H-34 Choctaw/Weight and Balance - Revision history

Kelly: /* WEIGHT AND CG CALCULATION */

2021-07-10T02:59:28Z

‎WEIGHT AND CG CALCULATION

Kelly: /* WEIGHT AND CG CALCULATION */

2021-07-10T02:56:14Z

‎WEIGHT AND CG CALCULATION

Kelly: /* CG ARM DATA */

2021-07-10T02:55:14Z

‎CG ARM DATA

Kelly: /* CG ARM DATA */

2021-07-10T02:55:01Z

‎CG ARM DATA

Kelly: /* WEIGHT AND CG LIMITS */

2021-07-10T02:43:54Z

‎WEIGHT AND CG LIMITS

Kelly: /* EMPTY WEIGHT AND CG */

2021-07-10T02:41:06Z

‎EMPTY WEIGHT AND CG

Kelly: /* EMPTY WEIGHT AND CG */

2021-07-10T02:40:31Z

‎EMPTY WEIGHT AND CG

Kelly: /* EMPTY WEIGHT AND CG */

2021-07-10T02:40:04Z

‎EMPTY WEIGHT AND CG

Kelly: /* WEIGHT AND CG LIMITS */

2021-07-10T02:32:49Z

‎WEIGHT AND CG LIMITS

Kelly: Created page with " SECTION 5. WEIGHT AND BALANCE === General === The helicopter must be flown within the weight and CG (Center of Gravity) limits as specified in..."

2021-07-10T02:28:13Z

Created page with " <span class=sa-section>SECTION 5. WEIGHT AND BALANCE</span> === General === The helicopter must be flown within the weight and CG (Center of Gravity) limits as specified in..."

New page

<span class=sa-section>SECTION 5. WEIGHT AND BALANCE</span>

=== General ===

The helicopter must be flown within the weight and CG (Center of Gravity) limits as specified in this section. Failure to adhere to these limitations will result in unpredictable performance. CG is measured in inches aft of the datum plane. The datum plane is located at the forward most point at the tip of the pitot tubes.

=== WEIGHT AND CG LIMITS ===
The weight and extreme CG limits for this aircraft are:

{| class=wikitable
!Item
!Limit
|-
|Max Gross Weight: ||22,050 lb
|-
|Max Forward CG: ||235 inches
|-
|Max Aft CG: ||251 inches
|}

Not withstanding the maxmimum limits shown above, the helicopter should only be operated within the weight vs CG envelope shown in .

=== EMPTY WEIGHT AND CG ===
The empty weight and CG of this aircraft are:

{| class=wikitable
!Item
!Limit
|-
|Empty Weight: ||13,341lb
|-
|Empty Aircraft CG: ||240.8in
|-
|Empty Moment: ||3.21 M-lb-in
|}

=== CG ARM DATA ===
The following arm data can be used to calculate moment at each of these stations.

{| class=wikitable
!Item
!Limit
|-
|Pilot/Co-Pilot ||73 in (1.85 m)
|-
|Winch || 136 in (3.46 m)
|-
|RDF Operator || 145 in (3.68 m)
|-
|Hoist Operator || 150 in (3.82 m)
|-
|Utility Seat #1 || 243 in (6.17 m)
|-
|Fuel || 262 in (6.67 m)
|-
|Hook || 264 in (6.72 m)
|-
|Utility Seat #2 || 269 in (6.83 m)
|-
|Utility Seat #3 || 295 in (7.50 m)
|-
|Utility Seat #4 || 320 in (8.12 m)
|-
|Litter/Stokes Basket || 345 (8.78 m)
|-
|Ramp || 458 (11.63 m)
|}

=== WEIGHT AND CG CALCULATION ===
Total weight is calculated by adding total weight of empty aircraft, fuel, passengers and baggage. Fuel weight can be calculated assuming 7 pounds per gallon of (Jet-A) fuel. The CG is obtained by dividing total moment by total weight. Moment at each station is obtained by multiplying the arm of that station by the weight at that station. Total moment is obtained by adding moment for each station and the moment for the empty aircraft.

← Older revision		Revision as of 02:59, 10 July 2021
Line 67:		Line 67:

	=== WEIGHT AND CG CALCULATION ===		=== WEIGHT AND CG CALCULATION ===
−	Total weight is calculated by adding total weight of empty aircraft, fuel, passengers and baggage. Fuel weight can be calculated assuming 6 pounds per gallon of (100LL) fuel. The CG is obtained by dividing total moment by total weight. Moment at each station is obtained by multiplying the arm of that station by the weight at that station. Total moment is obtained by adding moment for each station and the moment for the empty aircraft.	+	Total weight is calculated by adding total weight of empty aircraft, fuel, passengers and baggage. Fuel weight can be calculated assuming 5.8 pounds per gallon of (100LL) fuel. The CG is obtained by dividing total moment by total weight. Moment at each station is obtained by multiplying the arm of that station by the weight at that station. Total moment is obtained by adding moment for each station and the moment for the empty aircraft.

← Older revision		Revision as of 02:56, 10 July 2021
Line 67:		Line 67:

	=== WEIGHT AND CG CALCULATION ===		=== WEIGHT AND CG CALCULATION ===
−	Total weight is calculated by adding total weight of empty aircraft, fuel, passengers and baggage. Fuel weight can be calculated assuming 7 pounds per gallon of (~~Jet-A~~) fuel. The CG is obtained by dividing total moment by total weight. Moment at each station is obtained by multiplying the arm of that station by the weight at that station. Total moment is obtained by adding moment for each station and the moment for the empty aircraft.	+	Total weight is calculated by adding total weight of empty aircraft, fuel, passengers and baggage. Fuel weight can be calculated assuming 6 pounds per gallon of (100LL) fuel. The CG is obtained by dividing total moment by total weight. Moment at each station is obtained by multiplying the arm of that station by the weight at that station. Total moment is obtained by adding moment for each station and the moment for the empty aircraft.

@@ Line 15: / Line 15: @@
 |Max Gross Weight:	||14,400 lb
 |-
-|Max Forward CG:	||235 inches
+|Max Forward CG:	||157 inches
 |-
-|Max Aft CG:	        ||251 inches
+|Max Aft CG:	        ||177 inches
 |}

@@ Line 31: / Line 31: @@
 |Empty Weight:	||7,645 lb
 |-
-|Empty Aircraft CG:	||167.7in
+|Empty Aircraft CG:	||167.7 in
 |-
-|Empty Moment:	||3.21 M-lb-in
+|Empty Moment:	||1.28 M-lb-in
 |}

@@ Line 29: / Line 29: @@
 !Limit
 |-
-|Empty Weight:	||13,341lb
+|Empty Weight:	||7,645 lb
 |-
 |Empty Aircraft CG:	||167.7in

@@ Line 64: / Line 64: @@
 |-
 |Utility Seat #6 || 270 in (6.88 m)
 |}
 === WEIGHT AND CG CALCULATION ===
 Total weight is calculated by adding total weight of empty aircraft, fuel, passengers and baggage. Fuel weight can be calculated assuming 7 pounds per gallon of (Jet-A) fuel. The CG is obtained by dividing total moment by total weight. Moment at each station is obtained by multiplying the arm of that station by the weight at that station. Total moment is obtained by adding moment for each station and the moment for the empty aircraft.

@@ Line 43: / Line 43: @@
 !Limit
 |-
-|Pilot/Co-Pilot	||73 in (1.85 m)
+|Pilot/Co-Pilot	||119 in (3.02 m)
 |-
-|Winch || 136 in (3.46 m)
+|Hoist Operator || 147in (3.74 m)
 |-
-|RDF Operator || 145 in (3.68 m)
+|Hook || 168 in (4.26 m)
 |-
-|Hoist Operator || 150 in (3.82 m)
+|Fuel || 168 in (4.26 m)
 |-
-|Utility Seat #1 || 243 in (6.17 m)
+|Winch || 174 in (4.42 m)
 |-
-|Fuel || 262 in (6.67 m)
+|Utility Seat #1 || 165 in (4.19 m)
 |-
-|Hook || 264 in (6.72 m)
+|Utility Seat #2 || 182 in (4.63 m)
 |-
-|Utility Seat #2 || 269 in (6.83 m)
+|Utility Seat #3 || 204 in (5.19 m)
 |-
-|Utility Seat #3 || 295 in (7.50 m)
+|Utility Seat #4 || 234 in (5.95 m)
 |-
-|Utility Seat #4 || 320 in (8.12 m)
+|Utility Seat #5 || 250 in (6.36 m)
 |-
 |Litter/Stokes Basket || 345 (8.78 m)
 |}
 === WEIGHT AND CG CALCULATION ===
 Total weight is calculated by adding total weight of empty aircraft, fuel, passengers and baggage. Fuel weight can be calculated assuming 7 pounds per gallon of (Jet-A) fuel. The CG is obtained by dividing total moment by total weight. Moment at each station is obtained by multiplying the arm of that station by the weight at that station. Total moment is obtained by adding moment for each station and the moment for the empty aircraft.