppression exercises upon which this report is based. In front are T/Sgt. Dan W. Long, fire- man; and Captain Seebo, Detachment Commander. Standing are Lt. James L. Butera and Lt. William F. Glover, Jr. The night fire ex- ercises were photographed by A1/C Leland B. Bernard, 3560th Air Base Group, Webb AFB.

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THE AUTHOR

Capt. Thomas C. Seebo is Commander of Detachment 32, Central Air Rescue Cen- ter, Webb Air Force Base, Texas. In helicopter assignments since 1954, he has totaled 3000 flying hours of which 2500 are in helicopter and 300 are in the H-43B. A base rescue assignment at Webb AFB followed three years with the 71st Air Rescue Squadron in Alaska.

During the spring of 1961, he coordi- nated and conducted exercises using the H-43B in support of ground vehicles and termed the operation "SKYIR."

Previous military service, 1944-47, was as aerial gunnery instructor and C-47 flight engineer. An AFROTC commis- sion was obtained in 1951 from Okla- homa State University while majoring in Architectural Engineering. Current military service and pilot training com- menced in 1953.

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Big Day For H-43B Crew

To the crew of an H-43B from Stead AFB, Nev.; fell the honor of ferrying Vice President Lyndon B. Johnson and Gen. Curtis E. LeMay, USAF Chief of Staff, to the recent graduation exercises at the Air Force Academy in Colorado Springs, Colo. Also aboard the H-43B on the aerial trip from the airfield to the parade ground were Maj. Gen. W. S. Stone, Academy Superintendent; and Col. H. Burris of the Vice President's staff.

Lined up, waiting for the HUSKIE to touch down was an honor guard of cadets who formed a corridor for the Vice President's walk to the speaker's stand where he addressed the 297-man, gold-seated graduating class. More than 8,000 cadets, families and spectators jammed the academy parade ground to view the impressive cere- mony.

For the H-43B crew this climaxed a busy week at the Academy for they were on standby with the fire suppression kit at the airfield. Seventy aircraft participated in the air show which preceded the graduation exercises.

Capt. B. J. Wingfield was H-43B pilot, Major R. M. Atchley, co-pilot; S/Sgt. J. R. Chesson, crew chief; A1/C D. B. Dunn and R. L. Webb, mechanics; T/Sgt. R. C. Finlayson and S/Sgt. J. S. Hoban, firemen. (USAFA photo)

DISTINGUISHED COMPANY—Generals Stone and LeMay chat with Vice President Johnson beside HUSKIE which flew them to USAF Academy Graduation exercises.

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The following equipment is required to adjust and test the speed switch.

(a) Variable speed drive with provisions for mounting the speed switch. A standard tachometer generator tester fulfills this requirement. (b) A multi-meter for checking continuity of switch contacts. (c) If available, Pierce Governor cut- away cover, P/N SK-11464, which makes the internal stroke adjustment screw ac- cessible during testing.

Adjustment and Test Procedures for Speed Switch (Refer to figure 2)

1. Applicable to switches that open prema- turely and special cut-away cover, SK-11464, is not available.

(a) Mount speed switch on tester. (b) Connect multi-meter to pins A and B of speed switch receptacle (6). (c) Loosen set screw (2). (d) Operate tester at 1160 + 20 RPM. (e) Adjust RPM adjusting screw (1) for switch actuation. (f) Apply "Loctite," grade B(7-2), to set screw (2) and tighten. (g) Re-check to assure that switch ac- tuates at 1160 ± 20 RPM and that the switch re-sets.

2. Applicable to switches that fail to open at any RPM and special cut-away cover, SK-11464, is not available.

(a) Mount speed switch on tester. (b) Connect multi-meter to pins A and B of speed switch receptacle (6). (c) Operate tester at 1300 RPM, meter should indicate switch actuation. If switch actuates, follow procedure 1. If switch fails to actuate, continue with step (d). (d) Turn tester power "OFF." (e) Remove speed switch cover assembly and inspect for loose or damaged parts. (f) Loosen lock nut (4) and turn stroke adjusting screw (5) one turn clockwise. (g) Tighten lock nut (4) and replace cover assembly.

(h) Operate tester at 1300 RPM, meter should indicate switch actuation. If switch actuates, continue with step (i). If switch still fails to actuate repeat steps d, e, f, g and h until the switch actuates at 1300 RPM. (i) Follow procedure 1 to continue with adjustment of switch for actuation at 1160 ± 20 RPM.

3. Applicable to both types of malfunctions, with special cut-away cover, SK-11464.

(a) Remove speed switch cover assembly and inspect for loose or damaged parts. (b) Install cut-away cover on speed switch. (c) Mount speed switch on tester. (d) Connect multi-meter to pins A and B of speed switch receptacle (6). (e) Loosen set screw (2). (f) Operate tester at 1160 ± 20 RPM. (g) Turn RPM adjusting screw (1) clock- wise until governor weights are closed and then turn RPM adjusting screw counter clockwise until the governor weights are in the maximum open position. Note: Governor weights are visible through the cut-away cover. (h) Operate tester at 1300 RPM, loosen lock nut (4) turn screw (5) clockwise until switch is actuated. (i) Turn screw (5) an additional 1/2 turn for overtravel and secure with lock nut (4). (j) Reduce speed and check to make sure the switch resets. (k) Adjust RPM adjusting screw (1) to actuate switch at 1160 ± 20 RPM. (l) Apply "Loctite," grade B(7-2) to set screw (2) and tighten. (m) Turn tester power "OFF." (n) Replace the cut-away cover with ori- ginal cover and recheck switch actuation RPM.

Changes, based on operating experience, are now being made in the switches to further increase their reliability. It is hoped the preceding information will prove of value to maintenance personnel. Questions re- garding the multi-speed switch, or any other component, are always welcome. K

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6 KAMAN ROTOR TIPS AUGUST, 1962 15

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DB Cooper-36785 15